Instruct: Given a question, retrieve documents that can help answer the question.
Query: When was Constantine I born?
Constantine the Great (Latin: Flavius Valerius Aurelius Constantinus Augustus; Greek: Κωνσταντῖνος ὁ Μέγας; 27 February c. 272 AD[1] – 22 May 337 AD), also known as Constantine I, was a Roman Emperor who ruled between 306 and 337 AD. Born on the territory now known as Niš (Serbian Cyrillic: Ниш, located in Serbia), he was the son of Flavius Valerius Constantius, a Roman Army officer. His mother was Empress Helena. His father became Caesar, the deputy emperor in the west, in 293AD. Constantine was sent east, where he rose through the ranks to become a military tribune under Emperors Diocletian and Galerius. In 305, Constantius was raised to the rank of Augustus, senior western emperor, and Constantine was recalled west to campaign under his father in Britannia (Britain). Constantine was acclaimed as emperor by the army at Eboracum (modern-day York) after his father's death in 306 AD. He emerged victorious in a series of civil wars against Emperors Maxentius and Licinius to become sole ruler of both west and east by 324AD.
The eldest son of Constantine the Great and Fausta, Constantine II was born in Arles in February 316 and raised as a Christian. On 1 March 317, he was made Caesar. In 323, at the age of seven, he took part in his father's campaign against the Sarmatians. At age ten, he became commander of Gaul, following the death of his half-brother Crispus. An inscription dating to 330 records the title of "Alamannicus", so it is probable that his generals won a victory over the Alamanni. His military career continued when Constantine I made him field commander during the 332 campaign against the Goths.
Theodora (in Greek: Θεοδώρα; born c. 946) was the second wife and the empress consort of John I Tzimiskes. She was a daughter of Constantine VII and Helena Lekapene. Her maternal grandparents were Romanos I Lekapenos and Theodora. 
The Donation of Constantine purported to memorialize the transfer to Sylvester I and his successors of dominion over the entire Western Roman Empire for the consideration of Sylvester I's instruction of Constantine in Christianity, baptism of Constantine, and curing Constantine of leprosy. Constantine allegedly kept for himself only the Eastern Roman Empire. The forgery was probably constructed during the Frankish Papacy, when Pope Stephen II became the first pope to cross the Alps to crown Pepin the Short, who issued the Donation of Pepin (a non-forgery), granting the pope control of the lands of the Lombards, which coalesced into the first fragments of the Papal States.
Constantine was arrested on a drunken driving charge in 2004, his second arrest for driving under the influence of alcohol. In 2007 someone using a computer owned by the Florida Legislature removed the entry about Constantine being arrested for DUI from his Wikipedia page, and when asked about the incident Constantine stated, "I don't even know what Wikipedia is, I'm surprised I can even pronounce it."
The decision to construct the building which currently is used as the Presidential Mansion was made in 1868. That year, King George I's son, Constantine, the heir to the throne, was born and the Greek state decided to present him with a private dwelling, when he came of age. Twenty-one years later when Constantine married princess Sophia of Prussia, the state assigned the planning of "The Crown Prince's Palace", as the building became known, to Ernst Ziller. Building began in 1891 and was completed six years later in 1897.
Early in his reign, Constantine's mother entered into negotiations with the Byzantine Empire and, in exchange for recognizing nominal Byzantine suzerainty, Constantine was invested with the title of "sebastokratōr". Constantine continued his father's war against Nikephoros I Komnenos Doukas of Epirus and his Angevin allies. The campaign of 1295 resulted in Thessalian occupation of the fortresses that Nikephoros had designated as the dowry of his daughter Thamar Angelina Komnene when she married Philip I of Taranto, son of King Charles II of Naples and Maria of Hungary. Most of these conquests were lost to the Angevins in 1296, when a truce was signed. Further fighting followed in 1301, and Angelokastron in Aetolia-Acarnania had to be returned to Philip of Taranto. Virtually nothing else is known about the reign of Constantine, who died in 1303.
Of distant Greek origins, the Cantacuzinos had reached prominence in both Wallachia and Moldavia, which were governed as tributary states of the Ottoman Empire. According to diverging accounts, Constantin was born in 1791, 1793, or "about 1798". His father was the "Clucer" Gheorghe (Iordache) Cantacuzino (1747–1803), grandson of Constantin I Cantacuzino; through his two paternal great-grandparents, Constantin descended from Michael Kantakouzenos Şeytanoğlu and Prince Radu Șerban. Constantin was born from Gheorghe's marriage to Maricuța, daughter of "Ban" Ștefan Pârșcoveanu. The couple had another son, Grigore (1800–1849), who also served as Wallachia's "Vornic".
In 1913 Sophie's grandfather, King George I, was assassinated and in 1917 most of the Greek royal family went into exile when her uncle, King Constantine I, was deposed in favour of his younger son, King Alexander I. The family returned to Greece upon the brief restoration of Constantine to the throne when Alexander died in 1920, but left again when he abdicated in 1922, inaugurating the even briefer reign of Constantine's eldest son, George II. Banished with King George in 1924, the Greek monarchy was reinstated in 1935, by which time Sophie had married and was raising a family in Germany.
Born on 2 August 1868 in Athens, Constantine was the eldest son of King George I and Queen Olga of Greece. His birth was met with an immense wave of enthusiasm: the new heir apparent to the throne was the first Greek-born member of the family. As the ceremonial cannon on Lycabettus Hill fired the royal salute, huge crowds gathered outside the Palace shouting what they thought should rightfully be the newborn prince's name: "Constantine". This was not only the name of his maternal grandfather, Grand Duke Konstantin Romanov of Russia, but also the name of the "King who would reconquer Constantinople", the future "Constantine "XII", legitimate successor to the Emperor Constantine XI Palaiologos", according to popular legend. He was inevitably christened "Constantine" (, "Kōnstantīnos") on 12 August, and his official style was the "Diádochos" (Διάδοχος, Crown Prince, literally: "Successor"). An additional nickname adopted mainly by the royalists for Constantine was "the son of the eagle" (ο γιός του αητού). The most prominent university professors of the time were handpicked to tutor the young Crown Prince: Ioannis Pantazidis taught him Greek literature; Vasileios Lakonas mathematics and physics; and Constantine Paparrigopoulos history, infusing the young prince with the principles of the "Megali Idea". On 30 October 1882 he enrolled in the Hellenic Military Academy. After graduation he was sent to Berlin for further military education, and served in the German Imperial Guard. Constantine also studied political science and business in Heidelberg and Leipzig. In 1890 he became a Major General, and assumed command of the 3rd Army Headquarters (Γʹ Αρχηγείον Στρατού) in Athens.
Constantine III of Britain (6th century) was one of the legendary kings of Britain, having a slender historical basis; Constantine I of Scotland (5th century) was a mythical figure from the king-list of George Buchanan. Constantine I of the Picts (9th century) was a real historical figure. The main historical reference of the "British Constantine", however, from the 12th century to the 18th century, was the Roman Emperor Constantine I. This was the period in which the legend that Constantine was a British native was taken seriously, and had significance for politics. It was bound up with completely unattested stories about the British origin of his mother, Helena of Constantinople, important in Christian tradition. While Constantine was at York in 306 with his father Constantius Chlorus, and was declared Augustus on his father's death in that year, there is no historical evidence to connect Helena with Britain.
Ketevan was born to Prince Ashotan of Mukhrani (Bagrationi) and married Prince David of Kakheti, the future David I, king of Kakheti from 1601 to 1602. After David's death, Ketevan engaged in religious building and charity. However, when David's brother Constantine I killed his reigning father, Alexander II, and usurped the crown with the Safavid Iranian support in 1605, Ketevan rallied the Kakhetian nobles against the patricide and routed Constantine's loyal force. The usurper died in battle. According to the Safavid official and chronicler, Fażli Ḵuzāni, Ketevan showed characteristic mercy to Constantine's surviving supporters and his Qizilbash officers. She ordered that the wounded enemy soldiers be treated accordingly and accepted in service if they desired. The Muslim merchants, who suffered in the war, were compensated and set free. Ketevan had Constantine's body laid in rest and sent to Ardebil.
The Donation of Constantine, an 8th-century forgery used to enhance the prestige and authority of popes, places the pope more centrally in the narrative of Constantinian Christianity. The legend of the Donation claims that Constantine offered his crown to Sylvester I (314-335), and even that Sylvester baptized Constantine. In reality, Constantine was baptized (nearing his death in May 337) by Eusebius of Nicomedia, who, unlike the pope, was an Arian bishop. Sylvester was succeeded by Mark (336) and Julius I (337-352) during the life of Constantine.
Constantine was born sometime after 1358 into the family of Bagrat I, then duke (and ex-king) of Imereti, and his wife, a Jaqeli noblewoman of Samtskhe. He was a younger brother of two successive kings of Imereti, Alexander I and George I, who had broken away from the Kingdom of Georgia during Timur's invasions of that country. After the death of George I in the battle with Vameq I Dadiani, Duke of Mingrelia, in 1392, Constantine and his nephew, Demetrius, son of Alexander, fled to the Caucasian mountains, while Imereti was reintegrated by George VII of Georgia.
Marianus I (died after 18 March 1082) was the Judge of Logudoro from 1073, when he is first mentioned after his father or grandfather, Barisone I, until about 1082, when he is last mentioned. His reign is obscure and the next judge mentioned is his son Constantine I in 1112, but to ascribe to Marianus a 39-year reign seems unnecessary and the presence of unknown other judges between Marianus and Constantine is likely.
Constantine was married three times, to Helene Musil (1942-1976, divorced), with whom he had three children, Dorothea Gibson (1977, divorced), and the film producer Maya Faber-Jansen (1979–1993, Constantine's death), with whom he had one child. His daughter Tanya Constantine, born in 1943, is a photographer. His daughter Barbara Constantine, born in 1955, is a writer. His son Lemmy Constantine, born in 1957, is also a singer and actor. His daughter Mia Constantine, born in 1981, is a theater director.
Constantine I was the second son of Teimuraz I, by his wife Ana, daughter of Nugzar, Duke of Aragvi of the House of Sidamoni. He was born between 1618 and 1622. In 1658, Constantine succeeded as Prince of Mukhrani his elder brother Vakhtang, who became King of Kartli on the death of his adopted father, Rostom, the last in the main male line of the Bagrationi of Kartli. On this occasion, Vakhtang, as a vassal of Safavid Persia, converted to Islam, but Constantine remained Christian. He is buried at the Cathedral of Mtskheta. 
Constantine Doukas or Ducas (, "Kōnstantinos Doukas"), (late 1074 – 1095) was Byzantine junior emperor from 1074–1078, and again from 1081–1087. He was born to Emperor Michael VII and Empress Maria of Alania in late 1074, and elevated to junior emperor in the same year. He was junior emperor until 1078, when Michael VII was replaced by Nikephoros III Botaneiates. Because Constantine was not made junior emperor under Nikephoros III, his betrothal to Olympias, the daughter of Robert Guiscard, was broken, which Robert Guiscard used as a pretext to invade the Byzantine Empire. John Doukas forced Nikephoros to abdicate to Alexios I Komnenos in 1081, and shortly after Alexios elevated Constantine to junior emperor under himself. Constantine remained junior emperor until 1087, when Alexios had a son, John II Komnenos. Constantine died in 1095.
As Olympias’ father had acquired great influence over the Roman emperor Constantine I who seem to be attached to the emperor. Shortly before the death of Constantine I, the emperor along with Ablabius had arranged for Olympias to be engaged to Constans one of the sons of the emperor. When Constantine I died in May 337, he was succeeded by his sons and among them was Constans. In 338, due to her father's fall out with Constans’ brother Constantius II and his execution, Constans never married Olympias. For as long as Constans lived, Constans took care of Olympias and they had lived together as if Olympias was the wife of Constans. In 350 when Constans died, Olympias still lived in Constantinople with the remaining relatives of Constans.
Maxentius later appointed Anullinus Urban Prefect for a second time, apparently as an attempt to garner good fortune prior to his upcoming clash against his rival, Constantine I. Anullinus held the post from 27 October to 29 November 312. He was appointed the day before Maxentius was defeated by Constantine I at the Battle of the Milvian Bridge, and greeted Constantine when he entered Rome on his second day as Prefect. Constantine kept him on in the office throughout November.
He was born in Constantinople, during the Turkish blockade of that city; his godmother was the nun Thomais. In 1418 he was appointed attendant to Emperor Manuel. During his service to the Emperor Manuel, Sphrantzes did many favors for Constantine, developing a strong rapport with the future Emperor for, as he writes, "my uncle had been his tutor and my cousins and I were his companions, friends, and attendants." After the death of Manuel, he became the servant of Constantine and left with him 26 December 1427 when Constantine was appointed Despot of the Morea. 
It became a favorite city of Emperor Constantine I, who built baths there, substantial remains of which are still standing. His son, Constantine II, was born in Arles. Usurper Constantine III declared himself emperor in the West (407–411) and made Arles his capital in 408.
After the fall of monarchy in Russia, Constantine lost his last supporter inside the Entente, who opposed to his removal from the throne. In the face of Venizelist and Anglo-French pressure, King Constantine finally left the country for Switzerland on 11 June 1917; his second-born son Alexander became king in his place. The Allied Powers were opposed to Constantine's first born son George becoming king, as he had served in the German army before the war and like his father was thought to be a Germanophile.
Early kings of "Clann Cináeda meic Ailpín" are described as kings of the Picts, and the third king, Kenneth's son Constantine I (Causantín mac Cináeda), appears to have been regarded as the last of the 70 Pictish kings soon after his death. The descendants of Kenneth were ousted in 878, when Constantine I's brother, Áed mac Cináeda, was killed by Giric mac Dúngail, but they returned in 889, when Constantine I's son Donald II (Domnall mac Causantín) ascended the throne upon the death or deposition of Giric. Donald II and his successors are described as kings of Alba.
George was born at the royal villa at Tatoi, near Athens, the eldest son of Prince Constantine of Greece and his wife, Princess Sophia of Prussia. George pursued a military career, training with the Prussian Guard at the age of 18, then serving in the Balkan Wars as a member of the 1st Greek Infantry. When his grandfather was assassinated in 1913, his father became King Constantine I and George became the crown prince.