*Constantine the Great (Flavius Valerius Aurelius Constantinus) Emperor
born 17 February 0265 Naissus in Moesia
died in May 0336/37
buried in the church of the Holy Apostles in Constantinople

father:
*Constantius I (Flavius Valerius Constantius Chlorus) "the Pale" Emperor
born in 0242
died Eboracum (York, England) 25 July 0306

mother:
*Helen (St. Helena of the Cross) of Britain ("Britannica")
born in 0265 Bythnia, Britain
died 0336/37

siblings:
unknown

spouse (1st):
*Minervina wife of Constantine the Great
(end of information)

children (from 1st wife):
*Flavius Julius Crispus Caesar
died 0325

spouse (2nd):
*Fausta daughter of Emperor Maximian
married 31 March 0307

children (from 2nd mariage):
*Constantius II
born 7 August 0317 Sirmium, Savia (now Sremska Mitrovica, Yugoslavia)
died 3 November 0361 Mopsucrenae, Honorias (Turkey)
Constantine II
Constans I
Helen

biographical and/or anecdotal:
Constantine received only a meager education. He took up soldiering early, and proved his valor in the wars against Egypt and Persia. He was of British birth and education, and is known as the first Christian Emperor. He fought with his father in the Boulogne campaign and shared in a British campaign. The Gallic army, deeply loyal to the humane Constantius, came to love his handsome, brave, and energetic son; and when the father died at York in 306, the troops proclaimed Constantine not merely as "Caesar" but as Augustus - emperor. He accepted the lesser title, excusing himself on the grounds that his life would be unsafe without an army at his back. Consequently Constantine fought successfully against the invading Franks. Later, with a British army he set out to put down the persecution of Christians forever. The greatest of all Roman Emperors, he annexed Britain to the Roman Empire and founded Constantinople. In the year 321 he decreed that the Christian Sunday be truly observed as a day of rest. In 325 he assembled the Council of Nicea in Bithynia, Asia Minor, which he attended in person. This Council formulated the Nicene Creed. The following edict of Constantine sets forth the standards of his life: "We call God to witness, the Savior of all men, that in assuming the government we are influenced solely by these two considerations - the uniting of the empire in one faith, and the restoration of peace to a world rent in pieces by the insanity of religious persecution."

notes or source:
ancestry.com & HBJ