Constantius I Chlorus Emperor ROMAN EMPIRE
Constantius I Chlorus Emperor was born on March 31st, 0250.  He died at the age of 56 in 0306 in Eborcum (now York), Britain.

 Helena (St.) "Of The Cross" Of Helena (St.) Of
Helena (St.) "Of The Cross" Of was born about 0290 in Colchester, Britain.  She died about 0328 in Necomedia.

 Constantine "The Great" Emperor ROMAN EMPIRE
Constantine "The Great" Emperor was born in Niö, Serbia.  He died on May 22nd, 0337 in Nicomedia.