| Male Emperor of Rome Flavius Valerius Constantius |
| Birth | 250 | |
| Death | 25 Jul 306 | |
| Burial | ||
| Marriage | ||
| Father | ||
| Mother | ||
| Female Helena, of Colchester |
| Birth | 248 | |
| Death | 328 | |
| Burial | ||
| Father | King of Colchester Coilus Coel, II | F2872 Group Sheet | |
| Mother | Strada Ferch Cadfan, of Cumbria | F2872 Group Sheet | |
| Male + Emperor of Rome Constantine, I |
| Birth | 27 Feb 288 | Naissus, Serbia |
| Death | 22 May 337 | Macromedia, Bithynia, Turkey |
| Burial |