*Gratian? verch Macsen Wledig
born before 0388

father:
*Macsen Wledig (Magnus Maximus)
born about 0320? Spain
died 0388 Aquileia, Gaul

mother:
*Ceindrech verch Rheiden
born about 0340?
(end of information)

or
*Elen "Luyddog" ferch Eudaf
born about 0330 North Britain

siblings:
*Annun ap Macsen Wledig (Magnus Maximus) born about 0370?
*Severa verch Macsen Wledig

spouse:
*Tudwal ap Gwrfawr
born about 0420

children:
*Prawst verch Tudwal
born about 0450?

biographical and/or anecdotal:

notes or source:
ancestry.com
There appears to be a mismatch on the dates.