Guild Wars 2

Is it possible that he is a child of Gwen in GW1?
According to the gravestone he was born one year after the foefire, 1091 and died 15 years later.
Gwen has married Keiran in the 1080ies, if I remember it right, so she whould have the partner to become a mother.
Because of the writing on the stone “I’ll make you proud, brother”, it also seemed to be, that the person, that commissioned the stone was a silbling, and since it must be able to do that, the silbling was probably already old enough to pay the stonemason.
So was this silbling of Cordelius an ancestor of Dylan and Logan Thackeray?
Do I interprete too much in this?

Well, since Keiran had no surviving family, Cordelius would have to be his and Gwen’s. (They married 1079, so they couldn’t have had a kid old enough to have a kid themselves.) The anonymous sibling could be Logan’s ancestor, but that’s a bit more of a stretch- if there were more than two kids, it’s just as likely that they aren’t.

I always thought it was the grave of Logans brother from Edge of Destiny. Though I’ve not read the book in a long time and could and most probably be very wrong, or it could be his grave but his name was changed in the book, but not in game? Maybe we’ve just found an error in the game.

The dates are way too old. Dylan died in 1320, Cordelius, 1106.