Okay, remember when I said when Damian moved in with his Father his name was changed to Damian Tomas Wayne? Well, I know why his middle name was changed from Anthony to Tomas. So, we know Bruce's parents names, Tomas and Martha Wayne. Well, we all know his parents died. (if not, learn more about the history of batman) Anyways, his middle name was changed in honor of Damian's Grandfather and Bruce's Father, Tomas Wayne. Of course, he couldn't change his first name but it's the least he can do.