There was this GX guy, I believe he was Xerarch before Selenia, he died on the battlefield which was one of the events that caused creation of a new religion.
Later Selenia dueled Gustaf Essenhorn (killer of said Hero), but ye ol' Gustaf survived.
Then Selenia died and came back, which caused almost everything that happened afterwards on EC happen.
On other continents there was Mariah Greyson - founder of evil cult - got flayed alive after the funniest manhunt I've experienced (cheers to those participating). Which btw happened by the hand of a guy who's now hated by half the continent.
Oh and there was heroic Gilth Gildre death, can't recall anything in particular about it though.
All in all those are only the ones that happened during my brief adventure with BM. I'm sure older fellas have more to tell. I believe not enough fuss is made about heroic deaths.