Board Thread:Lore Discussion/@comment-5701011-20140725171950

Ive been wondering this for years ,How was it possible that (in Oblivion) The Gray Prince's father was a vampire? I was under the impression that vampires being undead were sterile. Is Lord Lovidicus really his father or are vampires actually able to breed in TES Lore? or was this just a mistake by TES writters? 