(Information retrieved from http://www.last.fm/music/Patrick+Stump/+wiki )
Stump changed his middle name from Martin to Vaughn because “that’s [his] family name” or his mother’s maiden name. The change was to honor his mother’s side of his family who have influenced and supported him just as much if not more than his father’s side. He would also like you to know that “it’s just pronounced ‘Von’”.
Posted: Sun Dec 21, 2008 7:48 pm
Oh no! It is true... How sad... Oh, well, that's good that he's honoring his mother's side of the family, too.