Here’s an interesting fact: Volstagg is one of the few recognizable Marvel characters who has never had an origin or extensive back-story developed. The Asgardians derive from myth, of course, but Marvel has developed histories for most of them. But not so much this fan favorite.
In the above picture, he posing with his family (from Marvel Fanfare #45). He first appeared in Journey Into Mystery #119 by Jack Kirby, which hit the stands on this day in 1965.