not quite the first, but pretty close...
my dad did the old "revolver in a shoebox in the closet" thing, but they weren't really talked about in my house. i remember very vividly the day i ran across it while looking through his dirty magazines. fortunately, i was no dummy and had no intention of "playing with it". i would say that incident made me fairly anti for much of my adolescence. it wasn't until i was much older that i came around to the idea of gun ownership. it's funny to me that parents think they can hide anything from their kids, and i have vowed not to make that same false assumption with my own kids.
overall, parents were neither pro nor anti. my younger brother had one for awhile but gave it to his father-in-law who he felt needed it more than him. i am the only member of my family with a serious interest in guns. i wish i could get more of them to take seriously the defense of themselves and their families, but i'm afraid that years of living in the suburbs has convinced them that it won't happen to them.
my mom's family probably has some members with guns, perhaps even several of them. but i really wouldn't know because i made a choice long ago to have nothing to do with those people.
now my wife's family...they are extremely pro-gun...