User blog comment:Miniminette/Medici Members/@comment-10558422-20131125211757

I believe Lorenzo is the man on the far left. I'm pretty sure Alex did confirm on the Salty Cupcakes stream that the other 3 portraits on the walls are all Lorenzo's sons. So with the third picture being Filia's parents, it means Lorenzo is Filia's grandfather; with Vitale and whoever the fourth man is her uncles.

I'm sure the second picture is still Vitale, though I don't know why he looks so old like you said. I have no idea who the forth picture is of! :)