From the pictures I think Henry is a light green cinnamon budgie.
He is definitely young, but I don't think he is younger than Sadie when you got her. If I recall correctly, she still had melanin on her beak and was heavily barred. There seems to be a little iris development on that first photo and he has a tiny tuft of yellow feathers on the forehead.
RIP sweet Tito (Summer 2008 - January 17th 2013).
You are missed and never will be forgotten.