I've said some unkind things about that portrait rendering, but I wouldn't quite say it looks like a ten-year-old corpse.
I always heard it was Alexander Hamilton's eagle on the reverse. Aaron Burr wanted his on there instead.
A raped scarecrow running for it's life was my favorite. According to wiki Jefferson had 4 daughters out of six that died in childhood. His wife died at 33 several months after giving birth to a 16 pounder. No wonder he stayed a bachelor after that.
No one knows exactly who she is, but if you compare her with the Gilbert Stuart Athenium portrait, (The Washington portrait is the one which appears on the one dollar bill.) resemblance is fairly strong. Stuwart started these portraits of George and Martha, but when he got part way through, he desided that the one of George was so good that he wanted to keep it. He never finished the painting. He kept it to make copies of it. Stuward painting many Washington portraits of varying quality. He called them his "$100 bills" because that how much he got for them.