Kind of amusing for those that have seen Captain America:
Agent Peggy Carter once had a (much) younger sister named Sharon who hooks up with Cap when he comes out of the ice 20 years later.
Currently in Marvel Comics: Peggy Carter has a niece who hooks up with Cap when he's taken off ice 35 years later.
Now that Cap has been in the ice 70 years... who is Sharon Carter to Peggy?