This is a question that I have had for many years that I have not been able to clear up. It all started when I read the Agnes Strickland Lives of the Queens of England volume series through an interlibrary loan.
I seem to remember Ms. Strickland mentioning that Elizabeth of York and King Henry VII had another child that died at birth or soon after and that child's name was George, making a total of eight children between Henry VII and Elizabeth. However, I cannot find any other sources to confirm this. I had simply given up ever finding any other sources to confirm this or refute it so I had kind of forgotten about it.
Recently, this all came back to me as I was reading the Plantagenet Somerset Fry book Lives of the Kings and Queens of England and Scotland and I seem to remember it mentioned that some sources state that Henry VII and Elizabeth of York had a son named Edward that appears in some of the correspondence of the period, but the author was not sure if this was another son, or a variant of the name Edmund, the boy that died at about 18 months old.
Any information that anyone has to confirm or refute this would be greatly appreciated. I would also like to know the sources you have that can verify it as well.