Henry IV's sons are all pretty well-known, but his daughters never get much of a mention -- Blanche married the elector palatine and died youngish, and Philippa became queen of Denmark and led the defense of Copenhagen against the Hanseatic League.

(Then she sent out a retaliatory expedition that failed, and her crazy husband beat the shit out of her, while she was pregnant. She retired to a convent where she had a miscarriage and shortly thereafter became ill and died: you see what I mean about depressing endings.)