Okay so i'm thinking about putting together a timeline where Henry VI and Margaret of Anjou had a daughter, Catherine/Margaret born in around 1455. In this TL however she will fall into Yorkist hands after Towton and not accompany her mother to Scotland or France. Edward IV has a bargaining chip but what does he choose to do with her? Who does she marry, a Lancastrian Princess in York hands. By the late 1460s she will be of marriageable age, does she marry Clarence or Gloucester perhaps? What do you reckon?