So I started a TL wherein Anne Neville and Edward of Westminster, son of Henry VI and Marguerite of Anjou, have a posthumous daughter following his death at Tewkesbury, but I stopped since I knew the result I wanted, but was finding it harder to keep things believable. This girl is then an Elizabeth of York-analogue since she is heiress to the Lancastrian claim and (presumably) married to a surviving Edward V in future.
I do have the following questions:
1) Would the Lancastrian supporters (such as were left) support this girl - Anne of Lancaster - or Harry Tudor?
1.1.) Would her existence mean Harry Tudor could come back earlier than OTL?
1.2.) What would the price be (if any) that Margaret Beaufort might have to pay for his return?
2) What would key figures of the day - Marguerite d'Anjou, Edward IV, Margaret Beaufort etc's reaction to this girl would be.
3) Would she be raised with her mother (who still marries Gloucester) or at the court of Edward IV? Or on a time-share basis?
4) What would her style be? And how might the de Bohun inheritance dispute with the Staffords be solved?
Thanks in advance for your replies.