Richard Neville Earl of Warwick had two daughters – Isabel and Anne who he sought to marry to best advantage so that one day a Neville grandchild would rule England and Wales. He was thwarted by politics and the death of Anne’s son Edward of Middleham. Isabel’s son spent most of his short life as a captive before being executed by King Henry VII.
When he was about twenty-two the Kingmaker who had been married to his countess since they were both children became father for the first time to another daughter called Margaret who was born before the Countess gave birth to her eldest daughter Isabel. If Margaret was born in 1450 she would have been fourteen when married Sir Richard Huddleston of Millom. He was twenty-four. As well as land in Coverdale worth £6 pa Warwick dowered his daughter with the manors of Blennerhasset and Upmanby in Cumberland.
The Kingmaker had three grandchildren from the strategic northern match he made for his illegitimate daughter. Richard, Margaret and Joan. Circumstantial evidence suggests that Richard’s northern family were on good terms with their legitimate half siblings as Margaret can be found as one of Queen Anne Neville’s ladies, indeed at the coronation she preceded many more gently born ladies and received a gift from the king. This familial closeness raises the possibility that Margaret was raised at least in part with her half-sisters at Middleham.
More detailed information about Margaret’s family can be found here: