Isabella Neville (1451-1476) was the younger daughter of Richard Neville, 16th Earl of Warwick, the Kingmaker of the war of the roses. In 1469 she married George, Duke of Clarence. She was the mother of Margaret Pole, Countess of Salisbury and Edward, Earl of Warwick.
Catherine Neville was last heard of at the coronation of her nephew Richard III in 1483.
Notes: called "the Rose of Raby" (because she was born at Raby Castle in Durham, England) and "Proud Cis" (because of her pride and a temper that went with it).
A younger son of Richard Neville, Earl of Salisbury and Alice Montagu, Countess of Salisbury, and a brother of Richard, Earl of Warwick the Kingmaker.