Did King Richard III have a niece?

Answer:
Yes, he had several. By his oldest brother, King Edward IV, he had seven:

Elizabeth of York (later Queen of England)
Mary of York
Cecily of York, Viscountess Welles
Margaret of York
Anne of York, Countess of Surrey
Catherine of York, Countess of Devon
Bridget of York

And by his other brother, George, Duke of Clarence, he had one:


Margaret Pole, 8th Countess of Salisbury
First answer by Mistress of Chaos. Last edit by Mistress of Chaos. Contributor trust: 32 [recommend contributor recommended]. Question popularity: 2 [recommend question].