Notes:

Richard of York, 3rd Duke of York (21 September 1411 – 30 December 1460), was a leading English magnate, a great-grandson of King Edward III through his father and a great-great-great-grandson of that king through his mother. He inherited great estates, and served in various offices of state in France at the end of the Hundred Years' War, and in England, ultimately governing the country as Lord Protector during Henry VI's madness. His conflicts with Henry's wife, Margaret of Anjou, and other members of Henry's court, as well as his competing claim on the throne, were a leading factor in the political upheaval of mid-fifteenth-century England, and a major cause of the Wars of the Roses. Richard eventually attempted to take the throne but was dissuaded, although it was agreed that he would become King on Henry's death (being Lord Protector and Prince of Wales in the meantime). Within a few weeks of securing this agreement, he died in battle.

Although Richard never became king himself, he was the father of Edward IV and Richard III.

Within a few weeks of Richard of York's death, his eldest surviving son was acclaimed King Edward IV, and finally established the House of York on the throne following a decisive victory over the Lancastrians at the Battle of Towton. After an occasionally tumultuous reign, he died in 1483 and was succeeded by his son as Edward V, and York's youngest son succeeded him as Richard III.

Richard of York's grandchildren included Edward V and Elizabeth of York. Elizabeth married Henry VII, founder of the Tudor dynasty, and became the mother of Henry VIII, Margaret Tudor, and Mary Tudor. All subsequent English monarchs have been descendants of Elizabeth of York, and, therefore, of Richard of York.

see https://en.wikipedia.org/wiki/Richard_of_York,_3rd_Duke_of_York

Richard + Cecily Neville. [Group Sheet] [Family Chart]

Notes:

Richard of Conisburgh, 3rd Earl of Cambridge (c. 20 July 1375 – 5 August 1415) was the second son of Edmund of Langley, 1st Duke of York, and Isabella of Castile. At the age of forty he was beheaded for his part in the Southampton Plot, a conspiracy against King Henry V. He was the father of Richard Plantagenet, 3rd Duke of York, and the grandfather of King Edward IV and King Richard III.

Richard + Anne Mortimer. Anne died on 21 Sep 1411; was buried in Kings Langley, Hertfordshire. [Group Sheet] [Family Chart]