How about
Richard, Duke of York (1411-1460) m. Cecily Neville (1415-1495)
Anne of York (1439-1476) m. a) Henry Holland, Duke of Exeter (1430-1475), b) Thomas St. Leger (1440-1483)
Anne Holland (1461-1467)
Anne St. Leger (1476-1526) m. Edmund de la Pole, Duke of Exeter
Edward IV of England (1442-1483), r.1461-1470, 1471-1483 m. Elizabeth Woodville (1437-1492)
Elizabeth of York (1466-1513) m. Manuel I, King of Portugal (1469-1521)
John III, King of Portugal (1487-1550)
Joanna of Portugal (1491-1547) m. Richard IV of England (1490-1543), had issue
Others
Mary of York (1467-1482)
Cecily of York (1467-1507) m. Ralph Scrope, Baron Scrope of Masham (d.1515), had issue
Edward, Prince of Wales (1470-1483)
Richard, Duke of York (1473-1483)
Anne of York (1475-1511) m. Thomas Howard, Duke of Norfolk (1473-1554), had issue
Catherine of York (1479-1527) m. Henry Percy, Earl of Northumberland (1477-1527), had issue
Bridget of York (1480-1517), became a nun
Elizabeth of York, Duchess of Suffolk (1444-1503) m. John de la Pole, Duke of Suffolk (1442-1492)
John II of England (1461-1521), r.1505-1521 m. Margaret FitzAlan (?-1524)
Richard IV of England (1490-1543), r.1521-1543 m. Joanna of Portugal (1491-1547)
Edward V of England (1509-1561), m.?
Edward, Duke of York (1492-1520) m.?
John, Duke of Suffolk (1495-1530) m.?
Edmund de la Pole, Duke of Exeter (1471-1528) m. Anne St. Leger (1476-1526), had issue
William de la Pole, Duke of Gloucester (1478-1539) m.?
Richard de la Pole, Duke of Bedford (1480-1540) m.?
George, Duke of Clarence (1449-1478) m. Isabel Neville (1453-1476)
Margaret of Clarence (1473-1541) m.?
Edward, Earl of Warwick (1475-?)
Richard III of England (1452-1505) m. a) Anne Neville (1456-1484), b) Joanna of Portugal (1452-1490)
1a) Edward, Prince of Wales (1473-1484)
Unsure on who John de la Pole's other brothers should marry.