dynasty - a sequence of powerful leaders in the same family

royal family, royal house, royal line, royalty - royal persons collectively; "the wedding was attended by royalty"

Richard III - King of England from 1483 to 1485; seized the throne from his nephew Edward V who was confined to the Tower of London and murdered; his reign ended when he was defeated by Henry Tudor (later Henry VII) at the battle of Bosworth Field (1452-1485)