House of Tudor ruled their domains for just over a century. Henry VIII was the only son of Henry VII to live to the age of maturity. Issues around the royal succession (including marriage and the succession rights of women) became major political themes during the Tudor era. The House of Stuart, descended from Henry VII's daughter Margaret, came to power in 1603 when Elizabeth I died and the Tudor line failed. For analysis of politics, diplomacy and social history, see Tudor period. The Tudors descended on Henry VII's mother's side from John Beaufort, 1st Earl of Somerset, one of the illegitimate children
House of Tudor Medici, was suspected of ordering the St Bartholomew's Day massacre of tens of thousands of French Protestant Huguenots in 1572. Elizabeth bowed to public feeling against the marriage, learning from the mistake her sister made when she married Philip II of Spain, and sent the Duke of Anjou away. Elizabeth knew that the continuation of the Tudor line was now impossible; she was forty-eight in 1581, and too old to bear children. By far the most dangerous threat to the Tudor line during Elizabeth's reign was the Spanish Armada of 1588, launched by Elizabeth's old suitor Philip II of Spain