Treaty of Union took effect on 1 May 1707. Queen Elizabeth I of England and Ireland, last monarch of the Tudor dynasty, died without issue on 24 March 1603, and the throne fell at once (and uncontroversially) to her first cousin twice removed, James VI of Scotland, a member of House of Stuart and the only son of Mary, Queen of Scots. By the Union of the Crowns in 1603 he assumed the throne of the Kingdom of England and the Kingdom of Ireland as King James I. This personal union lessened the constant English fears of Scottish cooperation with France in a
Saint David's Day for long. Henry Tudor, 2nd Earl of Richmond, who was born in Pembroke Castle as a patrilineal descendant of the Tudor Dynasty of North Wales, became King Henry VII of England after his victory over Richard III at the Battle of Bosworth Field in 1485, to end the Wars of the Roses. Henry's green and white banner with a red dragon became a rallying point for Welsh patriotism with the memory of Saint David on his Feast Day. Henry was the first monarch of the House of Tudor, and during the reign of that dynasty the royal coat of arms