Tudor dynasty
The dynasty started when Henry Tudor defeated Richard III at the Battle of Bosworth Field.  This was the final stage of the Wars of the Roses and made him King Henry VII of England.  Arthur, Prince of Wales, was the oldest son of Henry VII and Elizabeth of York. He married Catherine of Aragon. She was the daughter of Ferdinand II of Argon and Isabella I of Castle). Arthur died in 1502 and did not become King.