The founder of the Tudor line of British kings was a servant. Yes, this is true. He was Welsh and his name was Owain ap Maredudd ap Tydwr. 'Ap' in Welsh means 'son of', so in English his name translated as Owen, son of Meredith, son of Theodore.
Apparently Owen worked as a seravnt in Catherine of France's household, wife to the late Henry V. He used to enjoy bathing skinny-dipping in the Thames and Catherine used to spy on him through the reeds. She was so impressed that she wanted to marry him. Of course all hell broke loose when she made this intention public. An official inquiry was held. However, Catherine stood by Owen through it all and finally in 1432 their marriage was official. His surname Theodore was changed to Tudor and history was made.