Henry Tudor was born at Pembroke Castle in 1457, grandson of Owain Tudor of Anglesey. As a Lancastrian claimant he spent fourteen years in exile in Brittany and France.
In August 1485 he landed at Mill Bay near Dale and marched through Wales gathering support, including from Rhys ap Thomas. He defeated Richard III at Bosworth, and many Welsh people saw the old prophecies of a Welsh king fulfilled. He named his eldest son Arthur.
Ganed Harri Tudur yng Nghastell Penfro yn 1457, yn ŵyr i Owain Tudur o Fôn. Fel hawlydd Lancastraidd treuliodd bedair blynedd ar ddeg yn alltud yn Llydaw a Ffrainc.
Ym mis Awst 1485 glaniodd ger Dale a gorymdeithio drwy Gymru yn casglu cefnogaeth, gan gynnwys gan Rhys ap Thomas. Trechodd Risiart III ym Mosworth, a gwelodd llawer o Gymry hen broffwydoliaethau am frenin o Gymro yn cael eu gwireddu. Enwodd ei fab hynaf yn Arthur.