Welsh soldier Rhys ap Thomas picked the right side at the Battle of Bosworth when he placed his army of 2,000 men at the disposal of Henry Tudor, soon to become Henry VII.
Ochrodd y milwr o Gymru, Rhys ap Thomas, gyda’r blaid gywir ym Mrwydr Bosworth pan drefnodd bod ei fyddin o 2,000 o ddynion ar gael i wasanaethu Harri Tudur, a ddaeth yn fuan yn Harri VII.