The year is 1487 and Henry VII (Henry Tudor) has been king for almost 2 years but there are still many who wish him and his followers ill.
Yn y pen draw, syrthiodd Dinefwr i reolaeth y Saeson ym 1287 ac yno a fu am ganrifoedd, er gwaethaf ymgais Owain Glyndŵr at ei gipio’n ôl yn ystod ei wrthryfel ym 1403.