Henry launched his attack from the Pembrokeshire coast and by defeating Richard III at Battle of Bosworth, ended the thirty years of civil unrest known as The Wars of The Roses.
Lansiodd Harri ei gyrch milwrol o arfordir Sir Benfro, a thrwy drechu Rhisiart III ym Mrwydr Maes Bosworth, rhoddodd ddiwedd ar 30 mlynedd o aflonyddwch sifil a elwir yn Rhyfeloedd y Rhosynnau.