sentences:  After the death of Owain Gwynedd in 1170, the mantle of paramount Welsh ruler was taken up by Rhys ap Gruffydd, who was called "Head of all Wales" by the Brut y Tywysogion on his death in 1197.His direct rule was limited to Deheubarth.For a list of Welsh rulers upon whom titles such as these were bestowed (leading ultimately to the title Prince of Wales), see King of the Britons.