Tegwared y Bais Wen

Tegwared y Bais Wen ap Llywelyn, Lord of Trefdraeth was a natural son of Llywelyn the Great, Prince of Aberffraw, by a woman named in some sources as Crysten. He was born circa 1210, although if he was a battle chief in Llywelyn Fawr’s golden era, this would place his birth perhaps a decade or more earlier. 'The white mantle' refers to his coat of arms.