Owain Lawgoch, (English: "Owain of the Red Hand", French: "Yvain de Galles"), full name Owain ap Thomas ap Rhodri (c. 1330 - July 1378), was a Welsh soldier who served in Spain, France, Alsace and Switzerland. He led a Free Company fighting for the French against the English in the Hundred Years' War. As the last politically active descendant of Llywelyn the Great in the male line, he was a claimant to the title of Prince of Gwynedd and of Wales. Following the death of Llywelyn ap Gruffudd in 1282, Gwynedd along with the remainder of Wales came under the rule of the king of England. Llywelyn's daughter Gwenllian ferch Llywelyn was committed to a nunnery at Sempringham, while the sons of his brother Dafydd ap Gruffydd were kept in Bristol castle until their deaths. Another of Llywelyn's brothers, Rhodri ap Gruffydd, spent much of his life in England. By his second wife, Katherine, he had a son, Thomas, the father of Owain. Rhodri was content to end his life as a country gentleman in England, and though his son Thomas ap Rhodri used the four lions of Gwynedd on his seal he made no attempt to win his inheritance.