His visit to England in the summer of 1365 was made in order to claim possession of his paternal inheritance (see Thomas ap Rhodri ); but having secured the estate, he left again for France in March 1366 . Late in 1369 (Anglo-French hostilities, suspended since 1360 , having been resumed in April 1369 ), he was deprived of his property in England and Wales for adhering to the king's enemies. At this point in his career Owain became involved in the political side of Anglo-French relations. Though himself a stranger to Wales (his father and grandfather had been long resident in England ) he was very conscious of his hereditary claims as lineal successor of the two Llywelyns , as Froissart makes clear, and seems to have spoken much about them in French court circles. Owain 's pretensions were now exploited by French interests, and plans were laid for diverting English attention by an invasion of Wales under Owain 's leadership. The expedition of 1372 , preceded by a notable proclamation setting out Owain 's claims, got no further than Guernsey , where his exploits recorded in popular song and legend remained long in memory. The English authorities were prepared for an invasion of Wales as early as Dec. 1369 ; it is, moreover, significant that in the following year an inhabitant of Anglesey was condemned for having been in touch with ‘ Owen Lawgoch ,’ an enemy and traitor, for the purpose of starting a war in Wales . The reference in this context to ‘ Owen Lawgoch ,’ considered alongside the later vaticinatory poetry linked with a hero of that name (in one poem ‘ Lawgoch ’ is actually identified with Owain ap Thomas ap Rhodri ) shows that Owain 's fame after his death left a deep impression on Wales .
That he was considered a serious menace in England is suggested by the circumstances of his assassination at the siege of Mortagne-sur-Mer (obviously with the connivance of the English authorities), in July 1378 , at the hands of a Scot , John Lamb , who had wormed himself into Owain 's confidence. He was buried four miles away from the scene of his death, in the church of S. Leger , deeply mourned by a wide circle of associates, the deeds of this proud and generous, albeit passionate, personality, commanding the admiration of some of the leading chroniclers of the age.
Professor Thomas Jones Pierce, M.A., F.S.A., (1905-1964), Aberystwyth
Published date: 1959