'''Gwallog ap Lleennog''' (several [[MiddleOld Welsh]] variant''Guallauc'', orthographies[[Middle includeWelsh]] '''Gwallawc''; fabhis Lleynawc''father's ;name standardis [[Welshspelled language|Welsh]]variously :''Lleinauc'', ''GwallogLleynna[u]c'', ap Llëenog''Lleenawc'', orand ''LlëynogLlennawc'') was a hero of the [[Hen Ogledd]]. He has long been considered a probable sixth-century king of the [[Sub-Roman Britain|sub-Roman]] state of [[Elmet]] in the [[Leeds]] area of modern [[Yorkshire]], though some more recent scholarship would identify him more tentatively simply as a 'king of an unidentified region in the north'.<ref>Thomas Owen Clancy (ed.), ''The Triumph Tree; Scotland's Earliest Poetry, AD 550-1350'' (Edinburgh: Canongate, 1998), p. 14.</ref>
