Rhydderch II

Rhydderch II Alt Clut a oa mab da Eugein II Alt ClutLenn Harleian genealogy of the Kings of Alt Clut, amañ, ha tad da Dumnagual III Alt Clut hervez an Harleian genealogies .

N'eo anavezet nemet dre ar skrid-se ha n'eo ket sur e oa roue Alt Clut zoken, goude ma vez kontet da vezañ gant an imbourc'herien aliesAlan MacQuarrie,  "The Kings of Strathclyde", in A. Grant & K.Stringer (eds.) Medieval Scotland: Crown, Lordship and Community, Essays Presented to G.W.S. Barrow, (Edinburgh, 1993), p. 12..

Notennoù

Daveoù

 MacQuarrie, Alan, "The Kings of Strathclyde", in A. Grant & K.Stringer (eds.) Medieval Scotland: Crown, Lordship and Community, Essays Presented to G.W.S. Barrow, (Edinburgh, 1993), pp. 1-19

Liamm diavaez
 Harleian genealogy 5

Rummad:Rouaned Alt Clut