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Male Rivallon (Rhiwallon) Click to view Rivallon (Rhiwallon) in the family tree

Rivallon (Rhiwallon) was born about 1058.1   Rivallon (Rhiwallon)'s father was Senescal OfDol Alan. He had two brothers named Fledaldus Or Flaald and Senescal OfDol.  He was the youngest of the three children.  Rivallon (Rhiwallon) is no longer alive.1 

1 phelps1609.FTW
Further source/citation:
World Family Tree Vol. 16, Ed. 1 @ Tree #1609