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Male Seisyll or Serwyl of BRITAIN Click to view Seisyll or Serwyl of BRITAIN in the family tree

Seisyll or Serwyl of's father was Gwrwst ben Rhiwallon King of BRITAIN.  His paternal grandfather was Rhiwallon ben Cunedda, King of BRITAIN.  He was an only child.  Seisyll or Serwyl of is no longer alive.


Seisyll or Serwyl of's family

He had a biological son named Antonius ben Siesyll, Duke of.