Arthen ap Seisyll
Arthen son of Seisyll (Welsh: Arthen or Arthgen ap Seisyll; died c. 807) was a king of Ceredigion in Wales of the Early Middle Ages. His father was Seisyll ap Clydog.
The Annals of Wales mentions his death. Phillimore's reconstruction dates the entry to 807.
References[edit]
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