Sandde ap Gwyddno
Sandde's father is
Gwyddno ap Geraint
. His paternal grandfather is
Geraint ap Garanogg
. He is an only child.
Ancestor Pedigree Chart
Rhychwin Farfog ap Helig Foel
*
Cynwas ap Rhychwin Farfog
Garannog Glewddigar ap Cynwas
Geraint ap Garanogg
Gwyddno ap Geraint
Sandde ap Gwyddno
*
There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
Sandde's family
He has a biological son named
Pyll
.
Children
Pyll ap Sandde
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Sandde ap Gwyddno 
Sandde ap Gwyddno