Notes:

[dunbar_tree.FTW]

http://www.britannia.com/bios/ebk/gwriaym.html offers (2001):
"Guriat was the son of King Elidyr map Sandde. He inherited the crown of
Man in the late 8th century when the local population was a vast mixture of
the British and the Irish. His lasting memorial is the well-known Guriat
Cross, originally erected near Maughold in the North of the Island.
He married, Esyllt, daughter and heiress of King Cynan Dindaethwy of
Gwynedd and was succeeded by their son, Merfyn Frych."

married Eisyllt Queen of Wales on Yes, date unknown. [Group Sheet] [Family Chart]

1. Frych, Merfyn ("Mervin") was born about 780; died in 844.

Notes:

[dunbar_tree.FTW]

http://www.britannia.com/bios/ebk/sanddrd.html offers (2001):
"Sandde was the 3rd great grandson of King Llywarch Hen and heir to his
lost Kingdom of South Rheged. It was Sandde who transferred his family from
Powys to Ynys Manaw (Isle of Man) when he married, Celemion, sister and
heiress of its King, Iudgual, in the mid-8th century. He soon became king of
the island in right of his wife and was later succeeded by their son,
Elidyr."