Prince of Cambria/Wales Cadvan ap Llewfer
Cadvan ap Llewfer was born about 0188.¹ 

 King of Britain Coel *
Coel was born before 0232.  He died after 0232.

 Strada verch Cadvan (The Fair)
Strada verch Cadvan, known as The Fair, was born about 0233 in Cambria,Britannia.  She died in 0254.