Riothamus biography of abraham
510s wikipedia
1.
Bc century
Abraham, as a sign of the covenant, circumcises himself, Ishmael (now 13) and his entire household (Genesis - 14).
What happened in 650 ad
GENESIS: The Life of Abraham 2 b.
350s ad
The title King of the Britons (Welsh: Brenin y Brythoniaid, Latin: Rex Britannorum) was used (often retrospectively) to refer to a ruler, especially one who might be regarded as the most powerful, among the Celtic Britons, both before [1] and after [2] the period of Roman Britain up until the Norman invasion of Wales and the Norman conquest of England.