The Welsh are the original inhabitants of Britain, who lived in Wales, and survived attacks by the Romans. According to Herodotus, the Welsh are descended from a tribe called the Silures, who had "curly hair and swarthy complections", and migrated from the Iberian Peninsula at some point. By 555 AD, Wales had been divided into the kingdoms of Gwent and Ergyng, after the death of King Erb of Gwent. Before converting to Christianity, the Welsh had their own religion and folklore, telling tales of the Pwyll, the prince of Dyfed, who is friends with Arawn, lord of the Underworld. Pwyll defeats a rival king in the Underworld, Arawn's enemy, Hafgan. Most of the Welsh deities were depicted as living among humans, and ruling them. Aeron was the Welsh god of battle, and Lyr was the god of the sea, the same as Lir, the Irish god of the sea. The Welsh shared many of the same deities as the Irish did. Wales converted to Christianity sometime in 500 AD. In the early middle ages, between 500 and 800 AD, the Welsh are said to have spoken Old Welsh, which then evolved into Middle Welsh, and later on, modern Welsh.