The basis of the modern Manx language is Primitive Irish (like modern Irish and Scottish Gaelic). The island lends its name to "Manannán", the Brythonic and Gaelic sea god who is said in myth to have once ruled the island. Primitive Irish is first attested in Ogham inscriptions from the 4th century AD. These writings have been found throughout Ireland and the west coast of Great Britain. Primitive Irish transitioned into Old Irish through the 5th century. Old Irish, dating from the 6th century, used the Latin script and is attested primarily in marginalia to Latin manuscripts, but there are no extant examples from the Isle of Man.