□ Ffin gorllewinol Gaeleg erbyn 1400 Western limit of Gaelic by 1400 Wedi goresgyn gan y Gwyddelod cyn 400 Occupied by the Irish before 400 Brenhiniaeth y Brithwyr Kingdom of the Picts I Tiroedd Coll. I Lost Lands. Amcangyfrifon bras Ardaloedd lie ceir otion o filwyr Eingl-Sacsonaidd cyflogedig o'r cyfnod cyn i r Rhufeiniaid adael Prydain yn 410 Districts where remains of Anglo-Saxon mercenaries have been found, dating from before 410 AD, when the Romans left Britein Dan reolaeth y Brythoniaid hyd at Ruled by the Welsh until C550-600 Dan reolaeth y Brythoniaid hyd at «6M - 650 Ruled by the Welsh until C600-650 Dan reolaeth y Brythoniaid hyd at c650 • 701) Ruled by the Welsh until c6S0-700 m Dan reolaeth y Brythoniaid hyd