The Corcu Loígde (Corcu Lóegde, Corco Luigde, Corca Laoighdhe, Laidhe), meaning Gens of the Calf Goddess, also called the Síl Lugdach meic Itha, were a kingdom centred in West County Cork who descended from the proto-historical rulers of Munster, the Dáirine, of whom they were the central royal sept. They took their name from Lugaid Loígde "Lugaid of the Calf Goddess", a King of Tara and High King of Ireland, son of the great Dáire Doimthech (a quo Dáirine). A descendant of Lugaid Loígde, and their most famous ancestor, is the legendary Lugaid Mac Con, who is listed in the Old Irish Baile Chuinn Chétchathaig. Closest kin to the Corcu Loígde were the Dál Fiatach princes of the Ulaid.
The Corcu Loígde were the rulers of Munster, and likely of territories beyond the province, until the early 7th century AD, when their ancient alliance with the Kingdom of Osraige fell apart as the Eóganachta rose to power. Many peoples formerly subject to the Corcu Loígde then transfe