Ninian is a Christian saint, first mentioned in the 8th century as being an early missionary among the Pictish peoples of what is now Scotland. For this reason he is known as the Apostle to the Southern Picts, and there are numerous dedications to him in those parts of Scotland with a Pictish heritage, throughout the Scottish Lowlands, and in parts of Northern England with a Northumbrian heritage. He is also known as Ringan in Scotland, and as Trynnian in Northern England. Ninian's major shrine was at Whithorn in Galloway, where he is associated with the Candida Casa (Latin for 'White House'). Nothing is known about his teachings, and there is no unchallenged authority for information about his life. The nature of Ninian's identity is uncertain, and historians have identified the name "Ninian" with other historical figures. A popular hypothesis proposed by Thomas Owen Clancy, a researcher and professor of Celtic studies, posits that Ninian can be identified with three other historical figures: Saint Finnian of Moville, Saint Finnian of Clonard, and Saint Finbarr of Cork. Linguistic variations across the territories associated with each saint have provided evidence that the Ninian preserved in literary tradition originated from this individual. This article discusses the particulars and origins of what has come to be known as the "traditional" stories of Saint Ninian. Background The Southern Picts, for whom Ninian is held to be the apostle, were the Picts south of the mountains known as the Mounth, which cross Scotland north of the Firths of Clyde and Forth. That they had once been Christian is known from a 5th-century mention of them by Saint Patrick in his Letter to Coroticus, where he refers to them as 'apostate Picts'. Patrick could not have been referring to the Northern Picts who were converted by Saint Columba in the 6th century because they were not yet Christian, and thus could not be called 'apostate'. Northumbria had established a bishopric among the Southern Picts at Abercorn in 681, under Bishop Trumwine. This effort was abandoned shortly after the Picts defeated the Northumbrians at the Battle of Dun Nechtain in 685. Christianity had flourished in Galloway in the 6th century. By the time of Bede's account in 731, the Northumbrians had enjoyed an unbroken relationship with Galloway for a century or longer, beginning with the Northumbrian predecessor state of Bernicia. The full nature of the relationship is uncertain.