Alderney late 300s, at above the island's only natural harbour. The etymology of the island's name is obscure. It is known in Latin as "Riduna" but as with the names of all the Channel Islands in the Roman period there is a degree of confusion. "Riduna" may be the original name of Tatihou, while Alderney is conjectured to be identified with "Sarnia". "Alderney"/"Aurigny" is variously supposed to be a Germanic or Celtic name. It may be a corruption of "Adreni" or "Alrene", which is probably derived from an Old Norse word meaning "island near the coast". Alternatively it may derive from
Manitoulin Island in Ontario. Manitoulin means "spirit island" in "Anishinaabemowin" (Ojibwe language). The island is considered sacred by the Native Anishinaabe people, who identify as the "People of the Three Fires." This loose confederation is made up of the Ojibwe, Odawa and Potawatomi tribes. The North Channel was part of the route used by the French colonial voyageurs and coureurs des bois to reach Lake Superior. The first known European to settle on the island was Father Joseph Poncet, a French Jesuit, who set up a mission near Wiikwemkoong in 1648. The Jesuits called the island ""Isle de Ste-Marie"." The endemic Eurasian