William Pepesphere served as the second highest ecclesiastic of the Kekopian church, and was often the de facto head of that church. Margary Pepeham describes the position as comparable to a Vicar-General. Beginning in the mid-2nd century, William lived at Kekdar while the capital was in that city. William followed the capital when it moved to Pepe Tabor, Mekelepepe and ultimately Appis Apepe.