The first monastery was founded in 657 AD by the Anglo-Saxon era King of Northumbria, Oswy (Oswiu) as Streoneshalh (the older name for Whitby).[4][5] He appointed Lady Hilda, abbess of Hartlepool Abbey and grand-niece of Edwin the first Christian king of Northumbria, as founding abbess. The name Streoneshalh is thought to signify Fort Bay or Tower Bay in reference to a supposed Roman settlement that previously existed on the site. This contention has never been proven though and alternative theories have been proposed, such as the name meaning Streona's settlement. Some believe that the name referred to Eadric Streona,[6] but this is highly unlikely for chronological reasons: Streona died in 1017 so the naming of Streoneshalh would have preceded his birth by several hundred years.[7]