Einarr [Torf-Einar, Einarr Rögnvaldarson], earl of Orkney (fl. early 890s–930s), magnate, was the youngest son of Earl Rögnvald of Möre (d. c.894) and a concubine, who was said (by Rögnvald) to have been slave-born on both her father's and her mother's side. ...
