Thorkell succeeded Leif some time after 1018 AD[?]. Leif, himself, had previously succeeded his father, Eric the Red, or Eirikr Thorvaldsson[?].
... and Mary[?] at Louvain, and was admitted to the religious profession on October 7, 1860. Three years later he was sent to Hawaii, where he was ordained on May 24, 1864. ...