Thor Longus or Thor the Long (fl. c. 1113×1124) was an early 12th-century Anglo-Saxon noble associated with Roxburghshire, a culturally Northumbrian and Brythonic Cumbric Celtic (Carvetii, Brigantes, Selgovae) territory ruled by the Scottish king from the 11th-century onwards. A charter dating between 1107×1113 and 1124 claims that Thor the Long founded Ednam, previously a deserted waste granted to him by King Edgar of Scotland.[1]
Ednam lies close to the Northumberland border with Roxburghshire. The charter states that he repopulated the settlement with his own followers and built a church.[1] The charter grants the church to the monks of St Cuthbert.[1] There survives the notice of this grant given by Thor to his lord Earl David (future David I of Scotland), as well as Earl David's confirmation of the same grant.[2]
Thor had a brother named Leofwine, mentioned in Thor's charter as requiring "redemption".[3] Leofwine "the monk" was commemorated in the Martyrology of the Durham Cantor's book for June 2 (day of death), and in the same source Thor Longus was commemorated for May 14.[4] The year of his death and descendants are not known, but Ednam appears to have been transferred into the Crown's hands by 1136,[5] so he can be presumed dead by that date.
Several Scottish families/clans claim either lineage or name-sake of Thor Longus (Longus is Latin for 'Long/Laing/Lang meaning 'Tall' in Anglish/German/Scots/etc):