Downham has suggested that between Olaf's death and the arrival of Ragnall in York, perhaps in the latter part of 943, Northumbria was co-ruled by Sitric and Olaf Cuaran.
Downham suxeriu que entre a morte de Olaf e a chegada de Ragnall a York, quizais nos últimos meses do 943, Northumbria estaba a ser gobernada conxuntamente por Sitric e Olaf Cuaran.