 It is not clear what the imperial title means in this charter, which appears to have been issued before Sancho's conquest of the city of León, when Bermudo was reduced to ruling Galicia, for the conquest came in 1034 and the charter was drawn between Bermudo's accession in 1028 and the death of Duke Sancho VI of Gascony on 4 October 1032.There exists a charter of 1036 issued by Ramiro I of Aragon, which lists the sovereigns then reigning in Spain thus