[8]: The pl. form máttig hǫfuð in Flat makes better sense than Bb’s sg. mektugt hǫfuð in the context of an address to three joint monarchs. In Finnur’s reading, ‘mighty head of your line’ could refer either to Eysteinn (which would be rather insulting to Sigurðr and Ingi) or to S. Óláfr.