yfirhor (OGu) noun

Double adultery, that is, where both participants were married. This word occurs only in GL. The wronged party (malsaigandi, see malsæghandi) was considered to be the husband of the woman in the case, and he received twelve marker as did the ‘authorities’. The wife of the man not receiving any compensation. This is comparable to the situation where a married man commits adultery with an unmarried woman, in which case he pays her, but his wife receives nothing. The penalty was far higher (wergild equivalent or death) if the pair were discovered in flagrante as was the case if only the woman were married. It is worth noting that the expression lerdir ella olerdir ‘ordained or not ordained’ in the B-text of GL, implies that married priests were still a feature of Gotlandic society in the thirteenth century.

double adultery OGu GL A 21 Refs:

KLNM s.v. ægteskabsbrud; Peel 2015, 145 note 21/4; Schlyter 1877, s.v. yfir hor; SL GL, 271 note 2