ein persóna þrennrar greinar ‘one person of the threefold branch’: One of the three persons (the theological term for God the Father, Jesus, and the Holy Spirit) who make up the three ‘branches’ of the Trinity. The epithet is tautological: it is the equivalent of ‘one person of the three persons’ or ‘one branch of the three branches’. Cf. HómÍsl 1993, 29v: …guþ fꜵþor almátkan. oc ſun oc anda helgan. Þriár greiner oc eitt veʟde ‘God the Father almighty, and Son and Holy Spirit: three branches and one authority’.