köken: Probably borrowed from Old Occitan biais (“oblique direction”), of uncertain origin. Possibly via Vulgar Latin *bigassius from Ancient Greek ἐπικάρσιος (epikársios, “athwart”), from ἐπί (epí, “upon”) + κάρσιος (kársios, “oblique”) (root Proto-Indo-European *(s)ker- (“to cut”)); alternatively (preferred by TFLi) from Vulgar Latin *biaxius "with two axes".
köken: < rinne, partly via place names, but also commonly adopted as a surname during the Fennicization of surnames in the late 19th and early 20th centuries