Akademik

Bertil
Bertil m
Scandinavian: from a Germanic pet form of various compound names containing the first element berht bright, famous, with the hypocoristic suffix -il. The Blessed Bertilo (d. c.878) was an abbot of St Benignus at Dijon in Burgundy, who was murdered by Norman raiders.
Variant: Bertel.

First names dictionary. 2012.