The story
- Classical Latin · derived fromfrāter germānus
- Anglo-Norman and Middle French · derived fromfrere germain
- Middle English · inherited frombrother germain
- English todaybrother-german
From Middle English brother germain, equivalent to brother + german, after Anglo-Norman and Middle French frere germain and its etymon Classical Latin frāter germānus.
Etymology from Wiktionary, CC BY-SA 4.0.