Proto-Germanic *bragną

→ English brain (inherited)

→ Old English brægn (inherited)

→ German Bregen (derived)

→ Middle English brayn (inherited)

→ North Frisian Brain (inherited)

→ West Frisian brein (inherited)

→ Dutch brein (inherited)

→ Saterland Frisian Brainge (inherited)

→ Yola bryne (inherited)