Old English brōc

→ English brook (inherited)

→ English breeks (mention)

→ English Braybrooke (mention)

→ English Allbrook (mention)

→ English Bowbrick (mention)

→ Old English brec (mention)

→ Irish bróg (derived)

→ Westrobothnian brok (cognate)

→ Icelandic brók (cognate)

→ Old Irish bróc (borrowed)