Bren
From Wiki
Bren
What does the word Bren mean? One example found: Jewish (Ashkenazic): presumably a nickname for a very active person, from Yiddish bren ‘heat’, ‘fervor’, ‘ardor’.
Some of the earliest records of the name Bren are found in the Czech Republic, from the area around Siroky Dul, about 1550.
A member of the Bren branch that moved to Germany invented the Bren machine gun.
Donald Bren, as of 2009, is a California billionaire.