Bertolet Family History
Bertolet Surname Meaning
Altered form of French and Swiss French Bertholet: from a pet form of the personal name Berthol which is from ancient Germanic Berhtwulf (see Bertholf) and possibly also from Barthélemy (see Bartholomew) or its variant Berthélemy.
The surname in the form Bertolet has also been recorded in France but has died out there.
Source: Dictionary of American Family Names 2nd edition, 2022