History of Dubois last name

Where does Dubois last name come from? Data suggests the following regions: Sardinia, Lombardy.
There are 14 ancestors with Dubois last name, 16 documents are related to it.

Municipality	Events	Period
Paulilatino, OR	1	1862
Arbus, VS	12	1873-1894
Codogno, LO	1	1875
Guspini, VS	2	1900-1904
Cagliari, CA	2	1901-1972
Padova, PD	1	1908

Best users

Who contributed for Dubois last name?
Fabius: 33 contributions
alddemar: 9 contributions