History of Porro last name

Where does Porro last name come from? Data suggests the following regions: Lombardy, Veneto.
There are 20 ancestors with Porro last name, 6 documents are related to it.

Municipality	Events	Period
Lecco, LC	1	1779
Carimate, CO	3	1878-1906
Monticello Conte Otto, VI	1	1880
Porto Viro, RO	2	1883-1890
Padova, PD	1	1895
Treviso, TV	3	1908-1910
Camposampiero, PD	1	1922
Cermenate, CO	1	1968

Best users

Who contributed for Porro last name?
checco: 15 contributions
3RAT1LUM: 8 contributions
alddemar: 7 contributions
hellalox: 6 contributions
zeronove: 4 contributions