Looking for information on Giacomo Vanetti ancestry (doing this for a cousin).

Giacomo Vanetti unknown birth or death. Lived in Golasecca, Italy.

Two known daughter came to California, USA in 1911: Michelina and Caterina.

Caterina (b. 1876) married Giulio Giudici in Italy and had Mario and Francesco before moving to America.

Michelina married Enrico Albertoni after moving to California. Her daughter, Mary, is looking for more information on her mother, Michelina, and nonna, Giacomo Vanetti, of Golasecca, Italy.

That's all I know. Any help would be appreciated.