Looking for any information on Arturo Geminiano Santi (born 1898/1899 Fiumalbo, Modena Italy). Arturo is my grandfather

Father Biagio SANTI(unsure if 100% accurate)
Mother Amibale BRUGIONI (unsure if 100% accurate) they were listed on immigration documents when he arrived in Australia

Arturo left a wife and two children in Italy (names unknown) apparently he thought they were deceased in the war ? He arrived in Australia 17 March 1926 as a widow

Arturo died in July 1970 in Hobart, Tasmania Australia as Arthur James Santi age 72.

Can anyone help me on further information re: his parents, siblings, children, grandchildren in Italy.