Carlos, thank you for a reply. I too have traced my family to 1540 in Imer. My father and grandparents were all born in the valley. Sperandio is not a direct line, but by marriage. My father's first cousin, Ester Doff-Sotta Sperandio (still living age 92, married Pietro Domenico S.(1909-1977); his father: Francesco S (1874-1945); his father: Pietro Antonio S (1838-1922); his father: Franceso Antonio (1809-1842?); his father: Domenico S. (1783-1838) and finally his father was: Antonio (about 1755-unknown).
If your family connects somewhere along this line, I would be pleased to have the information to add to my family history.
Thank you, Bob Doff-Sotta in Arizona