Hello Joy,
Well, since last year I've been digging deeper, here's what I can tell you...My line started in Toleto, Ponzone. There was some migration to Cannes and Marseille, and then ultimately to Genova, main city center, Quarto al Mare and Nervi.
Ricaldone and Toleto are both about 10 miles away ( in opposite directions ) from the diocese HQ in Acqui Terme. The diocese answered my email and gave me a very nice set of scans of my ancestors that I knew of so far.
Essentially, my Andrea Ivaldi ancestor was born in 1825 and married Maria Zunino of Piancastagna