Pizzolotti, almost unique, should be due to incorrect transcriptions of Pizzolotto, which is specific to Trevisano, Valdobbiadene and Morgano, should derive from a hypocoristic form of a dialect nickname originating from the small stature of the progenitor, would be equivalent to the Italian piccoletto.
Buy a heraldic document with your coat of arms
Verba Volant, Scripta Manent