From his maternal grandfather, Leonardo was granted the fortress of Refrancore, which he held under the title signore (lord).
Leonardo IV Tocco, born at some point in the 1510s,[2] was the son and heir of Carlo III Tocco, titular Despot of Epirus and Count Palatine of Cephalonia and Zakynthos.
As a nobleman, he is attested as a patrician of Venice and as the Lord (signore) of Refrancore.
[2] The fortress of Refrancore had been granted to Leonardo by his maternal grandfather, Constantine Arianiti, who periodically served as regent of the nearby Montferrat.
Leonardo owned several mills in Italy as well as some stores in the markets of Milan.