He was Count Palatine and captain (immediate vassal) of the Holy Roman Empire and lived in Milan, in the parish of San Simpliciano.
He entered public life in 1386, when he was elected Council Settler for Sestiere Comacina in Milan.
When, in the same year, Estorre Visconti was proclaimed Lord of Milan, Giovanni Aliprandi returned home.
There lived also the Count of Carmagnola, who had stopped serving the Duke of Milan and was offering his services to the Venetian Republic.
Documents that came to light in 1800, after the end of the Republic of Venice, and those of the Visconti Archive, show that Giovanni Aliprandi conspired to kill the Count of Carmagnola, in hope to convince the Duke of Milan (his cousin) to remove the ban which had affected his family.