He had a brother named Minacio, who in 1311 married Pellegrina di Bongiovanni de' Zovenzoni.
By 1307, Tommaso had married Margherita, daughter of Donusdeo della Stipa and widow of Angelello Angelelli.
In accordance with the laws of the time, he had to pay back 119 lire of her dowry to her former father-in-law, Bonfante, but the latter returned it to Margherita.
[1] Gozzadini has sometimes been identified as the author of the Fiore di virtù, originally composed between 1313 and 1323.
This is based on the explicit of two manuscripts, one of which assigns the Fiore to a "brother Tommaso Gozzadini of the Order of Saint Benedict".