Leonardo, the illegitimate son of Ser Piero di Antonio da Vinci, would have spent the years of childhood and early youth entrusted to the care of his paternal grandparents and uncle, in the house of the village of Vinci. Grandmother Lucia was originally from Bacchereto, and she also was the daughter of a notary, Piero di Zoso. However, her family of origin had made its fortune through production and trade in pottery, the famous ceramics of Bacchereto: Zoso, the oldest ancestor we know of the family of Leonardo's grandmother, was in fact a pottery vender. Zoso di Giovanni is mentioned in Bacchereto back in 1371, and at the beginning of the 15th century, he produced "earthen bowls," with which he supplied one of the oldest hospitals in Prato. Grandmother Lucia's family had several properties in Bacchereto (certainly a house in Torre), some of which, in the second half of the 15th century, were no longer useful for this family branch, who were by this time dedicated to the notarial practice. In fact, afterward, Lucia's father, notary Ser Piero di Zoso, and also his brother, Baldassarre, became notaries. In 1480, Ser Baldassarre of Ser Piero di Zoso, Leonardo’s great-uncle, declared that he still possessed, in that of Bacchereto, a house in the locality of Toia and another house "with pottery kiln" in the locality Croce a Toia. Only two years later, these assets were ceded to Leonardo’s family through an act of donation. It was a complex of properties, of the not inconsiderable value of 300 florins, which included a house “for the lord” and two “for workers,” together with agricultural lands (grain and fodder), olive groves and vineyards, scattered in the area located just east of the settled area of Bacchereto, along the road that still today bears the name Via di Toia. Along this road a plaque on a farmhouse recalls the "Casa di Toia" that tradition would recognize as the home of Leonardo da Vinci’s grandmother.