Giovanni Battista di Quadro

He was born Ponte Tresa or Cadro, near Lugano (today Switzerland).

Until 1550, he probably worked in Saxony and Silesia, but on 13 March 1550, he signed a contract with the city council of Poznań for rebuilding the town hall.

In the same year, his name was mentioned in the court books of Poznań because of links between him and the Bishop of Poznań Benedykt Izdebski relating to building the bishop's palace in Krobia.

During these years, he worked for the citizens of Poznań and the clergy and nobles of Greater Poland.

During the years 1550-1552, his brothers Antoni, Gabriel, and Kilian di Quadro also worked in Poznań.