Which preposition to use with balducci

at Occurrences 1%

We learn he was so short of money that he had to borrow about 200 ducats from his friend Baldassare Balducci at the bank of Jacopo Gallo.

in Occurrences 1%

A letter addressed under date August 4, 1506, by Giovanni Balducci in Rome to Michelangelo at Florence, proves that some statue which was destined for Flanders remained among the sculptor's property at Florence.

Which preposition to use with  balducci