Il cognome Bruno era abbastanza diffuso nell'Ottocento e apparteneva a diversi nuclei familiari tutti piuttosto piccoli, provenienti da vari comuni. Esso compare per la prima volta a San Marco nei registri anagrafici del 1814. Abbiamo contato 16 famiglie, ma di queste sei scomparvero nella prima metà dell'Ottocento.

The surmname Bruno was very popular in the nineteenth century and many different and very small families had it; they came from various towns. The first time this surname was written on the birth registers in 1814. We counted sixteen families, but six of them died out in the first half of the nineteenth century.