In Croatia, Grossi families are Croats (from Opuzen ). In the past century, relatively most of Croatian residents bearing this family name were born in Metkovic and Opuzen.
Prevalence
About 20 people with faimily name Grossi live in Croatia today, in 10 households. There were 30 of them in the middle of the past century, and their number decreased by 30 percent. They are only located in four Croatian cities and two other places, mostly in Zagreb (<10), Opuzen (<10), Zadar (<5), Pula (<5), and in Gradac in Ploce area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.