In Croatia, Grus families are generally Croats (from Rijeka ), very rarely Italians. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka.
Prevalence
About 20 people with faimily name Grus live in Croatia today, in 14 households. There were 40 of them in the middle of the past century, and their number halved. They are located in two Croatian counties, four cities and threee other places, mostly in Rijeka (15), Matulji in Opatija area (<5), Zadar (<5), Dragozetici on the Island of Cres (<5), and in Kastav (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.