In Croatia, Gjenero families are Croats (from Dubrovnik area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Dubrovnik area.
Prevalence
About 40 people with faimily name Gjenero live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number decreased by 20 percent. They are located in four Croatian counties and four other places, mostly in Zagreb (15), Dubrovnik (<10), Nova Mokosica (<5), Rakovec Tomasevecki (<5), and in Slano in Dubrovnik area (<5).
Outside Croatia
Family name Gjenero is present in three countries on two continents. The family name "Gjenero " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.