In Croatia, Blagonich families are Croats (from Pula ). In the past century, relatively most of Croatian residents bearing this family name were born in Pula.
Prevalence
Only a few people with faimily name Blagonich live in Croatia today, in one household only. They are located in only one small Croatian place, in Pagubice in Pazin area (<5).
Outside Croatia
Family name Blagonich is present in this form only in Croatia.
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.