In Croatia, Lassić families are Croats (from Split ). In the past century, relatively most of Croatian residents bearing this family name were born in Split.
Prevalence
Only a few people with faimily name Lassić live in Croatia today, in one household only. They are located in only one small Croatian place, in Jamnica Pisarovinska in Jastrebarsko area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1691 in source Catholic Church Parish Records.