In Croatia, Sepich families are Croats (from Buje area ).
Prevalence
About 30 people with faimily name Sepich live in Croatia today, in two households only. They are located in only one small Croatian place, in Antonci in Buje area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1692 in source Catholic Church Parish Records.