Dear radarays
FYI Yugoslavia has not existed for over 20 years.
Perhaps they were Bohemian (Czech) as the place you found Donji Sredjani is in the region were there are still people of Czech descent.
The link below takes you to a video about Czech minorities in this village
https://www.youtube.com/watch?v=gSlZy1VrO4EIn fact the LEDER name is still found in this village, as evidenced by the Croatia online phone book
http://imenik.tportal.hr/show?action=pretraga&type=bijel...I would like to invite you to the Croatian Heritage and Genealogy Facebook Group, with over 2,500 members worldwide it is by far the largest such forum in existence.
https://www.facebook.com/groups/croatianheritageandgenealogy...Robert Jerin
Croatian Heritage and Genealogy Facebook Group
https://www.facebook.com/groups/croatianheritageandgenealogy...