Hello

I am new into the world of Geneology, especialy the Serbian side of my family tree. My grandfather's name is Savo Cibric who was born in Ruma, District of Srem in Vojvodina. I was hoping someone can tell me anything about the Cibric name and if they have a Cibric in their tree. I ideally would like my grandfathers birth certificate but dont know where to get it. Can anyone help me at all please?