I am looking for my relatives in USA, surname is Safar?

My grandfather's brother went in America 1909. His name was Ivan Safar and he was from Croatia, village Kalic. He was 18 years old young lad when he arrived in Ellis Island. I have one his picture filmed in Wisconsin. So if someone have any information about his children or grand-children I would be grateful. More information about him is possible to find on this Ellis Island site address, under record no. 10: http://www.ellisisland.org/search/matchMore.asp?FNM=IVAN&LNM=SAFAR&PLNM=SAFAR&CGD=M&first_kind=1&kind=exact&offset=0&dwpdone=1