My Great Grandfather and Great Grandmother immegreted to the US from Yugoslavia (former) in 1898 and 1899

Joseph Lavko
My Great GrandFather came to the U.S. in 1898.  He was never Nauralized. The reason was wrote in a letter that was to be infront of the Naturalization book but has been lost after all these years. So the reason at this point is not known.  I have no idea who his parents are.  I do know he has a brother Louis and sister Jennie.  I don't know if either one f his siblings came to the US.  But if they did I would think thay would be in the Cleveland area.

Anna Brodnick Lavko
Anna came to the U.S. in 1899 from Yugoslavia.  She traveled to Germany and there she got on a ship named Treva(?).  When Anna came to the US she went to Cleveland, Ohio where she met and married Joseph (I believe they were married there but I have not found the marriage record as of yet). On Anna death certifacate there were no parents listed.  I found out that she had a brother Charles and sister Josehpone.  I found out they died in the Cleveland area.  With this information I found out where and when they died.  Also with the combination of the two death certificates I found out what Anna's  parents names were.  I have no other information on Anna's Parents.

Anna's Parents
Joseph Brodnick
Frances Kalisar

Joseph's and Anna's Children
Josephine born June 13, 1900 Cleveland, Ohio died ?
Anna Still Living
Joseph born May 9, 1903 in Akron, Ohio died Jan 1970
Stanley born May 3, 1908 in Akron, Ohio died ?
Elmer born June 8, 1910 In Akron, Ohio died ?
Carl born June 28, 1914 in Akron, Ohio died May 1973
Edward born Nov 13, 1917 in Akron, Ohio died Dec 27 1969 Akron, Ohio

Edward Lavko
Edward Lavko is my mothers father, my grandfather.