I am looking for any info regarding my grandfather, Andrea Pervanja. He was an orchestra conductor in Sarajevo I'm 1942-43 when taken by the Nazi's and neber heard from again

 I am looking for information on his father, my great grandfather, Andrea Pervanja. He was born 1868 in Tomlin, Yugoslavia. He wife, Catherina Kragelj also born in Tomlin. The family moved to San Antonio in Bosco, Trieste, Italy after a railroad employment disability.

Amy info would be greatly appreciated.

Thank you, June