Searching for Kouril and Feiler

Hello, I am currently seeking any info on Vaclav Kouril and his wife Antonia. They were my great great grandparents. Vaclav was born in Praha-Zizkov on March 20, 1863. He came to the USA in 1903. Antonia was born on July 12,1868. I think she was born in Prague also.I am also looking for any info on Louis Feiler born in Jechnitz, Bohemia on November 7, 1888. I would appreciate any info on my reletives. Thank you so much.