Joseph Klika, Orphan

I am searching for any family information for Joseph Klika, born about 1845 in, I believe Prague. He came to the USA with the Mathias Dohnal family in December 1855 and lived in Wisconsin all his life. His granddaughter told me he was an orphan or was born out of wedlock. She believed that ‘Klika’ was his mother’s name. Some family lore indicates that his father was a sailor.

I’m also going to be in Prauge for three days in early October 2013 and would be interested in trying to check some local records.

Any assistance would be greatly appreciated as I’ve met with dead end searches.