Kolarik

I am searching for the place of origin for my ancestor John (Jan) Kolarik. He was born on May 16, 1840 or even possibly in 1841 in the modern day Czech Republic. In all of the American records regarding him, he is mentioned of being born in “Bohemia”, but unfortunately that leaves hundreds of villages to possibly be his hometown. John immigrated between 1867 and 1869. In 1871, John married Theresa Beck at St. Wenceslaus Catholic Church at Greenstreet in Manitowoc County, Wisconsin. On John’s marriage record, his parents are listed as Adalbert (Vojtech) and Marie Kolarik.

This is all of the information on the ancestor that I am desperate to find. If anyone could possibly lead me in the right direction to finding him, it would truly be greatly appreciated.