Looking for information on the Vlasak family of Polipsy, Bohemia. Josef Vlasak is has far back as I have and all I have is his name. His children are Josef, Dominic, Olga and Ignatz. Ignatz came to America in 1873. Josef inherited the family home. Olga disappeared and Dominic died a beggar in Prague in 1899. Any information would be appreciated. Thank you!