Hi Jerry, I have not descendants but I have ancestors of Jakob Kozina.
Kozina Thomas son of Adam and Anna Seidl, born 17th Apr 1825 in Tlumacov, + 1909 Stangelville, emigrated after 1867 with his family to Wisconsin.
He married before 1846 to Vogeltanz Marie born 30th Jan 1825 in Tlumacov.
The Children: Katharina 1851 in Tlumacov married to Josef Kunesh.
Jan+1846 in Tlumacov
Jan 1847 Tlumacov
Anna 1849 Tlumacov, married to Mach Jan
Josef 1857 +1865 Tlumacov
Jakub born1st Aug 1862 in Tlumacov, married to Frantiska Wishka born abt. 1865 Karlton
Georg 1866 Tlumacov married to Barbora Forst b.1875 Stangelville
Marie 1867 Tlumacov married to Josef N.Rebitz b.1867 Manitowoc Co.
Tlumacov (Tillmitschau) is the big village 4 km southern from Domazlice town in Southwest Bohemia.
All the best from Czech. Tony.