Searching for Trasak, Klecak & Holub

I am searching for Karel Trasak (1850?) & wife Louisa Holub from Bohemia (Plzen?). Son Charles (1875) came to America in 1894 and married Mary (Marie) Klecak and settled in NY. I can’t find immigration/naturalization for Charles. The way I know his parents is thru his 2nd marriage to Emma Skudura (marriage certificate).