Thank you! I have taken a brief look at the parish registers in the cz archives online, but am discouraged by the lack of info I have.... Strakonice has so many areas/registers... and I am not even sure which religion ... possibly RC but that is iffy. Do you know Ferdinand's religion and if he was born in Volenice? Also have you ever seen any variations on the 'czech' spelling of Sluka?
For me, it's back to the 'needle in the haystack' with regard to my 'Bohemian' roots! :( However, I much appreciate your interest and info! :)