Hi Olga
I am researching my husband's paternal family tree and I believe that the Zdenek Korycan you are looking for is also my husband's birth father. Zdenek Korycan was known as Daniel Corrigan after he immigrated to Australia in 1950. Records we have show Zdenek's birth date as 12 March 1931 and that he was born in Prerov, Czech. If you believe that this is the person you are seeking please email me.
I hope to hear from you soon
Donna