Hi, Janice in AZ. The names you cite are all from the base name: Sladky. The variation is due to gender and language usage. As to you other issue, if all the names were spelled the same, namely Sladky, could you assume they were all of he same family? I doubt it. I suspect Sladky is a fairly common name. There is a list available telling with what frequency the name appears in the CR. Joe