I've checked for the 4 permutations we have records on of the name of my Grandmother's Father (Koprovic, Koprovich, Koprowicz, Koprowski) and get no results. Being an ex-Mormon, that was one of the first places I looked.
The tree goes like this:
<pre>
--Dad
Me -- --Grandpa
--Mom-- --John Cyril Koprovic
--Grandma (Rose)--
--Marianna Sprc'e
</pre>
The document I have is Rose's Brother (Frank)'s Roman Catholic Baptismal Certificate. It lists John's Surname the 4 ways I have it above, birthplace says "MorOstrava" (took me 2 hours to figure out that meant Moravia, Ostrava) and his occupation as a miner, and Marianna's Birthplace as Janovicich, which is the regional name of Janovice, 10 miles se of Ostrava.