That is what I was thinking too, but I've not run across that in a registry before. If it is, this is quite possible the Frantisek Simic I've been searching for. It makes a great deal of common sense too, as most of the other surnames in the area are the same common surnames that settled together in the same vicinity in US. The village name is Sedlec, near Potvorov and just North of other villages where I've found inter-married families. The time frame for immigration is EXACT. This is highly likely the family I've been seeking.
I have to confirm it by finding the other family members, but it's at least a hurrah for that. Part of the problem is the town in split between different parishes, and one is not yet online.
Much thanks to EVERYONE who help provide me clues to get this far!