Hi,
I did additional search and I found, that in this vicinity
are surnames GIECKO and CAL .
Ask about Jozef Giecko [+ all your English spellings] and
Anna Cal - do not ask for anglicized surnames, nobody
in Gmina will perform research for you, how should be correct Polish spelling.
In Kulno was Ortodox church and all documents were in
Russian - after 1920, documents should be in Polish.

You have full address for envelope...expect reply in Polish.

Good luck in search ...

Wladyslaw

PS
My ancestors are from this prowince [near Sandomierz], but we are Roman Catholics.