[Ger-Poland-Volhynia] Zeretzke/Cerecki from Radom/Lublin/Chelm

[Michael Stockhausen]

On the SGGEE database I found an entry on Karoline ZERETZKE (ID   I138919). It says she was born in Bolstawar on April 8, 1858. 
She was married to Daniel Schiewe and lived/died in Bekiesza, Kr Chelm, Lublin.

I have a few questions:
1. What is the source for the exact birth date?
2. Where could Bolstawar be? (perhaps Boleslawow or something similar)?
3. Which parish was in charge of Bekeisza - Lublin or Chelm (1860s-1880s-1900s)?


Besides:
4. Which Lutheran parish did Pajakow near Pulawy belong to - Radom???

For a friend in the USA I am searching for the marriage Ferdinand Cerecki / Julianne Schroeder, probably in Radom about 1881/82.  (And then Ferdinand's birth).
Karoline was Ferdinand's sister.

Thanks
Michael Stockhausen