[Ger-Poland-Volhynia] Names an pronuciating

[James]

Hello.
Can anyone she shed light on the location of Klebtsche/Kleschkchi 
I have obtained some family names from the EWZ files, that a source called application for Naturalization to German citizenship,
How do I find out were the families were allowed to go to a holding camp or direct to an destination in Germany ?
Would a german speaking prnounce  Jozczyn so an english speaker would here Yosfin ?

Thanks for any help