Re: The Family Klimkowski Need Help/Russian Poland
There are two places with name similar to Kulcshyna. It's village Kulcshyny in Khmelnitsky oblast and town Kulcshyn (before - Kulcshyny also) in Volyn oblast in Ukraina.
Volyn was part of Poland for sure, Khmelnitsky- till 1793 only, so I think your Klimkowsky was from Kulchin of Volyn.
You know exact date of birth so I think you can tray with State Archive of Volyn oblast. Here is address:http://www.archives.gov.ua/Eng/Archives/ra03.php
But I also I would recommend to write to State Archive of Zhitomir oblast. Lot of information from Volyn is saved there. For example, I wrote exactly there to get some metrics of people from Volyn. Here is link http://www.archives.gov.ua/Eng/Archives/ra06.phphttp://www.archives.gov.ua/Eng/Archives/ra06.php
The only town of Rubenow I could find is in Germany...