There is a village called Tuchin, or Tutchin, in Ukraine, formerly in Poland. Is this the place you refer to? If so, I think you've hit the spot.
There is a Polish surname, Tuczynski, which I think is from this village name. The Ukrainians would spell it in their own Cyrillic script, which would likely become Tuchinsky in the Roman script. You can see the various forms of the place name here -
http://en.wikipedia.org/wiki/Tuczyn