I just returned home from my vacation.
Potochyshche (in Ukrainian), has a population of 1490, and 633 homes. There are 3 Mateiko (in Ukrainian) listed in the phone directory. They may be cousins, as they all have different fathers' initial. The fathers' initial of the first listed is F., the second, A.., and the third D. It is possible that there may be 5 Mateiko families that live there. Not everyone can afford a phone, or have a reason to own one. My family live in a village next door to Potochyshche. Since I found them in 1996, I visit them almost every year. One of my cousins granddaughter married a boy from Potochyshche. His mother is a school teacher. If you send me more information on your family, I can phone and ask her to do a family search for you. My address is firstname.lastname@example.org
Also, there are 2 Mateiko families listed in Horodenka, which is around 6 miles NE from Potochyshche. One of them, his fathers' initial is I. and the other is D. for Dmytro. Horodenka is a small city, with a population of around 10,000