Zlateca provides you w/an expert guess andI agree with her.However there is a problem.Novosiolka means NEW SETTLEMENT and there are loads of those same name places on what is Ukraine'smap today.
Following info gleaned from Lenius' Galicia Gazetteer (late 18th century to 1919):
Nowosiolka > Borsczow > Tarnipol (today village has been renamed Zbruchanske) Nowosiolka > Podhajce > Tarnipol Nowosiolka > Husyatyn >Tarnipol (today part of Mali Birky village cluster) _____________________________________________________
Danylo (Daniel) and Hawrylo (frequently anglicized to Harry) are distinctly Ukrainian given names.It is highly likely that they were either Greek Catholic or Christian Orthodox???
KOSHLAK (& other variant transliterations of this surname) means OTTER,furry animals of Martin family.Originally a very old ancestor (14-16th century) was probably either hunter or trader of fur skins. ____________________________________________________
Besides Koszlak, do you have any other surnames?I could try cross-running the surnames thru the three villages above.