While you will find reference to a Manaster in Croatia and a Jaroslaw in
Poland on the web, you should really start by being in direct contact
with "Galizien German Descendants" (GGD).
Send GGD your query with full genealogy details and vital dates of the
surname(s) in question. GGD has access to the Galezien Gazetteer by
Lenius, with a listing of Germanic villages and parishes in that
Austro-Hungarian crownland.
All three of these and more are found on the web site of the Federation
of East Europeam Family History Societies (FEEFHS). GoTo this URL:
Clickon the hot link index in the middle of the first screen and type in
your locations and GGD one at a time. You will see a list of hypertext
links for more information on each of them.
Good Luck
John Movius of FEEFHS