Both my maternal grandparent's families are from Ostritsa. A George Suprovich was in my grandparents wedding in Hamilton, Ontario, in 1929. There are several Predii (one spelling variation) names in my family tree.
My wife and I visited Ostritsa for two weeks in September 2011 and stayed with rediscovered family. We plan to return in August 2013.
Technically, Ostritsa in south of the Prut River and Kotul Ostritsa is on the north. As we found out, however, it is really a confusing situation for outsiders as names are combined, commingled, etc. by locals.
Sylvia is a great source of help. She is passionate about her work and helped me locate and contact family I had no knowledge of.
I have a 3rd cousin, Stefan Purici PhD, who is the world's foremost authority on Bucovina history. He is a professor in Suceava, Romania, but from Ostritsa.
I have another 3rd cousin, Stefan Purici also, who we stayed with in Prut, adjacent to Ostritsa. He is a well known artist who employees dozens of painters and woodworkers for work in monasteries and churches in Ukraine, Romania, and Moldova.
If I can be of any help, let me know.