Romanian grammatical structure is mainly Latin and Romanian is related to French, Italian, Portuguese, and Spanish. Contact with other people, has also resulted in words of Hungarian, Turkish, Greek and Bulgarian origin. Romanian language is considered a Latin island in a Slavic sea.
Stanavich is probably a South Slavic surname such as Croatian.
There were many border and political changes in this region. For example, Today the former pre-WW IBanat (H) region of Hungary is divided between Romania, Yugoslavia and Hungary.
Without surname village/town of origin in Romania or wherever you are just wasting your time.