Re: Obrowie, Russia/Poland 1903
Obrowie is the declensioned form for Obrowo. There is more than one place with that name. If your ancestor was from kujawsko-pomorskie province, then it refers to Obrowo, gmina Obrowo, powiat torunski.
map of the gmina in http://www.obrowo.pl/gmina-obrowohttp://www.obrowo.pl/gmina-obrowo