Genealogy / Searching for Dawids and Deptułas in Kadzidło parish [12]

I hope you get this. My grand father came to the US around 1905. His brother Jozef vouched for him to come in. He also had a brother John here who worked in a shoe factory near Binghampton, NY. He states that he was from Ostrołęka, Poland and his father was Walenty and mother, Franscis. He also stated thathis father had at least 3 wives and a total of a lot, over a dozen children. Maybe a connection. I tooo am having much difficulty in finding my roots in Poland.