There must be a connection. Do you live in Germany? My grand father Frederick Bartels and my grandmother Frederikca (Ostmeyer) Bartels visited Germany in 1928. My grandfather wrote an article for Nebraska newspaper about the trip and he mentions visiting my grandmother's relatives in Bielefeld. So there must be Brinkmans and Ostmeyers in Bielefeld related to my family. Also they spelled their names Ostmeier when they first came to the US. Later it was Ostmeyer.