I would like to find family of my great great grandfather, Christian Ostermann. He was born 4-1-1813. somewhere around Herzogtum. He married (Justine) Sophie Conradine Amalie Bennefeld in Polle, approx 1844. I would like to find information on either one of these familys. Christian worked in a mill in Brevorde, before he left for the USA with his family, and His two sisters Wilhelmina and Caroline.
He may also have a sister Charlotta Ostermann Mueller, who married a Fred Mueller. She was born 2-6-1815.