I have a Frederick and Catharina Mohr who were in Allegheny Co., PA in the 1870 census. Their children were Mary, Frederick, Catherine, Caroline, Lilia, William, Kuhn and Kate. In 1880 census, they were in Baltimore, MD. I am related through younger Frederick and also have information on his brother William, but not on any of the other children. Mary born abt. 1865, Kate abt. 1870.