Looking for relatives of Katherine Gross. My Grosses moved from PA to IN also. My ggrandfather, William H. Hoppe, arrived in the US in 1866 or 1868 from Leun, Hesse,Prussia, Germany. In 1869 he married Katherine Gross, daughter of Conrad Gross, also born in Germany. They lived in Erie, PA for at least 8 years (1872-1879). After September 1879, and maybe as late as 1887, they moved to the northwest Indiana - Whiting, Hammond East Chicago areas.
The 1900 Census said they had 7 children - one had died and 6 were living at the time of the census. Ida (12/21/1872), Amelia (9/1/1875) and Oscar 4/1879) apparently were born in Erie Co. Then there is a gap of 8 years before Julius was born in Hanna, Indiana (4/20/1887).