"United States Census, 1880," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M8S5-79P : accessed 21 Nov 2012), Jacob Altwies, New Riegel, Seneca, Ohio, United States; citing sheet 292D, family 0, NARA microfilm publication T9-1065.
"Ohio, County Marriages, 1789-2013," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:2QHZ-LR3 : accessed 28 September 2015), Jacob Altwies and Catherine Kittenmeyer, 22 Nov 1847; citing Seneca, Ohio, United States, reference ; county courthouses, Ohio; FHL microfilm 388,649.