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"Deutschland, Geburten und Taufen 1558-1898," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/NZ6G-6FX : accessed 14 Oct 2013), Maximilian Schumm in entry for Michael Schumm, 09 May 1817; citing Ettenhausen; FHL microfilm 901845.