| Sources |
- [S3040] Maria Barbara Obenland and Johann Friederich Gras Marriage Record, (Name: Intellectual Reserve, Inc; Location: Salt Lake City, UT;), "Deutschland, Heiraten, 1558-1929," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/N8SJ-1JZ : accessed 25 February 2015), Johann Friederich Graess and Maria Barbara Obenland, 26 Jun 1792; citing Ilsfeld, Württemberg, Germany; FHL microfilm 1,528,630.
- [S3041] Johann Friedrich Gras Birth and Christening Record, (Name: Intellectual Reserve, Inc; Location: Salt Lake City, UT;), "Deutschland, Geburten und Taufen, 1558-1898," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/NCWF-6JW : accessed 25 February 2015), Johann Friedrich Grass, 17 Oct 1776; citing ; FHL microfilm 1,187,105.
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