Johann was the son of Redemtes Frey and Maria Anna Vogel Frey. He was born in Wurzach, Germany on April 17, 1818.
He married Maria Sophia Magdalena Jaeger on November 21, 1843 in Mosbach. They had at least 6 children.
"Deutschland Geburten und Taufen, 1558-1898," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:N2JR-YJW : accessed 11 April 2016), Johann Nepomuk Frey, 17 Apr 1818; citing Wurzach, Württemberg, Germany; FHL microfilm 1,046,461.
"Deutschland Heiraten, 1558-1929," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JHKQ-4K9 : accessed 11 April 2016), Johann Frey and Maria Sophia Magdalena Jaeger, 21 Nov 1843; citing Katholisch, Assamstadt, Mosbach, Baden; FHL microfilm 1,046,282.
"Deutschland Geburten und Taufen, 1558-1898," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NKYP-Z92 : accessed 11 April 2016), Johann Nepomuk Frey in entry for Bernhard Frey, 22 Aug 1853; citing ; FHL microfilm 878,223.
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