"Deutschland Heiraten, 1558-1929," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:J4PS-34Q : 26 December 2014), Adolphum Jonas and Ursula Conradts, 25 Nov 1727; citing Katholisch, Mannheim, Rheinland, Prussia; FHL microfilm 174,563.
Deutschland Geburten und Taufen, 1558-1898," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NRTC-WZX : 28 November 2014), Adolpho Jonas in entry for Mariae Elisabethae Jonas, 10 Sep 1746; citing ; FHL microfilm 174,563.
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