He may have married Anna Maria Grosstopf at about age 16.
inferred from burial record for Elisabetha Nikolaus born about 1819."Deutschland, Baden, Erzbistum Freiburg, katholische Kirchenbücher, 1678-1930," database, FamilySearch (Web Page: 14 May 2018), Johan Adam Nikolaus in entry for Elisabetha Nikolaus; citing Burial, Weingarten, Durlach, Baden, Deutschland, 20, Erzbischöfliches Archiv Freiburg (Archbishop's Archives), Germany.
He may have married Elisabetha Schauselberger before age 39.
inferred from burial record unnamed Nikolaus born in 1835. "Deutschland, Baden, Erzbistum Freiburg, katholische Kirchenbücher, 1678-1930," database, FamilySearch (Web Page: 14 May 2018), Johann Adam Nikolaus in entry for Nikolaus; citing Burial, Weingarten, Durlach, Baden, Deutschland, 29, Erzbischöfliches Archiv Freiburg (Archbishop's Archives), Germany.
There was probably at least one other man in Weingarten with the name Johann Adam Nicolaus.
Inferred from burial record for Magdalena Nikolas, age 17, who was born about 1808 - "Deutschland, Baden, Erzbistum Freiburg, katholische Kirchenbücher, 1678-1930," database, FamilySearch (Web Page: 14 May 2018), Joh Adam Nikolaus in entry for Magdalena Nikolaus; citing Burial, Weingarten, Durlach, Baden, Deutschland, 15, Erzbischöfliches Archiv Freiburg (Archbishop's Archives), Germany.
While it would be may be possible that a 11 year old male fathered a daughter, it is unlikely.
Sources
↑ "Deutschland, Baden, Erzbistum Freiburg, katholische Kirchenbücher, 1678-1930," database, (FamilySearch: 16 January 2019), Elisabetha Hammer in entry for Johannes Adamus Nicolaus, 20 Oct 1796; citing Baptism, Weingarten (Zell-Weierbach), Offenburg, Baden, Deutschland, Erzbischöfliches Archiv Freiburg (Archbishop's Archives), Germany. Note: Likely transcription error - infants name is Johannes Martinus (Johann Martin).
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