Heinrich Joseph was born in 1848.
"Deutschland Geburten und Taufen, 1558-1898," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NZ59-Z5N : 28 November 2014), Heinrich Joseph Ahrens, 11 Nov 1848; citing ; FHL microfilm 1,050,742.
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