"Deutschland, Sachsen-Anhalt, Bistum Magdeburg, Katholische Kirchenbücher, 1608-1945", database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:6Z9Q-SG4X : 9 February 2021), Johann Ackermann in entry for Franz Xaver Ackermann, 1863.
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