"Deutschland Geburten und Taufen, 1558-1898," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NZN7-DTT : 10 February 2018), Theresia Huth in entry for Johann Mauss, 29 Dec 1869; citing Delhoven, Rheinland, Preußen, Germany; FHL microfilm 939,289.