Deutschland, Rheinland, Bistum Trier, katholische Kirchenbücher, 1704-1957, database, FamilySearch (https://familysearch.org/ark:/61903/1:1:WXWV-31T2 : 12 September 2019), Mariae Detemple in entry for Michael Petrus Müller, 19 Dec 1873; citing Birth, certificate 58, Züsch, Trier, Rhein, Preußen, Deutschland, Bistumarchiv (Diocese Archive), Trier, Germany.