FamilySearch (https://familysearch.org/pal:/MM9.1.1/JHDL-8BM : accessed 23 Nov 2014), Johann Hermann Servaes and Hendrina Sophia Offermans, 30 Apr 1859; citing Straelen, Rheinland, Prussia; FHL microfilm 1050201. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online"> FamilySearch (https://familysearch.org/pal:/MM9.1.1/JHDL-8BM : accessed 23 Nov 2014), Johann Hermann Servaes and Hendrina Sophia Offermans, 30 Apr 1859; citing Straelen, Rheinland, Prussia; FHL microfilm 1050201. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online">