FamilySearch (https://familysearch.org/pal:/MM9.1.1/QVZF-2Q46 : accessed 17 Nov 2014), Patricia Servaes, 2000. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online"> FamilySearch (https://familysearch.org/pal:/MM9.1.1/QVZF-2Q46 : accessed 17 Nov 2014), Patricia Servaes, 2000. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online">