FamilySearch (https://familysearch.org/pal:/MM9.1.1/QV3D-6B8G : accessed 17 Nov 2014), William M Servais, 1924. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online"> FamilySearch (https://familysearch.org/pal:/MM9.1.1/QV3D-6B8G : accessed 17 Nov 2014), William M Servais, 1924. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online">