FamilySearch (https://familysearch.org/pal:/MM9.1.1/2FCZ-4MB : accessed 17 Nov 2014), Sophia Servaes, 1900. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online"> FamilySearch (https://familysearch.org/pal:/MM9.1.1/2FCZ-4MB : accessed 17 Nov 2014), Sophia Servaes, 1900. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online">