FamilySearch (https://familysearch.org/pal:/MM9.1.1/2H7T-4J9 : accessed 11 Jul 2014), William R Servaes, 1953. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online"> FamilySearch (https://familysearch.org/pal:/MM9.1.1/2H7T-4J9 : accessed 11 Jul 2014), William R Servaes, 1953. » Quellen » Familienstammbaum Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online">