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- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 27 Jun 2016), entry for Dirk III Count Holland & West F, person ID 9H6M-LHF.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 27 Jun 2016), entry for Dirk III Count Holland & West F, person ID 9S9R-G3S.
» Quellen » Familienstammbaum M. Tolsma » Genealogie Online">
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- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 27 Jun 2016), entry for Dirk III Count Holland & West F, person ID 9H6M-LHF.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 27 Jun 2016), entry for Dirk III Count Holland & West F, person ID 9S9R-G3S.
» Quellen » Familienstammbaum M. Tolsma » Genealogie Online">