John Francis Loudon1 
Jacoba Wilhelmina Cornelia Barones van Pallandt1 
From 25 September 1856, her married name became Loudon.1
Children of Jacoba Wilhelmina Cornelia Barones van Pallandt and Hugh Hope Loudon
- Constantia Alexine Loudon+1 b. 3 Feb 1859, d. 29 Jan 1948
- Susanna Helena Loudon1 b. 15 Jan 1861, d. 21 Nov 1950
- Frederik Willem Jacob Loudon+1 b. 30 Sep 1862, d. 24 Nov 1935
- James Hope Loudon+1 b. 12 Aug 1868, d. 3 Jan 1952
- Willem Constantijn Hope Loudon+1 b. 9 Jun 1873, d. 17 Apr 1932
Constantia Alexine Loudon1 
Child of Constantia Alexine Loudon and Frederick Jacob Willem Baron van Pallandt
- Reinhard Bernard Jan Christiaan Baron van Pallandt1 b. 24 Jan 1888, d. 28 Mar 1938
Frederick Jacob Willem Baron van Pallandt1 
Child of Frederick Jacob Willem Baron van Pallandt and Constantia Alexine Loudon
- Reinhard Bernard Jan Christiaan Baron van Pallandt1 b. 24 Jan 1888, d. 28 Mar 1938
Reinhard Bernard Jan Christiaan Baron van Pallandt1 
Elisabeth Aldegonda del Court van Krimpen1 
Susanna Helena Loudon1 
Jonkheer Willem Cornelis Alexander Elout van Soeterwoude1 
Ebenezer Wake Cook1 
He was a water-colour painter.1
Frederik Willem Jacob Loudon1 
Child of Frederik Willem Jacob Loudon and Alice Adolphine Barones van Neukirchen genaamd Nyvenheim
- Hugh Auguste Loudon1 b. 26 Sep 1898, d. 4 Aug 1954
