Comtesse Henriette d’Oultremont 
- [S4047] Ludo Grouwels, “re: Liederkerke Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 27 October 2009. Hereinafter cited as “re: Liederkerke Family.”
Comte René Rasse Antoine Marie Ghislain de Liedekerke de Pailhe1 
- [S4047] Ludo Grouwels, “re: Liederkerke Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 27 October 2009. Hereinafter cited as “re: Liederkerke Family.”
Comtesse Clementine d’Oultremont 
Her married name became de Liedekerke.
Children of Comtesse Clementine d’Oultremont and Comte Edouard de Liedekerke
- Comte Pierre de Liedekerke b. 31 Dec 1947, d. 2 Feb 1948
- Comte Etienne de Liedekerke b. 16 Jan 1949
- Comte Bertrand de Liedekerke b. 18 Aug 1952
- [S4047] Ludo Grouwels, “re: Liederkerke Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 27 October 2009. Hereinafter cited as “re: Liederkerke Family.”
Comte Edouard de Liedekerke
Children of Comte Edouard de Liedekerke and Comtesse Clementine d‘Oultremont
- Comte Pierre de Liedekerke b. 31 Dec 1947, d. 2 Feb 1948
- Comte Etienne de Liedekerke b. 16 Jan 1949
- Comte Bertrand de Liedekerke b. 18 Aug 1952
Comte Pierre de Liedekerke 
Comte Etienne de Liedekerke
Comte Bertrand de Liedekerke
Comtesse Isabelle Marie Georgine Antoinette Ghislaine d’Oultremont1 
- [S4047] Ludo Grouwels, “re: Liederkerke Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 27 October 2009. Hereinafter cited as “re: Liederkerke Family.”
Comte Rodolphe d’Oultremont 
Natalie Prinzessin von Croÿ 
Her married name became de Merode.
Children of Natalie Prinzessin von Croÿ and Comte Henri de Merode, Prince de Grimherge
- Comtesse Marie-Nathalie de Merode+ b. 1884, d. 1973
- Comtesse Henriette de Merode+ b. 1885, d. 1973
- Comte Charles de Merode b. 28 Nov 1887, d. 1977