Generale Mario Piroddi1 
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
Matteo Cordero di Montezemolo1
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
Sandra Monteleoni1
Her married name became Cordero di Montezemolo.1
Child of Sandra Monteleoni and Luca Cordero di Montezemolo
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
Guia Cordero di Montezemolo1
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
Ludovica Andreoni1
Her married name became Cordero di Montezemolo.1
Children of Ludovica Andreoni and Luca Cordero di Montezemolo
- Guia Cordero di Montezemolo1 b. 2001
- Maria Cordero di Montezemolo1 b. 2003
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
Maria Cordero di Montezemolo1
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
Mafalda Violante Giovanna Olga Maria Arrivabene Valenti Gonzaga1,2
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
- [S3182] Isabelle Maltais, “re: van Oranje-Nassau,” e-mail message to BENR, 6 June 2008. Hereinafter cited as “re: van Oranje-Nassau.”
Maddalena Smeralda brandolina Maria Arrivabene Valenti Gonzaga1,2
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
- [S3182] Isabelle Maltais, “re: van Oranje-Nassau,” e-mail message to BENR, 6 June 2008. Hereinafter cited as “re: van Oranje-Nassau.”
Leonardo Amedeo Moreschino Sai Maria Arrivabene Valenti Gonzaga1,2
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
- [S3182] Isabelle Maltais, “re: van Oranje-Nassau,” e-mail message to BENR, 6 June 2008. Hereinafter cited as “re: van Oranje-Nassau.”
Principe Don Fabrizio Ruffo di Calabria1 
He gained the title of 18° Conte Sinopoli in 1946.1 He gained the title of 14° Duca di Guardia Lombarda in 1946.1 He gained the title of 19° Marchese di Licodia in 1975.1 He gained the title of 14° Principe di Scilla in 1975.1 He gained the title of 12° Principe di Palazzolo in 1975.1
Children of Principe Don Fabrizio Ruffo di Calabria and Maria Elisabetta Vaciago
- Donna Imara Ruffo di Calabria+3 b. 7 Jul 1958
- Don Alessandro Ruffo di Calabria1 b. 4 Nov 1964
- [S1442] Anonymous, “re: von Opel Family,” e-mail message to British and European Nobility Register, 31 August 2005 to 16 December 2005. Hereinafter cited as “re: von Opel Family.”
- [S130] Wikipedia, online http;//www.wikipedia.org. Hereinafter cited as Wikipedia.
- [S3182] Isabelle Maltais, “re: van Oranje-Nassau,” e-mail message to BENR, 6 June 2008. Hereinafter cited as “re: van Oranje-Nassau.”
