Camillo de Gregoria, Duca di Sorrentino 
He gained the title of Duca di Sorrentino.
- [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 Carolina Zileri, Contessa dal Verme degli Obbizi

She gained the title of Contessa dal Verme degli Obbizi.
- [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.”
Aldegonda Zileri, Contessa dal Verme degli Obbizi

She gained the title of Contessa dal Verme degli Obbizi.
- [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.”
Camilla Zileri, Contessa dal Verme degli Obbizi

She gained the title of Contessa dal Verme degli Obbizi. From 30 September 1926, her married name became Robson.
Children of Camilla Zileri, Contessa dal Verme degli Obbizi and William Thomas Robson
- Elvira Robson b. 1927
- Tommy Robson b. 1931, d. 1937
- Giorgio Robson b. 1935, d. 11 Sep 2007
- [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.”
William Thomas Robson
Children of William Thomas Robson and Camilla Zileri, Contessa dal Verme degli Obbizi
- Elvira Robson b. 1927
- Tommy Robson b. 1931, d. 1937
- Giorgio Robson b. 1935, d. 11 Sep 2007
- [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.”
Tommy Robson 
Giorgio Robson 
Elvira Robson
Her married name became Carisi.
Sergio Carisi
Conte Roberto Zileri 
Children of Conte Roberto Zileri and Donna Maria Gabriella Massimo
- Contessa Berica Isabella Zileri+ b. 25 Feb 1893, d. 12 May 1948
- Giulio Zileri, Conte dal Verme degli Obbizi+ b. 25 Nov 1895, d. 24 Jun 1930
- [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.”