Here are two Lethbridge family deaths which I have not seen reported here. I do not know whether they are noted inthe most recent editions of Debrett's.
June Lethbridge Fog passed away peacefully in her home in Beaufort, South Carolina, on February 13.
Source: Legacy.com
PLATT--Graham Lusk, of Laurel Hollow, NY and Siletz, OR died on January 25th, 2016.
Graham Platt married Ann Lethbridge in Cold Spring Harbor, NY where they resided for 52 years. They moved in 2005 to Oregon and celebrated 63rd years together prior to Ann's death.
Graham is preceded in death by parents Collier and Louise Platt, wife Ann Lethbridge Platt and brother, Henry B. Platt. Graham is survived by his children Christina May Nelson, Graham Leghe Platt and Gordon Lethbridge Platt of Siletz, OR, Huntington, NY, and Charleston, SC, by his brother Thomas C. Platt of Bradford, CT, seven grandchildren and seven great-grandchildren.
Published in The New York Times on Feb. 14, 2016
Duncan John Leghe Lethbridge, of the Baronets (15 Dec 1898-26 Mar 1962); m.17 Jun 1922 Mrs Phyllis Muriel Anderson, née Chappell (d.3 May 1971)
1.Jacqueline Auriol Phyllis Leghe (19 Apr 1923- apparently d. before 2000)
2.June Florence (10 Jun 1926-13 Feb 2013); m.1944 Mario Fog
3.Ann (Feb 1930- predeceased husband ); m.11 Aug 1951 Graham Lusk Platt (d.25 Jan 2016)