A successful author, Lady Soames wrote an acclaimed biography of her mother, Clementine Churchill, in 1979. She offered insights into the Churchill family to various biographers, prominently including Sir Martin Gilbert, who became the authorised biographer of Sir Winston Churchill after the death of Churchill's son, Randolph, in 1968. Additionally, she published a book of letters between Sir Winston and Lady Churchill, editing the letters as well as providing bridging material that placed the letters in personal, family, and historical context.
One of her more notable public appearances came on 29 April 2002 when she dined with the Queen at Buckingham Palace as part of the Golden Jubilee celebrations, alongside Prime Minister Tony Blair, and the four surviving former prime ministers at the time, as well as several relatives of other deceased prime ministers.
Six months after her death, on 17 December 2014, Sotheby's London auctioned 255 items out of her collection on behalf of her heirs, including paintings by and memorabilia attached to her father, Winston S. Churchill. According to Sotheby's, the sale "realised an outstanding total of £15,441,822, well above pre-sale expectations of £3.6-5.5 million."
The Rt. Hon. Sir Nicholas Soames (12 February 1948). He married Catherine N. Weatherall on 4 June 1981 and they were divorced in 1988. They have one son. He married Serena Mary Smith on 21 December 1993. They have two children, a son and a daughter.
The Hon. Emma Mary Soames (6 September 1949). She married James MacManus on 4 July 1981 and they were divorced in 1989.
The Hon. Jeremy Bernard Soames (25 May 1952). He married Susanna Keith in 1978. They have three children.
The Hon. Charlotte Clementine Soames (17 July 1954). She married Richard Hambro in 1973 and they were divorced in 1982. They have one daughter. She married William Peel, 3rd Earl Peel on 15 April 1989. They have one daughter.
Gules, a chevron Or, between in chief two hammers of the last and in base two wing Argent; impaled with quarterly, first and fourth Sable a Lion rampant Argent, overall on a quarter of the last a cross Gules; second and third grandquarterly 1st and 4th Argent 2nd and 3rd Gules a fret Or overall a bend Sable charged with three escallops Argent; in chief an escutcheon Argent a cross Gules thereon an inescutcheon Azure three fleurs-de-lys Or.
Dexter: A winged lion Argent gorged Gules. Sinister: a falcon Or holding a cord Gules and Argent.
FIEL PERO DESDICHADO Spanish: Faithful but Unfortunate
^"The Queen [...] today held a Chapter of the Most Noble Order of the Garter [...] Her Majesty invested the Baroness Soames with the Insignia of a Lady Companion of the Most Noble Order of the Garter." The Court Circular 13 June 2005.