Cosima Diamond: Who Is Nigella Lawson And John Diamond’s Daughter?

Cosima Diamond

Cosima Diamond is the daughter of Nigella Lucy Lawson and the late John Diamond, an English journalist and broadcaster. Cosima’s mother Nigella Lawson is an English food writer, television cook, food critic, author, and television presenter. She has written several cookery books and has sold more than 8 million cookery books worldwide to date.

Cosima Diamond: Bio Summary

Name Cosima Diamond
Age 29 years old as of 2023
Date of birth January 1994
Birthplace Hammersmith, London, United Kingdom
Famous as daughter of Nigella Lawson and John Diamond
Gender Female
Parents Nigella Lawson and John Diamond
Sibling Bruno Paul Diamond
Grandparents NigelLawson and Vanessa Salmon

Who Is Cosima Diamond, Nigella Lawson’s Daughter?

Cosima Thomasina Diamond was born in January 1994, in Hammersmith, London, United Kingdom. As of 2023, she is 29 years old. She is the daughter of Nigella Lawson and John Diamond (10 May 1953 – 2 March 2001). Her mother is an English food writer, television cook, food critic, author, and television presenter while her father was an English journalist and broadcaster.

Cosima Diamond’s middle name, Thomasina, was the name of her mother Nigella’s sister who died from breast cancer. Cosima has a brother called Bruno Paul Diamond. Her parents Nigella Lawson and John Diamond married in Venice in 1992 after meeting in 1986, when they were both writing for The Sunday Times. They were married until John died in 2001.

Cosima Diamond is the grandchild of Nigel Lawson, Baron Lawson of Blaby (1932–2023), a business and finance journalist who later became a Conservative MP and Chancellor of the Exchequer in Margaret Thatcher’s government, and Vanessa Salmon (1936–1985), a socialite and the heiress to the J. Lyons and Co. fortune.

Cosima’s stepfather became businessman and art collector Charles Saatchi, after her mother Nigella Lawson married Charles in September 2003. Nigella and Charles’ marriage fell apart after a scandal over the publication of pictures showing Charles clutching Nigella by the throat during an argument at a London restaurant.

ALSO READ: Bruno Paul Diamond: Facts About Nigella Lawson and John Diamond’s Son

Cosima’s stepfather Charles announced his divorce from her mother Nigella in early July, stating that he had “clearly been a disappointment to Nigella during the last year or so” and the couple had “become estranged and drifted apart”. Per the court papers, Nigella was the one who filed for the divorce, citing ongoing unreasonable behavior.

On 31 July 2013, their divorce was finalized. Nigella has mentioned that her daughter Cosima Diamond helped her to deal with her split with Charles Saatchi. However, Cosima Diamond has avoided sharing her details with the public so much is unknown. Her mother Nigella does her best to keep her children’s lives private.

“I’m very protective of my children because they don’t want attention, it’s not their thing and they didn’t choose this life,” Nigella said. “In many ways I don’t feel like I chose it either, but I guess that’s what happens if you go on TV.”

What Happened To Cosima Diamond’s Father?

John Diamond and Nigella Lawson

Cosima Diamond’s father John Diamond died on 2 March 2001, at age 47, in Westminster, London, England. He was diagnosed with cancer and, despite treatment, he did not survive. After being diagnosed with throat cancer in 1997, he wrote about it in his weekly column at The Times, and in two books, one published posthumously.

ALSO READ: Amanda Sudano: Who Is Donna Summer And Bruce Sudano’s Daughter?

John wrote in his bestselling book, C: Because Cowards Get Cancer Too, first published in 1998: “I despise the set of warlike metaphors that so many apply to cancer. My antipathy has nothing to do with pacifism, and everything to do with a hatred for the sort of morality which says that only those who fight hard against their cancer survive it, or deserve to survive it – the corollary being that those who lose the fight deserved to do so.”

C: Because Cowards Get Cancer Too. was adapted into a play by Victoria Coren Mitchell called A Lump In My Throat, which was itself later adapted for television. Bandolier reviewed and recommended Diamond’s book C: Because Cowards Get Cancer Too… John Diamond’s wife Nigella Lawson was heartbroken by his death. Among John’s last messages to Nigella was:

“How proud I am of you and what you have become. The great thing about us is that we have made us who we are.” Celebrating the 20th anniversary of the release of her first cookbook, How To Eat, Nigella Lawson remembered her late husband, John Diamond. Nigella shared a picture of herself and John at the launch party of the book in 1998 on Twitter.

She wrote: “This time 20 years ago, I was at the launch party for my first book, How To Eat. Looking at this photo makes me happy, but also very sad. I wish I could be in John’s arms now.”

ALSO READ: Mitchell Moranis: All You Need To Know About The Comedian

Nigella shared a recipe for her apple and walnut crumble, one of John’s favorites. She wrote: “I’ve chosen this in particular as it was a real favourite of my husband John’s. And How To Eat would never have existed without his urging and encouragement in the first place.”

Fact Check

We strive for accuracy and fairness. If you see something that doesn't look right and needs corrections, Kindly contact us!

Ruth Kai Botchway

Ruth Kai Botchway is a Senior Editor at She is a graduate of All Stars Media College (2021) with a Diploma in Journalism and Media Studies. With more than two years experience in Journalism, she has served as an intern at Accra FM and worked with Green TV and Ashiaman TV. She worked as a Maritime Journalist/ influencer, producing Port and Maritime agenda initially aired on Ashiaman TV. You can reach her via email:

Leave a Reply