Born in Le Havre, France to Joseph-Sévère Deneuve and Antoinette-Jeanne Deneuve (née Schenardi),[2][3] she debuted at the Odéon Theatre in 1918 at the age of seven. Primarily a stage actress, she remained there for 28 years, holding the post of "leading lady". Her daughter Catherine chose to use her maiden name, Deneuve, as her stage name. Simonot is Renée's stage name, which she took from an opera singer and family friend.[4]
She had her first daughter, Daniele, out of wedlock on 27 October 1936 with actor Aimé Clariond.[5][6][7] Simonot told Le Point magazine in 2013: "Mr. Clariond was not my husband. He was married, not divorced and separated from his wife for a long time. The only happiness he gave me is a child. For the rest, he was charming, but we could not count on him."[8]
While dubbing for MGM, she met Maurice Dorléac and they married in 1940. The couple had three daughters: Françoise (1942–1967), Catherine (born 22 October 1943) and Sylvie (born 14 December 1946).[9]
Simonot had been a widow since 1979 and lived in Paris. In an interview conducted a few months before her 102nd birthday in 2013, she said: "My old age is not sad. I am lucky to be very surrounded. There is not a day where I don't get a phone call or a visit from my children and grandchildren."[8]
In 2019, ahead of her 108th birthday, daughter Catherine told Gala: "It's pretty amazing, it comes from her genes. My sisters and I are holding her. She has been in a home for two or three years. At the same time it's a little scary, it still seems very far in life. I am all the more surprised by her longevity that she is not sick."[10]
Simonot died in Paris in July 2021 at the age of 109.[11][12]