LOS ANGELES ¨C Diaries and a ring tracing the love affair between ¡°Gone with the Wind¡± star Vivien Leigh and Laurence Olivier are going up for auction in London next month, providing a glimpse into one of Hollywood¡¯s most notorious relationships.

¡°Told Leigh,¡± wrote the British actress on June 10, 1937, recording the day she informed her husband, Leigh Holman, about the affair. ¡°Left with Larry,¡± is the hasty entry six days later.

The diaries, which carry an estimated auction value of ?2,000-?3,000 ($2,587-$3,880), form part of Leigh¡¯s personal collection of jewelry, photos and paintings that is to be auctioned in London on Sept. 26, Sotheby¡¯s said on Wednesday.

Leigh also made notes about her screen tests for ¡°Gone with the Wind¡± and the day in January 1939 when she finally started filming. She went on to win an Oscar for playing petulant Southern belle Scarlett O¡¯Hara in the American Civil War classic.

Leigh and Olivier began their affair around 1936 when both were married to other people, according to Olivier¡¯s previously published love letters.

Because of the scandal of adultery and divorce, they married in secret in California in August 1940 at a low-key ceremony. A silver goblet gift from Katharine Hepburn, one of only four guests recorded at the wedding, is included in the auction.

A ring, inscribed with the words ¡°Laurence Olivier Vivien Leigh Eternally¡± is expected to sell for up to ?600 ($776).

Leigh and Olivier remained married for 20 years before divorcing in 1960. Leigh died in 1967 and Olivier died in 1989.

Other auction highlights include Olivier¡¯s annotated working copy of ¡°Hamlet¡± from his 1948 film, a set of Leigh¡¯s monogrammed luggage and a first edition of Ian Fleming¡¯s first James Bond novel ¡°Casino Royale,¡± valued at up to ?9,000 ($11,640).

The collection is being sold following the death of Leigh¡¯s only child, Suzanne Farrington, in 2015.