Rosalind Margaret Clarissa Christie was born on 5 August, 1919 in her grandmother's home, Ashfield, Torquay.

At the time of Rosalind's birth, the manuscript of The Mysterious Affair At Styles, Christie's first novel, had been sent out to John Lane and was published a year later.

Deeply wounded, Agatha moved back into Ashfield (which had been her own childhood home), where she was visited by her husband, who confessed his affair with his secretary Nancy Neele.

Her parents divorced shortly thereafter[3] and in 1928, Archie Christie married Nancy Neele; their only child together, Archibald, was born in 1930.

In a 2014 interview with This Morning, Suchet stated:[10] "I never met Agatha, but the greatest compliment [...], she [Rosalind] actually said that famously her mother hated people playing Poirot.

Following Rosalind's death in 2004, her son Mathew Prichard inherited her shares of the Agatha Christie Limited as well as the Greenway Estate, which he sold to the National Trust.

[11][12] The seven-year-old Rosalind appears as a character in the 2018 British television drama, Agatha and the Truth of Murder.