Frances Evelyn "Daisy" Greville, Countess of Warwick (née Maynard; 10 December 1861 – 26 July 1938) was a campaigning socialist who supported many schemes to aid the less well off in education, housing, employment and pay. She established colleges for the education of women in agriculture and market gardening, first in Reading then in Studley. She established a needlework school and employment scheme in Essex as well as using her ancestral homes to host events and schemes for the benefit of her tenants and workers. She was a long-term confidant or mistress to the Prince of Wales, who later became King Edward VII.
She was the inspiration behind the popular music hall song "Daisy, Daisy".
Born at 27 Berkeley Square, London, she was the elder of two daughters of Colonel Charles Maynard and his second wife, Blanche FitzRoy. Blanche FitzRoy was descended from Charles II through his mistress Nell Gwyn via her mother, Jane Beauclerm, and Henry Fitzroy and the Dukes of Grafton via her grandfather Rev. Henry Fitzroy. Blanche was only 18 when she gave birth to Frances, whilst Charles was aged 50. Frances would always be known as Daisy. The Maynards' younger daughter and Daisy's sister was named after her mother and was always known as Blanchie. Charles Maynard was the eldest son and heir apparent of Henry Maynard, 3rd Viscount Maynard. As Charles died three months before the Viscount, it was Daisy who inherited the Maynard estates in 1865, including her ancestral home of Easton Lodge in Little Easton, Essex. Two years after her father's death, her mother married 33-year-old Lord Rosslyn, a favourite courtier of Queen Victoria. They had five children, Daisy's half-sisters, including the noted Sybil Fane, Countess of Westmorland; Millicent Leveson-Gower, Duchess of Sutherland; and Lady Angela Forbes.