Lillias Margitson Rider Haggard was the younger daughter of the famous traveller and adventure novelist Sir Henry Rider Haggard. She was educated at home, and later attended St. Felix School in Southwold, Suffolk.
She never married. In 1919, Miss Haggard was awarded an MBE from King George V in recognition of her valuable volunteer hospital work during World War I. She then devoted her time to writing, producing Norfolk Life (1943) in conjunction with Henry Williamson, and three of her own individual works: Norfolk Notebook (1947), Country Scrapbook (1950), and The Cloak that I Left (1951), a biography of her father. Miss Haggard also edited two works, I Walked By Night (1935) and The Rabbit Skin Cap (1939).
