Artist and teacher who studied at the Slade School of Fine Art, 1906–10, under Henry Tonks and Fred Brown, then at the Royal Academy Schools, 1910–14, Walter Sickert a notable teacher. She was married to the artist and teacher Clive Gardiner, her son being the writer Stephen Gardiner, who remembered that Sickert “regarded Lilian as his favourite pupil. He gave her one of his paintings, nude on bed, Camden Town period. Most of all, she admired the French Impressionists and Van Gogh and, of the Impressionists, Renoir was certainly an influence.” Lancaster taught at Eastbourne College of Art, 1916–21. She exhibited at the RA Summer Exhibition and NEAC, of which she was a member, receiving excellent reviews in newspapers and art periodicals.