Ida Rentoul Outhwaite, also known as Ida Sherbourne Rentoul and Ida Sherbourne Outhwaite (9 June 1888 – 25 June 1960), was an Australian illustrator of children’s books. Her work mostly depicted fairies.
Outhwaite’s first illustration was published by New Idea magazine in 1904 when she was just 15 years of age – it accompanied a story written by her older sister, Anne Rattray Rentoul. In the years that followed, the sisters collaborated on a number of stories. Following her marriage to Grenbry Outhwaite in 1909, she also collaborated with her husband – most notably for The Enchanted Forest (1921), The Little Fairy Sister (1923) and Fairyland (1926). In a number of cases, her children – Robert, Anne, Wendy and William – served as models for her illustrations. She inspired a number of artists including Edith Alsop, Ethel Spowers and Ethel Jackson Morris. Reference: Wikipedia