Ida Rentoul Outhwaite, also known as Ida Sherbourne Rentoul and Ida Sherbourne Outhwaite, was an Australian illustrator of children's books. Her work mostly depicted fairies.
Outhwaite worked predominantly with pen and ink, and watercolour. Her first illustration was published by New Idea magazine when she was just 15 years of age - it accompanied a story written by her older sister. In the years that followed, the sisters collaborated on a number of stories. Following her marriage, she also collaborated with her husband Grenbry Outhwaite- most notably for The Enchanted Forest (1921), The Little Fairy Sister (1923) and Fairyland (1926). In a number of cases, her children served as models for her illustrations.
(source: wikipedia)