Soon after arriving in Sydney in 1970, Margaret Muir commenced studying to become a Cytotechnologist. In 1980, with her husband and two children, she moved to Perth where she pursued her career in cancer detection. Although she was diagnosed with breast cancer in 1989, she continued working in this field.
In 1994, after being made redundant, she undertook correspondence courses in freelance journalism and children's writing. Also, at that time, she moved to a small property outside Perth, to breed goats. For several years she was also editor of a rural newsletter.
Combining her interest in writing and livestock, she wrote numerous feature articles about goats. She also wrote poetry and children's stories for which she received a few commendations and minor prizes. In 2002, having started her first novel, she embarked on a BA (Writing) at Edith Cowan University in Perth. Following graduation, she completed her novel Sea Dust which was accepted for publication.
Apart from writing, her main interest is travelling, particularly on tall ships. Her appetite was whetted after sailing several times on the Sail Training Ship Leeuwin, an 1850s style square-rigged ship, out of Fremantle. In 2004, she sailed across the Atlantic on a clipper. Later that year she visited South America and Antarctica.
Much of her inspiration stems from her memories of Yorkshire and her love of sailing tall ships.