Rosemary Edna Sinclair AO (née Fenton; born 17 November 1936) is an Australian activist and beauty pageant titleholder.
Her father, Stanley Fenton, worked as a radio operator at the Civil Aviation Department on the island.
When her mother died in 1952, she returned to Lord Howe Island to look after her father and two younger siblings, brother Stan and sister Robyn.
As she lived on the island keeping house for her family, she stitched her own clothes on the basis of a catalog she had obtained from Sydney.
[2] Sinclair took up the environmental cause of her birthplace, the Lord Howe Island, in 1982, when it was listed as an UNESCO World Heritage Site.
[3] In 1967, she worked in the Prime Minister's Department and dealt with public relations and facilitated the Montreal Expo.
[1] Sinclair was awarded the Centenary Medal in 2001 for "service to children, especially child abuse and neglect".