Timbery was born on 14 February 1931 in the New South Wales town of
Port Kembla (now a suburb of
Wollongong) and was of Bidjigal Aboriginal heritage. Timbery began to create shellwork at a young age. She came from a long line of shellworkers including her great-grandmother,
Emma Timbery. Timbery and her sister, Rose, began to sell their shellwork in the 1940s.
ABC produced a documentary about her in 2007, titled
She Sells Sea Shells. She had eight children. == Work ==