Brenda Chamberlain was born at Bangor in 1912. In 1931 she went to train as a painter at the Royal Academy Schools in London and five years later, after marrying the artist-craftsman John Petts, settled in Caernarfonshire. During the Second World War she worked with her husband on the production of the Caseg Broadsheets. In 1947 she went to live on Bardsey (Ynys Enlli) where she remained until 1961. After six years on the Greek island of Ydra, she returned to Bangor; it was there, depressed and with financial problems, she died from an overdose of sleeping tablets in 1971.