Judith Durham, OAM (born Judith Mavis Cock on July 3, 1943, in Melbourne, Victoria, Australia) is a jazz singer who became the lead vocalist for the Australian popular folk music group The Seekers in 1963. She left the group in mid 1968 to pursue her solo career. In 1993, Durham began to make sporadic recordings and performances with The Seekers, continuing into the 2000s.
from judithdurham.com :
She is a committed vegetarian and has eaten no meat, chicken, fish, seafood or eggs since 1968 [that would appear to make her a lacto-vegetarian, not vegan as frequently listed]. Judith advocates a non-smoking, environmentally-friendly, alcohol-free and cruelty-free lifestyle.