Glynis Johns: Glynis Johns. Actress: Mary Poppins. Glynis Johns was the daughter of actor Mervyn Johns. Best known for her light comedy roles and often playful flirtation, Glynis was born in South Africa while her parents were on tour there (her mother was a concert pianist) but was always proud of her Welsh roots and took delight in playing the female lead (opposite Richard Burton) in the classic Under Milk Wood (1971)....
