She was born Gladys Mary Baldwin, and married Wilson in 1940. It was generally assumed that she owed her subsequent success as a poet to her position as the prime minister's wife. Nevertheless, her name was at one time mentioned as a possibility for the next Poet Laureate.
Wilson was a lecturer in Economics at New College in 1937 and a lecturer in Economic History at University College from 1938 (and was a fellow of the latter college 1938–45).
Wilson was becoming known as a left-winger and joined Aneurin Bevan in resigning from the government in April 1951 in protest at the introduction of National Health Service (NHS) medical charges in order to meet the financial demands imposed on the budget by the Korean War.
Wilson won the case, and all royalties from the song (composed by Move leader Roy Wood) were assigned in perpetuity to a charity of Wilson's choosing.