They collected material and memories from her sons, residents and local historians.

The documentary is told through her own voice using an interview recorded in the 1960s found when her sons gave them “huge boxes full of photographs, family albums and letters”,

“She was twice a popular and well respected Lord Mayor of Oxford, a peace campaigner and the first woman chair of the Campaign for Nuclear Disarmament (CND),” Mr Baines said.

Mr Baines said the Labour councillor’s influence on bringing down the Cutteslowe Walls was also an important part of her legacy.

They were built in 1934, were over 6ft 6ins (2m) high and topped with lethal spikes.

They divided the city council’s Cutteslowe estate from private housing to the west that was developed by Clive Saxton of the Urban Housing Company.

Mr Saxton was afraid his housing would not sell if so-called “slum dwellers” were going to be neighbours, and the walls were built to separate them.