Her parents were Jessie Norwood (born Arnold) and John Templeton Braden who dealt in stationary.

It was Braden who introduced her to Phyllis Barron and Dorothy Larcher and Marx became an apprentice handblock textile printer.

[2] In 1925, Braden joined Bernard Leach's pottery in St. Ives after Sir William Rothenstein recommended her as "a genius".

[3] In 1925, Pleydell-Bouverie started her first pottery with a wood-fired kiln in the grounds of her family estate at Coleshill.

[4] She had to join a retirement home in 1994 and visitors were surprised to find that she had a collection of unknown finished pots.