Betty Mona Desmond Ayers (née FitzGerald), known as Duffy Ayers was an English portrait painter. She trained at the Central School of Art.  She married Michael Rothenstein in 1938 and lived in Great Bardfield for fourteen years from 1941, bringing up two children Julian and Anne. In 1959 she married Eric Ayers, a designer and a director of Editions Alecto, and moved to London, where in the 1960s she re-commenced painting in oils and regularly exhibited at the Royal Academy. One of her oil portraits, "The Arrival" (1993) is in the North West Essex collection of the Fry Art Gallery . She also taught for many years on courses at the Women's Institute's Denman College.