She filled the vacancy left by
F. M. Powicke at QUB from 1916 to 1919, before returning to Oxford to take a position as a history tutor at
Somerville College. She became a Fellow in 1922, and the Vice-Principal in 1933. Her first publication was a paper on the Irish parliament during the reign of
Edward II, which was read to the
Royal Historical Society in December 1925. Her first book,
The medieval city, followed in 1926. Around this time she started her research into
Richard II, from which she produced the article "The Lancastrian faction and the wonderful parliament", read at the International Historical Congress in Oslo in 1928. Working with
Vivian Hunter Galbraith, Clarke published an edition of the
Dieulacres Chronicle in 1930 on the subject of the deposition of Richard II. Clarke was developing an interest in
iconography at this time, attracting high praise for her article on the
Wilton diptych in 1931, whilst she was studying Irish
high crosses. She partnered with
Noël Denholm-Young to work on an edition of the
Kirkstall Chronicle, and a paper on "Forfeitures and treason in 1388". During this period she started a study of the "Modus tenendi parliamentum", which is considered her most important work. It was published posthumously under the title
Medieval representation and consent in 1936. Clarke continued to work after a diagnosis of cancer, dividing her time between Oxford and periods of rest in Carnmoney. Her last article was "The origin of impeachment" in 1934. She didn't, however, live to produce, as intended, the volume on the 14th century for the Oxford history of England. Clarke died in Carnmoney on 17 November 1935. ==References==