Marshall Arnott Sisson

Marshall Arnott Sisson RA (14 February 1897 – 26 January 1978) was a British architect, active in 1928–70. Although his earliest buildings were modernist, after around 1935 he used only traditional styles and became known for his restoration work. He was educated at Leighton Park, the Quaker school at Reading, Berkshire. After working in Gloucester, he studied under Albert Richardson and James Burford at the Bartlett School of Architecture in London and the British School at Rome (1924). He researched Jerash's Roman architecture in the Middle East in 1926 and spent time in John Russell Pope's practice in New York in 1927. (1933–34), described as an early example of the use of monolithic reinforced concrete in England.

From around 1935, Sisson embraced traditional architectural styles, starting with a neo-Georgian public library for the town of Colchester (1937). and converted buildings into Queen's Lane Quadrangle for The Queen's College, Oxford (1967–9).

Sisson was surveyor to the Royal Academy from 1947 to 1965, master of the Architectural School, and treasurer from 1965 to 1970. He was elected as a Royal Academician on 26 April 1963. In 1949, he published a book, Country Cottages.