Edgar David Cartwright was born on 21 October 1926 in Stoke Newington, London. His father, Edgar Athelstan Canynge Cartwright ran a detective agency, while his mother Lucienne Eugenie Taranson was a schoolteacher and pianist from France. The family moved to Worthing in Sussex when Cartwright was two and took over a hotel. After primary school he attended Worthing High School for Boys[2]
In 1944, he started his higher education at St John's College, Cambridge (BA in natural science and electronics) and in 1949, he enrolled King's College London (BSc; DSc).[3] After graduating in 1951, he started working at Department of Naval Construction. The following year, he married Anne-Marie Guerin, who he had met at his parents' hotel. The couple would go on to have four children, two daughters and two sons.[2]
Cartwright was made a Fellow of the Royal Society in 1984[4] He was also a Fellow of the Royal Astronomical Society and the American Geophysical Union. Cartwright died in West Sussex on 2 December 2015.[2]