John Donaldson, Baron Donaldson of Lymington war in 1945. He served in the military government of Schleswig-Holstein, and was demobbed as a lieutenant-colonel aged 25. He married Dorothy Mary Warwick (later known as Dame Mary Donaldson), in 1945, having met her at Middlesex Hospital where she was working as a nurse. She later became the first woman to be a Member of the City of London Court of Common Council, the first female Alderman, the first female Sheriff and, finally, in 1983, the first female Lord Mayor of London. Together, they had two daughters and a son; his wife predeceased him in October 2003. Donaldson was
Simon Donaldson the academic year 1983–84 at the Institute for Advanced Study in Princeton, and returned to Oxford as Wallis Professor of Mathematics in 1985. After spending one year visiting Stanford University, he moved to Imperial College London in 1998. In 2014, he joined the Simons Center for Geometry and Physics at Stony Brook University in New York, United States. Donaldson received the Junior Whitehead Prize from the London Mathematical Society in 1985 and in the following year he was elected a Fellow of the Royal Society and, also in 1986, he received a Fields Medal. He was awarded the 1994 Crafoord