Cosgrove was born and raised in Liverpool, the second eldest of six children. His father, a bank manager and devout Roman Catholic, was very active in his upbringing, sending him to the Jesuit school he had himself attended,
St Francis Xavier's College, Liverpool. He won an open scholarship to read geography at
St Catherine's College, Oxford. He graduated in 1969, going on to complete an MA in geography at the
University of Toronto. After marrying his first wife in New York, he returned to the
University of Oxford to do a doctorate with a "head full of new ideas", but with little academic support, and left to take a job "up the hill" as Lecturer at
Oxford Polytechnic in 1972. Meanwhile, his thesis on Venetian landscape was submitted for a
Bachelor of Letters (BLitt) degree, only to be successfully resubmitted for a
Doctor of Philosophy (DPhil) degree in 1976 on the insistence of its examiner,
David Lowenthal, who considered it an outstanding piece of work. In 1970, Cosgrove married Isobel Thubron; they had two daughters and later divorced. Cosgrove remained at
Oxford Polytechnic until 1980, rising to be principal lecturer. He then moved to
Loughborough University becoming reader in 1988, before transferring to
Royal Holloway, University of London in 1994 as professor, ultimately serving as dean of the graduate school. In 1989, he married Carmen Mills, and they had a son. Cosgrove was appointed
Alexander von Humboldt Professor of Geography at the
University of California, Los Angeles (UCLA) in 2000, remaining a visiting professor at
Royal Holloway, University of London until his death. Cosgrove was about to become chairman of the geography department at UCLA, when he was diagnosed with stomach cancer in 2006. He had been named Getty Distinguished Scholar for 2008-9, and had planned to work on geography and art in Los Angeles. Cosgrove died of cancer at his home
West Hollywood, California, on 21 March 2008, at the age of 59. ==Research==