Wilson was born in
Kendal, in the
English Lake District, on 5 March 1899. He was the eldest son of civil engineer Norman Foster Wilson (1869–1948) and Henrietta Gwendolen Meryon, née Harris (b. 1876). His younger brothers were
Paul Wilson (1908–1980), who was later a mechanical engineer and life peer, and
Edward Wilson (1906–1977), who was later a Spanish scholar. Wilson first went to school in
Windermere, where he was the youngest of five boys called 'Wilson', so was known as Wilson 'Quintus'. in France and Germany in 1918 and 1919. After the end of the
war, Wilson went to
McGill University, Montreal, Canada, to study for a degree in mining engineering and geology. In the McGill yearbook for 1924, Wilson identified his hobbies as "Tea, beer and mountains"; his love of mountains extended to some first ascents in the
Purcell Mountains of British Columbia. and his interest in structural geology next took him to the University of Wisconsin-Madison in the United States to study for a master's degree in geology. He worked with geologists
Charles Leith and W.J. Mead, and learned new skills in identifying the 'way up' of ancient sedimentary rocks. As a student, Gilbert became the first president of the Imperial College mountaineering club in 1929, and in 1930 led a group from the club across the
Eiger and the
Mönch in a day. == Career ==