Albert Thomas Matson, ‘Mat’ to his many friends, was born in Sipson, Middlesex in 1915. He was educated at Southall Grammar School before joining the Royal Army Medical Corps in 1939.1n 1944 he was seconded to the Colonial Service in Kenya as a Health Inspector. After serving in Kisii he was transferred to Nandi District in 1949, where he remained until his retirement fourteen years later.

His interest in Kenyan history arose from a request from Senior Chief Elija arap Chepkwony and his colleagues of the Nandi District Council that the history of their people should be written. Matson responded to their request by undertaking research into oral history in the course of his travels as a Health Inspector and by consulting and copying a great range of archival sources, official and personal, in East Africa and in Britain.