Sarah Jacqueline Tyacke, CB, FSA, FRHistS, FRGS (née Jeacock; born 29 September 1945) is an English historian of cartography and travel and a former librarian and archivist.
Tyacke was born Sarah Jeacock in Chelmsford, Essex, on 29 September 1945: her father, grandfather and great-grandfather had all been school headmasters.
[1] She was educated at Chelmsford County High School for Girls, before studying history at Bedford College, University of London, and graduating in 1968.
[3] She also oversaw numerous technical initiatives, including the launch of the 1901 census website as a pay-per-view service in 2002 and development of strategies for preserving born-digital records.
[2] On 25 November 2010, she was awarded the President's Medal by the British Academy "for her service to historical records, in particular through her work as head of the National Archives".
From 2009 to 2011 Tyacke chaired the Mount Everest Foundation, a non-profit-making humanitarian and development body active in Nepal.