Question: Which British aristocrat and politician born in 1945 served as the Chairman of the Council of King's College London before Christopher Geidt?
Context: Jeffery was born in 1891 and educated at Strand School, Wilson's School and at King's College London.  In 1909 he qualified as a teacher at the London Day Training College and graduated from University College London in 1911.  From 1912 to 1921 Jeffery served as Assistant Lecturer in Applied Mathematics at University College, London.  He was a research student and assistant of L. N. G. Filon.  In 1921 he became University Reader in Mathematics at University College.  In 1922 he was appointed Professor of Mathematics at King's College London.  In 1924 he returned to University College as Astor Professor of Pure Mathematics (upon the retirement of M. J. M. Hill in 1923). George William Lyttelton, 4th Baron Lyttelton, {'1': ", '2': ", '3': ", '4': "} (31 March 1817 – 19 April 1876) was a British aristocrat and Conservative politician from the Lyttelton family.  He was chairman of the Canterbury Association, which encouraged British settlers to move to New Zealand. Dewan Farid Gazi (1924 – 19 November 2010) was a Bangladeshi politician born in Devpara, Nabiganj Upazila, Sylhet.  He was elected as Member of Parliament for the Habiganj-1 (Nabigonanj-Bahuball) constituency in 1996, 2001 and 2008, representing the Awami League, of which he was an Advisory Council member.  He served as chairman of the Parliamentary Standing Committee on the Ministry of Primary and Mass Education. Thomas Aitchison Denman, 2nd Baron Denman (30 July 1805 – 9 August 1894) was a British aristocrat and politician.  He was born in London, the son of Thomas Denman and the former Theodosia Anne Vevers.  His father was made Attorney General in 1830, and in 1834 became Lord Chief Justice and was raised to the peerage as Baron Denman.  His grandfather was the obstetrician Dr Thomas Denman, and his brothers George and Joseph were a High Court judge and admiral, respectively. Christopher Edward Dennistoun Shaw MBChB, MD, FRACP, FRCP (Hon), FMedSci, FANA (born 1960) is Professor of Neurology and Neurogenetics at the Institute of Psychiatry, Psychology and Neuroscience, King's College London.  He is also Head of the Department of Basic and Clinical Neuroscience, Director of the Maurice Wohl Clinical Neuroscience Institute at King's College London and an Honorary Consultant Neurologist and Neurogeneticist at King's College Hospital.  His major research interest is in the genetic, molecular and cellular basis of motor neuron diseases such as amyotrophic lateral sclerosis (ALS). Arthur Charles Valerian Wellesley, 9th Duke of Wellington, (born 19 August 1945) is a British aristocrat and politician.  He has served as Conservative Party Member of the European Parliament (1984–1989) for Surrey West and currently sits as a hereditary peer in the House of Lords since 2015. Peter Heather (born 8 June 1960) is a historian of Late Antiquity and the Early Middle Ages, currently Professor of Medieval History at King's College London.  He has held appointments at University College London and Yale University and was Fellow and Tutor in Medieval History at Worcester College, Oxford until December 2007.  He joined the History Department of King's College London in January 2008.  Heather was born in Northern Ireland in 1960.  He was educated at Maidstone Grammar School and New College, Oxford (MA, DPhil). The Francis Crick Institute (formerly the UK Centre for Medical Research and Innovation) is a biomedical research centre in London, which opened in 2016.  The institute is a partnership between Cancer Research UK, Imperial College London, King's College London (KCL), the Medical Research Council, University College London (UCL) and the Wellcome Trust.  The institute is planned to have 1,500 staff, including 1,250 scientists, and an annual budget of over £100 million, making it the biggest single John Walgrave Halford Fremantle, 4th Baron Cottesloe, 5th Baron Fremantle, GBE, TD (2 March 1900 – 1994) was a British aristocrat and public official.  He served as the Chairman of the Arts Council of Great Britain and the South Bank Theatre Board. Sir Christopher Edward Wollaston MacKenzie Geidt {'1': ", '2': ", '3': ", '4': "} (born 17 August 1961) was the private secretary to Queen Elizabeth II from September 2007 to 2017.  As of July 2016, Geidt also serves as the Chairman of the Council of King's College London, succeeding the Duke of Wellington.
Answer: Duke of Wellington