About Keith Sinjohn Joseph, Sir
Keith Sinjohn Joseph, Baron Joseph, Bt, CH, PC (17 January 1918 – 10 December 1994), was a British barrister and politician. A member of the Conservative Party, he served in the Cabinet under three Prime Ministers (Harold Macmillan, Edward Heath and Margaret Thatcher), and is widely regarded to have been the "power behind the throne" in the creation of what came to be known as "Thatcherism". He was known for most of his political life as Sir Keith Joseph, 2nd Baronet.
Joseph was the son of a wealthy and influential Jewish family. His father, Samuel Joseph, an active political kingmaker, headed the vast family construction and development-finance company, Bovis, and was Lord Mayor of London in 1942–43. At the end of his term he was created a baronet.
On the death of his father on 4 October 1944, 26-year-old Keith inherited the baronetcy.