Robert Gascoyne-Cecil, 3rd Marquess of Salisbury prime minister of his lifetime. Attlee immediately replied: "Salisbury". The 6th Marquess of Salisbury commissioned Andrew Roberts to write Salisbury's authorised biography, which was published in 1999. After the Bering Sea Arbitration, Canadian Prime Minister Sir John Sparrow David Thompson said of Lord Salisbury's acceptance of the Arbitration Treaty that it was "one of the worst acts of what I regard as a very stupid and worthless life". The British phrase 'Bob's your uncle' is thought to have derived from Robert Cecil's appointment of his nephew, Arthur Balfour, as Chief Secretary for Ireland. Fort Salisbury (now Harare) was named in
Deputy Prime Minister of the United Kingdom and succeeded Winston Churchill's first premiership after their coalition broke up but only after a two-month interval when Attlee was not a member of the government. Anthony Eden succeeded Churchill after his second premiership, not because he had been Deputy Prime Minister, but because he had long been seen as Churchill's heir apparent and natural successor. The intermittent existence of a Deputy Prime Minister has been on occasion so informal that there have been a number of occasions on which dispute has arisen as to whether or not the title has actually been conferred. The position of Deputy Prime Minister