Possible Clues:

• One of Queen Victoria's prime ministers
• P.M. before Gladstone
• Benjamin ........ 19th century English P.M.
• I lead, sir to old English P.M.
• Democrat given support of Middle Eastern prime minister, in the past
• Daughter of Middle Eastern country's PM
• PM, bought Suez Canal
• Scandalous diaries about Liberal prime minister
• 'When I want to read a novel, I write one' he said
• Democrat and countryman meeting prime minister