Canadian Premier Lunches With Churchill - Left to Right-Mr. Jean Paul St. Laurent: Mrs. Hugh O'Donnell (son and daughter of the Canadian Premier); Sir Winston Churchill; Lady Churchill; and Mr. Louis St. Laurent. The Canadian Prime Minister is in London on a world tour to meet leaders in the search for an approach to peace. British Prime Minister Sir Winston Churchill with his guests, Canadian Prime Minister Mr. Louis St. Laurent and members of his family, at 10, Downing Street, London, to-day (Saturday). February 06, 1954. (Photo by Reuterphoto).