The Four-Inch Course name was derived from regulations adopoted by a British private club which formerly owned what kind of company?
Four Inch Course The Four-Inch Course was a road-racing circuit first used for the 1908 Tourist Trophy Race for cars, held on public roads closed for racing by an Act of Tynwald (the parliament of the Isle of Man). The name of the course derives from the regulations for the 1908 Tourist Trophy adopted by the Royal Automobile Club, which limited the competitors' engines to a cylinder-diameter of four inches. The Four-Inch Course was adopted by the Auto-Cycle Club for the 1911 Isle of Man TT Races. The Four-Inch Course was subsequently known as the Snaefell Mountain Course or Mountain Course when used for motor-cycle racing.
Devonshire Club The Devonshire Club was a London gentlemen's club which was established in 1874 and was disbanded in 1976. Throughout its existence it was based at 50 St James's Street. The major Liberal club of the day was the Reform Club, but in the wake of the 1868 Reform Act's extension of the franchise, the waiting list for membership from the larger electorate grew to such an extent that a new club was formed to accommodate these new Liberal voters. The clubhouse was on the western side of St James's Street. The original intention was to call it the 'Junior Reform Club', along the model of the Junior Carlton Club formed in 1866, but complaints from the Reform Club's members led it to being named the Devonshire, in honour of its first chairman, the Duke of Devonshire, an aristocrat from a long line of Liberals.