HENRY ST. JOHN, 1ST VISCOUNT (1678-1751).-Statesman and philosopher, _s._ of Sir Henry St. J., _b._ at Battersea, and _ed._ at Eton and perhaps Oxf., was during his youth noted chiefly for dissipation, but entering Parliament in 1701 as a supporter of Harley, soon made himself a name by his eloquence and talent. He held office as War and Forei