THE THIRD WHIG is the fifth chapter of my biography of Thomas Wharton, later 5th Baron, 1st Earl, and 1st Marquess of Wharton (and Tom Wharton, or Honest Tom to political England). The chapter picks up the story after Tom's marriage to a wealthy heiress and his election to Parliament as a Member from Wendover, and it endeavors to explain some of the political crises and grotesqueries that made Tom's subsequent political career and his famous political party possible. Since I am anxious to make Tom Wharton understandable to anyone who can read-not merely to experts on 17th-century politics-and since I am particularly concerned to explain him to his countrymen, who in general are at least as vague about their own history as Americans ...