Correspondence of Sir Lionel Pilkington, Member of Parliament for Horsham, Yorkshire from 1748-1768, who won his seat through the influence of Henry Ingram, 7th Viscount Irvine [or Irwin] of Temple Newsam, Yorkshire and of Hills Place, Horsham, Sussex. In this letter, Pilkington thanks Irwin for his election as MP for Horsham and recounts the circumstances of the election.