1764-1847. MP for Winchester and confidant of the the first Duchess. Allied to the first Duke in politics and a Grenvillite MP. He was  trustee of their 1796 marriage settlement. 

• 1764: Born in Jamaica. He was son of Edward East the Duchess of Chandos's agent on the island and Amy Hall (married 1761).
• Education:

• 1776: Harrow
• 1781: Inner Temple
• 1782: Magdalen College, Oxford

• 1786: Married Jane Isabella Hankey (?-1844) on 23 December 
• 1792-96: MP for Great Bedwyn
• 1813-23: MP for Winchester (succeeding James Henry Leigh)
• 1813: Knighted
• 1823: Created a Baronet
• 1827: Takes control of first Duke's financial affairs
• Children: James Buller East and Anna Elizabeth East
• 1847: Died

Sources

Sack; Beckett; and others