sentences:  Gilbert Pell served as representative in the Illinois legislature and was appointed United States envoy to Mexico in the 1850s.He was descended from Sir John Pell (1643-1702), Lord of Pelham Manor, New York, who was the son of English mathematician Dr. John Pell, and nephew and heir of early American settler and pioneer Thomas Pell.Eliza became estranged from her husband, and returned to England with their son Morris Birkbeck Pell.