Page "Increase Sumner" Paragraph 15

Sumner married on 30 September 1779 to Elizabeth Hyslop, daughter of William Hyslop.

Upon his father-in-law's death, Sumner inherited a considerable property which allowed him to maintain a dignified lifestyle during his public service.

The couple had three children ; his son William H. Sumner is well known for his efforts to develop what is now East Boston and for whom the Sumner Tunnel is named.