| Last name | Underhill |
| First name | Isaac |
| Display name | Isaac Underhill |
| Birth place | |
| Gender | m |
| Affiliations | Society of Friends, New York Yearly Meeting of Friends. Indian Committee |
| Bio notes | Probably the Isaac Underhill, born in New York in 1732, who married Mary Cock at Westbury in 1754. Appointed to NYYM Indian Committee in 1796. Died at Westbury in 1817 at the age of 85. |
Reports of the Indian Committee to New York Yearly Meeting, 1795-1806