- Home: Beaver, Pa.
- Occupation: Homemaker.
- Born: 1784 Washington Co, Pa.
- Died: 15 July, 1865 Beaver, Pa.
- Spouse: James Lafferty
- Marriage Date:
- Father: John Underhill b. 1737 Cecil Co. Md. d. bef 17 May, 1821 Washington Co. Pa.
- Mother: Mary
- Wm. Finley Lafferty
- Susan Lafferty b. 6 April, 1818 Washington Co. Pa. Married Geo. May.
- John Lafferty b. Washington Co. Pa. married Margaret May.
- Mary A. (Polly) Lafferty b. 1822 Beaver Co. Pa. married James May.
- Jane (June?) Lafferty b. 1826 Beaver Co. Pa. married Chas. Grove.
- Sarah Lafferty b. Abt. 1828, married Amon Doutt. b. 1816.
- Eliza Lafferty b. 1830 Beaver Co. Pa. d. 1902 married William Barklet Marlin.
- Stones in Old Beaver, Pennsylvania cemetery read by Milton Lafferty in 1953.
- Abstracts of Washington County, Pa. Willbooks 1-5 recompiled by Bob and Mary Closson, by permission of the Citizens Library, Washington, Pa.
- Underhill Genealogy Volume VIII Chapter 19, Compiled and edited 2002, by Carl J. Underhill.