Aug. 1784–22 Jan. 1848. Physician. Born in Prince William Co., Virginia. Son of Charles Modesitt and Francis Byrnes. Graduated from Prince William College, in Virginia. Married first Rebeccah Welton, 15 Nov. 1812, in Hardy Co., Virginia (later in West Virginia). Moved to Ohio, 1814. Moved to Indiana Territory, 1816, and was among early settlers of what became Terre Haute, Vigo Co., Indiana. Wife died, Feb. 1830. Married second Elizabeth Catharine Harris, 24 June 1833, in Vigo Co. Baptized into Church of Jesus Christ of Latter-day Saints, by 20 Dec. 1838. Buried in Terre Haute.