McMillan, Gavin a Presbyterian minister, was born in Antrim County, Ireland, Feb. 6, 1787, and was brought to Charleston, S.C., in August of the same year. He began his education under Rev. John Kell, and pursued his classical studies under the care successively of John Orr, Rev. Thomas Donnelly, Rev. E. Newton, and Mr. Campbell; in 1817 he graduated with honor at the South Carolina College, S.C.; afterwards studied divinity in the Reformed Presbyterian Seminary in Philadelphia, Pa.; was licensed by the Reformed Philadelphia Presbytery in 1821, and in 1823 was ordained and installed pastor of Beech Woods Church, at Morning Sun, Ohio, where he labored for fifty years. In 1839 and 1861 he was moderator of the Synod. He died Jan. 25, 1867. Mr. McMillan was eminent as a scholar and theologian; clear and instructive as a preacher; wise and trustful as a counselor. See Wilson, Presb. Hist. Almanac, 1868, p. 390.