...hnston was the eldest son of General Albert Sidney Johnston and Henrietta Preston, of Kentucky, through whom Colonel Johnston was related to the late Randall L. Gibson. Josiah Stoddard Johnston, of Natchitoches , United States Senator from this State, was an uncle of Colonel Johnston, being the elder half-brother of General Albert Sidney Johnston, who was a son of Dr. John Johnston, of Salisbury, Conn., and ...