Son of Caleb Haight (1778) and Keturah Horton (1777) was an early convert to the Church of Jesus Christ of Latter-day Saints (Mormon) and as a pioneer he moved his family West with the Saints to Utah. Brigham Young sent Isaac on a three-year mission to England where part of his duties included studying iron making. Upon his return Isaac was made president of the "Iron Mission" in Cedar City, Utah. He served as the town's first mayor and as an important church leader. His involvement in the "Mountain Meadows Massacre" and his practice of polygamy forced him to flee Federal officers and become an exile late in life. While a fugitive, he assumed the name Horton (his mother's maiden surname) and freighted material for the construction of the St. George temple. He died estranged from family and friends.