Charles T. Jackson (1805-1880) was born and died in Massachusetts. He received his education at Harvard Medical School and also spent a number of years studying medicine and geology in Europe. He was very active in the Boston Society of Natural History, served as a surveyor, and was the state geologist for Rhode Island, New Hampshire, and Maine. While serving as the U.S. geologist for the Lake Superior region, he was fired for poor leadership. Jackson was involved in a number of priority disputes, often claiming first rights of discovery soon after someone else had done so, and only once was his claim proved valid. Nevertheless, he was an accomplished geologist, and his sister and her husband, Ralph Waldo Emerson, faithfully backed him in his disputes. Sadly, Jackson became mentally ill in his old age and died in an asylum.