Moody Kent was born at Kent's Island, Massachusetts, on April 22, 1779, the son of Joseph Kent and Jane Moody. He had multiple siblings, including Amos (1774-1824), Paul, Jane, and Sarah. After studying at the Dumner Academy in Newbury, Massachusetts, he attended Harvard University, graduating in 1801. Kent entered the legal profession, and he was admitted to the New Hampshire bar in 1804. He practiced law in Deerfield, New Hampshire (1804-1809) and Concord, New Hampshire (1809-1832) until his retirement in 1832. He then traveled around the northeast and settled in Pembroke, New Hampshire, where he resided and worked as a property manager from 1841-1865. A lifelong bachelor, Moody Kent died in Pittsfield, New Hampshire, on February 1, 1866.