Jedediah Mannis is the full-time executive director of the Shelter Island Fund, a non-profit organization that specializes in the protection of open space in Massachusetts using limited development as a preservation tool. Prior to heading Shelter Island, he practiced real estate law in Boston, Massachusetts. He donates his legal expertise to homeless men and women in Boston under the auspices of Ecclesia Ministries, an outdoor church for homeless people led by the Rev. Deborah Little, an Episcopal priest.
Mannis attended Yale (1966), Yale Law School (1969), and is currently a student at the Harvard Divinity School. He edited (with Galen Wilson) a book of civil war letters, Bound to be a Soldier: the Letters of James T. Miller (Knoxville: University of Tennessee, 2001), and is working on a book about Joseph Tuckerman.
Jed and his wife Joyce live in Winchester, Massachusetts, where he has been actively involved in municipal affairs, most recently as the chair of the town's Conservation Commission.