Kemper, Jackson was born on December 24, 1789 in Pleasant Valley, New York, United States. Son of Daniel and Elizabeth (Marius) Kemper.
Graduate Columbia (valedictorian), 1809, honorary Doctor of Divinity, 1829. Honorary Doctor of Divinity, Oxford (England) University, 1868. Honorary Doctor of Laws Cambridge (England) University, 1868.
Ordained deacon Protestant Episcopal Church, 1811, priest, 1814. Elected 1st missionary bishop Protestant Episcopal Church with jurisdiction over N.W., 1835, also appointed bishop of Wisconsin, 1854. Founded Kemper College, Nashotah House, Racine College (all for training missionaries).
Established 7 dioceses, opened numerous schools and academics, established Episcopal Church in N.W. Attended Council of Bishops of Protestant Episcopal Church, England, 1868.
Married Jerusha Lyman, 1816. Married second, Ann Relf, 1821.