It was built by Roger Bigod, and became the seat of the Earls of Norfolk and the Dukes of Norfolk.
References R. Allen Brown, "Framlingham Castle and Bigod 1154-1216", Proceedings of the Suffolk Institute of Archaeology, 25 (1950), 127-48, reprinted in his book Castles, Conquest and Charters
R. Allen Brown, "Framlingham Castle and Bigod 1154-1216", Proceedings of the Suffolk Institute of Archaeology, 25 (1950), 127-48, reprinted in his book Castles, Conquest and Charters