 The abbey of Missenden was founded c.1133, by William de Missenden, the lord of Missenden manor.Two of the abbey's foundation charters (those issued by King Henry I, and by Alexander, Bishop of Lincoln) state there were originally seven canons, who came to Missenden from "the church of St. Mary 'de Bosco (or de Nemore) de pago Terresino".This church - thought to have been in Ruisseauville, France - was a daughter house of Arrouaise Abbey, also in France.