Cuno of Praeneste

Cuno of Praeneste (died 9 August 1122) was a German Cardinal and papal legate, an influential diplomatic figure of the early 12th century, active in France and Germany. He held numerous synods throughout Europe, and excommunicated the Emperor Henry V numerous times, in the struggle over the issue of lay investiture of ecclesiastical offices. He spent six years promoting the acceptance of Thurstan of York as archbishop by King Henry I of England, without making York subject to Canterbury. He was seriously considered for election to the papacy in 1119, which he refused.