Ivo of Chartres

Ivo (Yves) (born about 1040; died 1117) was bishop of Chartres from 1090-1117 and an important ecclesiastical figure and canon lawyer during the Investiture Crisis.

Ivo studied first in Paris and then at the Abbey of Bec in Normandy under Lanfranc where he would have met Anselm (like Lanfranc a future archbishop of Canterbury).

As bishop of Chartres and a canonist he opposed King Philip I's repudiation of his wife Bertha of Holland in order to marry Bertrade of Anjou in 1092. Ivo was briefly imprisoned for his opposition.

Ivo prepared two extensive canonical works, a Decretum and the Panormia (around 1094).