Ivo of Chartres

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Saint Ivo of Chartres (Yves) (c. 1040 – 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). About 1080 he became, at the desire of his bishop, prior of the canons of St-Quentin at Beauvais. He was appointed bishop of Chartres in 1090, having succeeded Geoffroy of Chartres, and was strongly opposed to simony during his rule.

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) of which some of his ideas were incorporated into the Concordat of Worms in 1122. He was an extensive letter writer

The saint's feast is kept, since 1570, on 20 May; it is not known when he was canonized.

This article incorporates text from the public-domain Catholic Encyclopedia.