He also began a programme of building and renovation in his diocese, turning Lyon into a centre of learning.
[3] He received his primary education at Freising Cathedral, where one of his colleague was Arn, future bishop of Salzburg.
After an illness, Leidrad convalesced for a year at church of Saint Martin at Tours, where Alcuin was abbot.
In a letter he wrote to the emperor years later, between 809 and 812, he recalled how he had been appointed "to remedy the sins of carelessness in the past" that had left the church of Lyon "destitute ... with regard to its buildings as well as its liturgical offices".
Accompanied by Theodulf of Orléans, he visited Avignon, Nîmes, Maguelonne, Agde, Béziers, Narbonne and Carcassonne.
[3] In 799, he was appointed along with Archbishop Nebridius of Narbonne [fr] and Abbot Benedict of Aniane to investigate the charge against Bishop Felix of Urgell that he was an adoptionist.
[11] According to his aforementioned report to Charlemagne, he established a schools of cantors and lectors, ensuring that the latter were capable of biblical exegesis.
[12] Leidrad renovated churches, including Lyon Cathedral, and restored farm buildings.
[16] At Charlemagne's request in 812, he also composed a theological treatise, Liber de sacramento baptismi ("Book on the Sacrament of Baptism").