Thereafter the bishops of Namur held the abbacy "in commendam". In 1419 he was made abbot "in commendam" of Tre Fontane Abbey. Originally, commandries were benefices, particularly in the Church, held "in commendam". Even the abbey of St Denis was held in commendam by Hugh Capet. With the bishopric he held the living of Clifton Camville "in commendam". Nithard himself later became lay abbot of St Riquier "in commendam". In 1764 he was made abbot "in commendam" of the rich abbey of Molesme. He became abbot of Walden "in commendam" at an unknown date. In later centuries this abbey fell into the hands of abbots "in commendam". He held Inchaffray Abbey from 1514 and Scone Abbey from 1518 "in commendam". Pope Callixtus III, in 1455, gave the abbey in commendam to a cardinal. In 1442 the abbey was placed "in commendam". It was under the command of the commendam Altshausen. In both countries, the practice of nominating abbacies "in commendam" had become widespread. After he became archbishop, he continued to hold the treasurership "in commendam".