He came to Mount St.Agnes to serve the Lord in the sixth year after the death of Master Gerard Groote, with the first Brothers that dwelt here, and with those very poor Lay folk, the disciples of Gerard, of whom I have written above.

He lived therefore in this place for sixty-six years, reckoning the years of his conversion from the beginning thereof to the year of his death inclusively, and Brother John Kempen, the first Prior of this House, invested him as a Convert on the Feast of St.Katharine the Virgin, in the year of the Lord 1401, he being the third of the Converts then invested.
In the same year, on the Octave of the Holy Trinity, and on the night of the Feast of the Saints Gervase and Protasius, died Brother Arnold, son of Conrad of Nussia, being twenty-six years of age.

He had been in the priesthood for one year, and for nearly fifteen days had been sick of a tertian fever, but God had pity on him that in a brief space he fulfilled many years, and by the swiftness of his course escaped the hazardous defilements of the world; now he had finished eight years in the Religious Life.
In the year of the Lord 1447, on the day before the Feast of St.Agnes the Virgin, two Clerks were invested, namely, Everard ter Huet of Zwolle and James Spenghe of Utrecht.
In the same year the Clerks at Alberghen, near Oldenzale, received the habit of Holy Religion in the Order of Canons Regular of St.Augustine, and they were invested on the day of the Finding of the Holy Cross.
CHAPTER XXV.
How Theodoric of Kleef, third Prior of the House on the Mount laid down his office, and was absolved therefrom.
In the year of the Lord 1447, that venerable Father, Theodoric of Kleef, third Prior of our House of Mount St.Agnes the Virgin, coming home from the General Chapter, called the Brothers together, and humbly sought to speak with them so that when the Visitors of the House came he might be absolved from his office of Prior.

For twenty-three years he had ruled the House with fatherly care, and he was weary with many labours.

He would have made this petition a year before, but that the urgency of divers concerns of the House had hindered him from so doing, and he pleaded the weakness of his age and that his senses were clouded.