Yet in the midst of all these things poverty and simplicity were dear to him, and with his own hand he illuminated many books.

He took divers Lay Brothers to dwell with him, for he saw with the eye of charity that they would earn the reward of eternal life by faithfully cleaving to their holy labours, and living the common life under obedience.

Some of these he received as Donates, others he invested with the habit of Converts.
During the years that he was Prior he invested fourteen Clerks, whose names, with the days of their investiture, are written hereafter.
In the year 1408, on the Feast of St.Michael the Archangel, was invested Brother Nicholas Creyenschot, a native of the town of Kampen, a youth in years but upright in character.
In the year 1410, on the Feast of All Saints, two Brothers were invested together, namely, Wermbold, a priest of Kampen and kinsman to John of Ummen, and Gerard Ae of Utrecht.
In the year 1411, on the Vigil of the Nativity, three Brothers were invested together, namely, John the son of Gerard, John Bowman, and Gerard son of Wolter, a Convert; all these came from Zwolle.

In the year 1413, on the Feast of the Visitation of the Blessed Virgin, was invested Brother John of Lent, a town one mile from Zwolle.

In the year 1418, on the Vigil of the Nativity, three Brothers were invested together, namely, Rudolph of Oetmersen in Twenthe, Otto Lyman of Goch in Geldria, and Henry the son of James of Zwolle.
In the year 1421, on the Vigil of the Nativity, two Brothers were invested: namely, Henry, son of William, of Deventer, and Deric Veneman of Zwolle.
In the year 1423, on Easter Eve, two Converts were invested, namely, Gerard ten Mollen of Zwolle, and Gerard Hombolt of Utrecht.
In the year of the Lord 1424, on the Feast of the Annunciation of the Blessed Virgin Mary, these three Brothers were invested: John Lap of the town of Neerden in Holland, Christian Anversteghe of Campen, and Helmic Braem of Herderwijck in the State of Geldria..