Canon 4
We have decreed that this should be observed concerning the ordinations of clerics that no layman should be promoted to the clerical office, unless either by command of the King, or with the consent of the count (iudex). However, the sons of clerics, that is the sons, grandsons, and great-grandsons, who are bound to follow the order of their parents, shall be in the power and at the discretion of the bishops.
(trans. Hillgarth 1986: 100, changed by J. Szafranowski)