Montesquieu

We must observe that, fiefs having been chan­ged into Church pro­per­ties, and Church pro­per­ties having been chan­ged into fiefs, fiefs and Church pro­per­ties reci­pro­cally took on some­thing of the nature of the other. Thus Church pro­per­ties had the pri­vi­le­ges of fiefs, and fiefs had the pri­vi­le­ges of Church pro­per­ties : such were the hono­ri­fic rights in the chur­ches which came into being in those times.1

See capitularies, book V, art. 44, and edict of Pistres, year 869, art. 8–9, where we see the honorific rights of the established lords just as they are today.