Both in Italy and France he was engaged in collecting materials for his great work, which occupied him about twenty-five years, L'Histoire des ordres monastiques, religieux, et militaires, et des congregations seculieres, de l'un et de l'autre sexe, qui ont ete etablies jusqu'd present, published in 8 volumes in 1714-1721.
C. Loyseau, in his Traite des seigneuries (3rd ed., 1610, p. 14), explains that there are two kinds of public seigneuries, that is, sovereign seigneurs, possessing summum imperium, and suzerains, " Les suzeraines sont celles qui ont puissance superieure mais non supreme."
In short, they took nothing from them but the ideas, the spirit, the life; they ` found' (ils ont trouve) all the rest " (p. 80).