It was untroubled by rebellion or by foreign invasions, so that the king won the honorable title of Rex Pacificus.
He then got himself crowned by St Boniface, a ceremony which was new to France and which gave the sovereign immense prestige; henceforth the king of the Franks called himself Gratia Dei rex Francorum.
Among Sir Isaac's writings is Rex platonicus, a description of the entertainment of James I.
Included in the collegium were also the rex sacrorum, the flamines, three assistant pontifices (minores), and the vestal virgins, who were all chosen by the pontifex maximus.
In the Visigothic and Lombard codes princeps is the equivalent of rex or imperator; and when, after the overthrow of the Lombard kingdom by the Franks, Arichis II.
At once the malcontents presented their demands in a document known popularly as the Articles of the Barons, more strictly as Capitula quae barones petunt et dominus rex concedit.
De balena vero sufficit, si rex habeat caput, et regina caudam.
He permitted free study of the Aristotelian writings, and issued (1234), through his chaplain, Raymond of Pennaforte, an important new compilation of decretals which he prescribed in the bull Rex pacificus should be the standard text-book in canon law at the universities of Bologna and Paris.
These were greater advantages than the exclusive patrician possession of the offices of interrex, rex sacrorum and the higher flamens.
In the same way the adoration of living human beings, the deification of living kings - whose title survives in our king or queen of the May, and in the rex nemorensis, the priest of Diana in the grove of Aricia - has been most fruitful in myths of divine beings.