Mortet, Victor. “L’expertise de la cathédrale de Chartres en 1316.” Congrès archéologique
(Chartres) 67 (1900):309–29.
PIERRE DE LA CROIX
(Petrus de Cruce; fl. 1280–1310). Composer and music theorist. Pierre’s treatise
Tractatus de tonis deals with plainchant. The English theorist Robert de Handlo in his
Regule (1326) attributed a treatise on mensural theory to him, which has not survived.
Documents of the royal treasury indicate that a maître Pierre de la Croix d’Amiens
completed an hystoria of St. Louis in 1297, the year Louis IX was canonized. The sole
source for his plainchant treatise also described Pierre as being from Amiens. Jacques de
Liège commented in the seventh book of his Speculum musicae upon two of Pierre’s
motets, S’amours eust/Au renouveler du joli tans/Ecce and Aucun ont trouvé/Lonc tans
me sui tenu/Annuntiates, both of which appear at the beginning of the seventh fascicle of
the Montpellier codex. Petronian notation, characterized as the first modification of
Franconian mensural notation because it allowed as many as seven semibreves to be sung
in the time of a breve, has been viewed at times as merely ornamental and at others as an
evolutionary basis for the Ars Nova. Identification of Pierre de la Croix with the Petrus
Picardus to whom Jerome of Moravia attributed the Franconian treatise Ars motettorum is
doubtful, and there is no evidence that the anonymous Ars cantus mensurabilis secundum
Franconem is his lost treatise on mensural theory.
Sandra Pinegar
[See also: FRANCO OF COLOGNE; JACQUES DE LIÈGE; MOTET (13TH
CENTURY); MUSICAL NOTATION (12TH-15TH CENTURIES]
Lefferts, Peter M., ed. Robertus de Handlo, Regule and Johannes Hanboys, Summa. Lincoln:
University of Nebraska Press, 1991, pp. 17–20.
Pierre de La Croix. Petrus de Cruce Ambianensi, Tractatus de tonis, ed. Denis Harbinson. N.p.:
American Institute of Musicology, 1976.
Huglo, Michel. “De Francon de Cologne à Jacques de Liège.” Revue belge de musicologie 34–35
(1980–81):44–60.
Rokseth, Yvonne, ed. Polyphonies du XIIIe siècle: le manuscrit H 196 de la Faculté de Médecine
de Montpellier. Paris: Oiseau Lyre, 1933–39, Vol. 4, p. 79 n. 5.
PIERRE DE MONTREUIL
(d. 1267). Pierre de Montreuil is the most celebrated French master mason of the 13th
century. He has been credited with the construction of every major building in Paris
between 1230 and 1270, including the abbey of Saint-Denis and the Sainte-Chapelle.
Unquestionably the master mason of the refectory, begun in 1239, and the Virgin Chapel,
built from 1245, of the abbey of Saint-Germain-des-Prés, Pierre created an architecture
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