Ambrosiani incipiunt adventum...: le liturgie ambrosiana e romana a confronto nel sermonario Ambr. A 12 sup.
| AEVUM - 2012 - 2
SUMMARY: In Milan two different liturgical rites have been practiced side by side in the late
Middle Ages: the peculiar Ambrosian liturgy and the Roman liturgy, followed in convents and
monasteries of regular orders inside the city. The MS Milano, Bibl. Ambrosiana, A 12 sup. is
an important witness of this situation. Written in Italy in the early 14th century, this MS was
later owned by the convent of S. Agostino in Cremona, Lombardy. In the 17th century, with a
faked bookplate, it was included in a collection of MSS (about a hundred) sold by a forger as
part of Petrarch’s library. It contains sermons mostly of Hugues de Saint-Cher OP, of Jean Bale
´trier OP, of Siboto OP and other authors. The sermons cover all the liturgical year and few
feasts of the sanctoral, following the Roman liturgy and kalendar. The unique feature of this
MS is a Kapitulare Epistularum and Evangeliorum for the temporale according to the Ambrosian
rite, appended at the end by one of its early users. This sort of index of the biblical passages
read during the Mass is concluded with comments on the differences between the
Ambrosian and the Roman kalendars and rites.