The ''Pontificale Romano-Germanicum'' ("Roman-Germanic pontifical"), also known as the ''PRG'', is a set of
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
documents of
Catholic
The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...
liturgical
Liturgy is the customary public ritual of worship performed by a religious group. As a religious phenomenon, liturgy represents a communal response to and participation in the sacred through activities reflecting praise, thanksgiving, remembra ...
practice compiled in
Saint Alban's Abbey, Mainz, under the reign of
William (archbishop of Mainz), in the mid-10th century, and an influential work in the establishment of the
Catholic Church in Europe.
It was in wide circulation during the Middle Ages and was used as the basis for the modern
Roman Pontifical. It contains 258 ''Ordines'' describing