They span many centuries throughout the Middle Ages.

The rubrics for the Liturgy are found in Ordines I, VII, IX-X, XV-XVII.

Those for Baptism are found in Ordines XI, XXII-XXIV and XXV.

Those for Ordination are found in Ordines XXXIV-XXXV, and XXXIX.

Those for Funerals are found in Ordo XLIV.

Finally, those Ordines that deal with the Dedications of Churches are found in Ordines XLI-XLIII.

The oldest Ordo is Ordo XI which is from around AD 650 and concerns Baptism. The most complete compilation available to the scholar was written by a Frenchman with the last name of Andrieu.

External links

• Catholic Encyclopedia article