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| name of feast | Adventus [first Sunday] |
| X-code | [XA21] (click here for the full office text) |
| [&] author of original | [&] attrib. to ?Robert le Pieux [Normandy], 11th c. |
| incipit | =MA1 pro fidei meritis |
| liturgical order of service | M=A9I |
| summary of poetic analysis | M=lle7s. [”] |
| approx. date from 1000 | 11th c. |
| basic edition (usually AH) | AH 17 #1 |
| general information | this is the same office as the one for general Sundays, Dominica Dies, plus one antiphon; see NGDMM "Antiphon"; CAO I #35, III #4383 |
| summary of original sources listed in AH | sources: 4, * 12~15th c., Spain |