Christmas - New Catholic Encyclopedia (3)

7. Rome
At Rome the earliest evidence is in the Philocalian Calendar (P.L., XIII, 675; it can be seen as a whole in J. Strzygowski, Kalenderbilder des Chron. von Jahre 354, Berlin, 1888), compiled in 354, which contains three important entries. In the civil calendar 25 December is marked "Natalis Invicti".

In the "Depositio Martyrum" a list of Roman or early and universally venerated martyrs, under 25 December is found "VIII kal. ian. natus Christus in Betleem Iudeæ". On "VIII kal. mart." (22 February) is also mentioned St. Peter's Chair. 

In the list of consuls are four anomalous ecclesiastical entries: the birth and death days of Christ, the entry into Rome, and martyrdom of Saints Peter and Paul. The significant entry is "Chr. Cæsare et Paulo sat. XIII. hoc. cons. Dns. ihs. XPC natus est VIII Kal. ian. d. ven. luna XV," i.e. during the consulship of (Augustus) Cæsar and Paulus Our Lord Jesus Christ was born on the eighth before the calends of January (25 December), a Friday, the fourteenth day of the moon. The details clash with tradition and possibility. The epact, here XIII, is normally XI; the year is A.U.C. 754, a date first suggested two centuries later; in no year between 751 and 754 could 25 December fall on a Friday; tradition is constant in placing Christ's birth on Wednesday. Moreover the date given for Christ's death (duobus Geminis coss., i.e. A.D. 29) leaves Him only twenty eight, and one-quarter years of life. Apart from this, these entries in a consul list are manifest interpolations. 

But are not the two entries in the "Depositio Martyrum" also such? Were the day of Christ's birth in the flesh alone there found, it might stand as heading the year of martyrs' spiritual natales; but 22 February is there wholly out of place. Here, as in the consularfasti, popular feasts were later inserted for convenience' sake. The civil calendar alone was not added to, as it was useless after the abandonment of pagan festivals. So, even if the "Depositio Martyrum" dates, as is probable, from 336, it is not clear that the calendar contains evidence earlier than Philocalus himself, i.e. 354, unless indeed pre-existing popular celebration must be assumed to render possible this official recognition. 

St. Ambrose (de virg., iii, 1 in P.L., XVI, 219) preserves the sermon preached by Pope Liberius I at St. Peter's, when, on Natalis Christi, Ambrose' sister, Marcellina, took the veil. This pope reigned from May, 352 until 366, except during his years of exile, 355-357. If Marcellina became a nun only after the canonical age of twenty-five, and if Ambrose was born only in 340, it is perhaps likelier that the event occurred after 357. Though the sermon abounds in references appropriate to the Epiphany (the marriage at Cana, the multiplication of loaves, etc.), these seem due (Kellner, op. cit., p. 109) to sequence of thought, and do not fix the sermon to 6 January, a feast unknown in Rome till much later. Usener, indeed, argues (p. 272) that Liberius preached it on that day in 353, instituting the Nativity feast in the December of the same year; but Philocalus warrants our supposing that if preceded his pontificate by some time, though Duchesne's relegation of it to 243 (Bull. crit., 1890, 3, pp. 41 sqq.) may not commend itself to many. 

In the West the Council of Saragossa (380) still ignores 25 December (see can. xxi, 2). Pope Siricius, writing in 385 (P.L., XII, 1134) to Himerius in Spain, distinguishes the feasts of the Nativity and Apparition; but whether he refers to Roman or to Spanish use is not clear. 

Ammianus Marcellinus (XXI, ii) and Zonaras (Ann., XIII, 11) date a visit of Julian the Apostate to a church at Vienne in Gaul on Epiphany and Nativity respectively. Unless there were two visits, Vienne in A.D. 361 combined the feasts, though on what day is still doubtful. 

By the time of Jerome and Augustine, the December feast is established, though the latter (Epp., II, liv, 12, in P.L., XXXIII, 200) omits it from a list of first-class festivals. 

From the fourth century every Western calendar assigns it to 25 December. 

At Rome, then, the Nativity was celebrated on 25 December before 354; in the East, at Constantinople, not before 379, unless with Erbes, and against Gregory, we recognize it there in 330. 

Hence, almost universally has it been concluded that the new date reached the East from Rome by way of the Bosphorus during the great anti-Arian revival, and by means of the orthodox champions. 

De Santi (L'Orig. delle Fest. Nat., in Civiltæ Cattolica, 1907), following Erbes, argues that Rome took over the Eastern Epiphany, now with a definite Nativity colouring, and, with as increasing number of Eastern Churches, placed it on 25 December; later, both East and West divided their feast, leaving Ephiphany on 6 January, and Nativity on 25 December, respectively, and placing Christmas on 25 December and Epiphany on 6 January. The earlier hypothesis still seems preferable.


Quoted from New Catholic Encyclopedia (formatting added by me)
Copyright © 2009 by Kevin Knight. Dedicated to the Immaculate Heart of Mary.