I was just browsing Wikipedia, and found this information in the “Pre-Tridentine Mass” article:
In 1223 Saint** Francis of Assisi instructed his friars to adopt the form that was in use at the Papal Court** (Rule, chapter 3). They adapted this missal further to the needs of their largely itinerant apostolate. Pope Gregory IX considered, but did not put into effect,** the idea of extending this missal, as revised by the Franciscans, to the whole Western Church**; and** in 1277 Pope Nicholas III ordered it to be accepted in all churches in the city of Rome**. Its use spread throughout Europe, especially after the invention of the printing press; but the editors introduced variations of their own choosing, some of them substantial.
Is this information accurate? If so, does anyone know the details of history? Did the Franciscans, in essence, help in that transformation of the old Roman Rite which reached its peak in 1570?
The Missal of 1570 (adopted at Trent) was a revision to the Roman Curia Missal dating from the 12th century.
THE MASS OF THE WESTERN RITES By the Right Reverend Dom Fernand Cabrol
CHAPTER X THE RITES DERIVED FROM THE ROMAN MASS FROM NINTH-SIXTEENTH CENTURIESThe Roman Curia, which until then had celebrated the same Offices as those of the Roman Basilicas, notably of that of the Lateran, which was the cathedral church of Rome, and considered the mother and mistress of all churches, separated itself from these at the beginning of the twelfth century, and** fixed its own Office for the Breviary**. The substance of this Breviary was actually that of the Lateran, but it differed on several points, and, above all, it was very much abridged. The same thing happened in the case of the Missal. The subsequent history of these books is rather curious. Innocent III (1198-1206) revised them. In 1223 St. Francis of Assisi ordained that the Franciscans should henceforth adopt the Roman Office; for hitherto they had simply followed the Office of whatever province they had chanced to find themselves in. This was a means of establishing amongst the Friars Minor that liturgical unity which had previously suffered a great deal. But the liturgy they adopted both for Mass and Office was neither that of the Lateran nor of the Roman Basilicas, but actually that of the Roman Curia, established at the beginning of the twelfth century. This fact was big with consequences for the future. The activity of the Franciscans at that time was prodigious; and in all the countries through which they passed as missionaries they established this use of the Missal and Breviary which they themselves followed; though they slightly modified it, especially in the case of the Franciscan Feasts. In 1277 Nicolas III ordered it to be used by the Roman Basilicas; Gregory IX, from the year 1240, **had thought of imposing it on the Universal Church; but that important duty devolved on St. Pius V (1566-1572). **In the sixteenth century the Council of Trent, having declared that the liturgical books required revision, confided the task to the Pope, who undertook a work at once difficult and complicated. In 1568 the correction of the Breviary was completed; in 1570, that of the Missal. Every church which could not prove a local use of at least two hundred years was obliged to adopt the Breviary and the Roman Missal.