As regular readers will know, I have been interested in the so-called Master of the Murano Gradual for several years, despite knowing very little about Italian illumination. My interest in locating the surviving examples of his work perhaps go back to about 2014, when I first started to get interested in the 1838 Ottley sale (e.g. here), which included several. From 2016 I began to pass relevant images and bits of information such as auction-catalogue references to Stephanie Azzarello, who was doing her PhD on the artist and his manuscripts, and to Bryan Keene, who was also interested in the artist, as I had no intention of doing anything serious with the material myself. They have now collaborated on two articles published in the last few years:
Bryan C. Keene and Stephanie Azzarello, ‘Uno splendido enigma: Il Maestro del Graduale di Murano’, Alumina, 64, 2019, 14–21
Stephanie Azzarello and Bryan C. Keene, ‘Splendors of the Serenissima in a Digital Age: The Master of the Murano Gradual Reconsidered’, Manuscript Studies: A Journal of the Schoenberg Institute for Manuscript Studies, 6.2 (2021), 223–67 
The second of these appeared very recently, and as it includes the most extensive list of the cuttings from the Murano Gradual, with their provenances, it has prompted me to sort through my miscellaneous notes, and I intend to blog a series of observations and thoughts, with a few corrections, additions, and questions, in the hope that they will also contribute to future studies.
One "correction" (if I am not myself mistaken) concerns the iconography of a cutting now at the Musée Cluny in Paris, shown above.
It was one of two cuttings bequeathed to the Museum in 1843 by Alexandre Du Sommerard (1779–1842) , archaeologist and art collector [Wikipedia]. Aside from the cuttings in the Ottley sale in 1838, these are the cuttings with the earliest known post-medieval provenance; it would be interesting to know where, when, and from whom he acquired them.
The two cuttings were included in the first catalogue of the Museum in 1847 , prepared by its Curator, Edmond Du Sommerard (Alexandre's son), as nos. 800 and 801:
|NYC, Morgan Library, MS M.1129 [Source]|
EDIT, 20 Feb. 2022
Re-reading the post above, I realise that I make the assumption that the reader knows that there were two feasts of St Michael, but perhaps this needs explaining. The feast of the Apparition of St Michael was on 8 May, and was usually less important than his 29 September feast, which commemorates the dedication in the 4th century of the basilica of San Michele on a hill near Rome. Curiously, it is only the feast of the Apparition that gets a historiated initial in the Camaldolese Gradual at the V&A, and it is illustrated with Michael defeating the dragon (Revelation 12:7-9):
 Azzarello, S. (2021). Reassembling the Sacred: The Murano Master and the Illuminated Choir Books of Camaldolese House of San Mattia di Murano (Doctoral thesis). https://doi.org/10.17863/CAM.77059. I have not had the opportunity to read this yet, as it is embargoed until September, but for the purposes of this blog I assume that the more recent publication in Manuscript Studies represents Stephanie and Bryan's most up-to-date opinions.
 Azzarello and Keene record his dates as (1779–1832) [sic], but all other resources seem to agree he died in 1842, which makes more sense for a bequest received in 1843.
 Catalogue et description des objets d'art de l'Antiquité du Moyen âge et de la Renaissance exposés au Musée [des Thermes et de l'hôtel de Cluny], ed. by Edmond Du Sommerard (Paris, 1847), p. 114.
 Fabrizio Lollini, in Dizionario biografico dei miniatori italiani: secoli IX-XVI, ed. by Milvia Bollati (Milan, 2004), p. 699; the identification is endorsed by Stephanie Azzarello, ‘Iconoclasm and Anti-Semitic Imagery in a Fifteenth-Century Venetian Choir Book’, Ikon, 11 (2018), 47–56 [PDF here].
 They describe it (p. 259) as "Initial B: The Holy House of Loreto (Feast on 10 December)".
 This last comment may need revision after I have made a more extensive search, but the 10 December feast seems to be absent from the earlier Camaldolese manuscripts described by Mirella Levi D’Ancona, The Choir Books of Santa Maria Degli Angeli in Florence (2 vols, Florence, 1993-94), and also from both the later printed Camaldolese Missal (Venice, 1503) and Breviary (Venice, 1514).
Update, 20 Feb. 2022: The 10 December feast is also absent from the late 14th-century Camaldolese Gradual at the V&A.