The Missal of Cardinal Angelo Acciaiuoli

Bastiano di Niccolò, Matteo and Bartolomeo Torelli

Artists

The accounts do not specify the contributions of these artists, only the sums they were paid. Bastiano di Niccolò received most of the total – over 31 golden florins – suggesting that he may have been paid for the work of assistants as well as his own. Bartolomeo Torelli received 58 lire and Matteo Torelli over 47 lire. The involvement of Matteo Torelli and Bastiano di Niccolò must have been greater than the direct payments suggest. Matteo was renting a workshop from the Badia’s monks, while Bastiano di Niccolò was renting both his house and workshop from them. Between 1402 and 1405 they deducted from their rents sums that Acciaiuoli owed them for work on the Missal.

Bastiano di Niccolò and Bartolomeo Torelli are known from documents, but no other works by them seem to survive. Matteo Torelli is often considered the Missal’s main artist, but his corpus is still the subject of debate. Manuscripts once associated with the young Matteo and now reattributed to the Master of the Breslauer Epiphany (named after a page with an Adoration of the Magi, formerly in Bernard Breslauer’s collection) show strong affinities with figures and facial types painted by two of the Missal’s artists who were responsible for most of the pages with major illuminations (Hands A and B).

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1
Detail of the Cardinal’s portrait under magnification (7.5x), exemplifying the delicate faces with long eye lashes, fine modelling and complex layering of flesh tones that characterise the work of Hand A.
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2
Detail of Christ’s face under magnification (25x), showing the delicate modelling of the flesh tones, with subtle brown shadows and pink highlights over a white base layer. The facial features are defined with reddish brown lines and the eyes are outlined in black. XRF analysis (below) allows the identification of lead white (Pb), vermilion (mercury, Hg) and an earth pigment (iron, Fe) in this area.
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3
Detail of the angel’s mantle under magnification (7.5x). FORS analysis (below) reveals the presence of lead white (absorption band at 1448 nm) and a red dye, probably extracted from insects (absorption maxima at 523 and 565 nm), in the pink portion of the mantle. Additional absorption bands at 1730, 1760, 2310 and 2352 nm are due to the presence of egg yolk used as a paint binder.
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4
Detail of the green folds of Christ’s mantle under magnification (60x). The blue particles which can be clearly distinguished were identified as azurite by FORS analysis. The XRF spectrum (below) reveals the additional presence of lead-tin yellow (Pb, Sn) as the yellow component of this green mixture.

The elegant figures with delicate faces are representative of Hand A. The complex modelling and careful blending of the flesh tones demonstrate his remarkable technical skill (hotspots 1 and 2). He used egg yolk as a binder to paint the figures, both in the miniature and in the border (hotspot 3), and favoured mixtures of azurite with yellow pigments to obtain green hues (hotspot 4).