1. The
History of Manuscript Illumination
The earliest surviving illuminated
manuscripts date from the fifth century, but books and scrolls were already
decorated in the classical world. Papyrus rolls
were probably illustrated in ancient Egypt and Greece, and Varro and Martial,
for example, describe author portraits in Roman manuscripts. The great
rise of manuscript illumination, however, was triggered by the invention
of the "book", that is, the change from papyrus
rolls to codices
that consisted of bound parchment leaves. This change took place gradually
between the second and fourth centuries A.D. Book illumination remained
one of the most flourishing forms of art until the sixteenth century when
the luxuriously decorated, hand-written codices were gradually replaced
by the printed book.
2. The Artists
and the Works
In the early Middle Ages, most painters
in miniatures were monks - occasionally nuns, members of the secular clergy,
or even laymen - who worked in the scriptoria
of monasteries by the side of the scribes or scriptores, who were usually
monks themselves.

They executed large numbers of illuminated
manuscripts needed for liturgical services, theological studies, or private
devotion, as well as a innumerable other works that formed part of the
learning of the period, including secular books handed down by antiquity.
Although manuscripts continued to be written and decorated in monasteries
and friaries in the later Middle Ages and the Renaissance as well (especially
active were the Carthusians and the Brethren of the Common Life in fifteenth-century
Netherlands), in this period many illuminators were already specialized
lay craftsmen who worked in their workshops
with the help of assistants and apprentices. In fact, as early as the eleventh
and twelfth centuries professional laymen working for pay appeared, and
often lay artists were called into monasteries for a short period of time
necessary for the execution of the work. Most of the professional artists
of the late Middle Ages worked only in book illumination, but some others
were involved both in miniature and large scale painting such as frescos
and altarpieces. Illuminators usually belonged either to the guild of painters
or to guilds involved in the book trade (text writers, binders,
book sellers, etc.); this arrangement varied from town to town. Until the
late Middle Ages most illuminators remained anonymous. Although scribes
began signing their names as early as 586, when the famous Rabula Gospels
was signed by its scriptor, no signatures of illuminators survive before
the eighth or ninth centuries, from which period we possess two certain
signatures of illuminators. Even though the lack of artists' signatures
can partly be explained by the fact that in some cases the scribe and the
illuminator could have been one and the same person (as in the case of
the Lindisfarne Gospels written by Bishop Eadfrith in 716), illuminators'
signatures remain infrequent until the late medieval period. With the gradual
rise of the status of the artist from simple artisan to acknowledged artist,
illuminators also showed more self-awareness. Besides the increasing number
of signatures, self-representation was also becoming frequent from the
twelfth century on.

From the thirteenth century, the
growing number of surviving documents, mainly of legal nature (contracts,
tax rolls), provide additional information on lay artists. Illuminators
have been especially well-documented in towns where book production was
a major occupation. University towns such as Bologna, Paris, Oxford, Cambridge
played a very important role in this respect, being the main centers for
the production and trade of books. In the early phase of medieval book
painting, the training of illuminators took place in the monasteries by
personal instruction, although also some technical manuals were available
from the ninth century on. Later, as the number of lay artists increased,
the training was usually done by apprenticeship in the workshops,
according to the rules set down by the guild to which the illuminators
belonged. Illuminators often shared the execution of works. The various
stages of a single miniature were executed by different members of the
same workshop: the master was responsible for the most difficult and determining
parts of the job such as the layout of the composition, while apprentices
were entrusted with the more mechanical, time-consuming jobs that also
required less expertise, such as the preparation of the ground or the reinforcement
of the preliminary drawing in ink.
Sometimes the separate sheets of a yet unbound codex
were given out to different painters to decorate. In these cases, special
attention was paid to the overall harmonization of the work. The overall
unity of a book decoration was also of prime importance when an unfinished
project was completed later, by different artists: the original program
(often indicated by completed underdrawing)
was usually treated with respect and followed as closely as possible. A
famous fifteenth-century example is Jean Colombe's completion of the work
of the Limbourg brothers on the Très Riches Heures of the Duke of
Berry. Colombe kept and followed the original compositions, most probably
because he was ordered to do so by the owner of the famous Book of Hours.
The decoration of codices greatly varied in amount and complexity. The
simplest of designs was the border decoration or marginalia, although these
were sometimes quite intricate and included carefully worked out figures
of animals, monsters, and human characters
The initial letters of texts were
very frequently decorated, often with a scene, in which case they are called
historiated
initials.

The most ambitious decorations filled
either a quarter, a half or a full page. Because of their square format,
these miniatures often imitated large-scale painting. In many cases the
direct influence of monumental paintings or even woodcuts have been demonstrated
in miniatures. Illuminators also often copied other miniatures or borrowed
designs from pattern books.
Pattern books usually included
various studies from life and copies made from all sorts of works. They
were often handed down from one artist or workshop
to another. In the late Middle Ages some highly finished pattern books
may also have been used as advertisement, to show the artist's capabilities
to potential customers. Illuminated manuscripts were always widely circulated
and copied. Especially sumptuously decorated codices were given as diplomatic
or wedding gifts. Traveling scholars and monks carried books with them
and brought them to their home libraries. In the late Middle Ages some
single-leaf miniatures were created specifically for the art market, and
often for export. These decorated sheets were then inserted into already
bound codices
for decoration. As such practice hazarded the market positions of local
workshops, the guilds sometimes forced illuminators to mark their own work
with a stamp and forbade the import of single-leaf miniatures from elsewhere.
Such a decree was issued in Bruges in 1426.