Insular script is a writing style that began in Ireland during the medieval period. It spread to England and other parts of Europe because of Irish Christianity. Irish missionaries carried the script to the continent, where they helped establish monasteries, such as Bobbio. Monasteries like Fulda, which were influenced by English missionaries, also used the script. Insular script is linked to Insular art, and many examples of this art are found in illuminated manuscripts. It had a major impact on modern Gaelic writing styles and handwriting.

The term "Insular script" describes a group of different writing styles used for various purposes. The most formal style was called the Insular half-uncial (or "Insular majuscule") and was used for important documents and religious texts. A version of the full uncial, known as "English uncial," was used in some English locations. Less formal styles followed, including "set minuscule," "cursive minuscule," and "current minuscule." These were used for non-religious texts, letters, accounting records, notes, and other types of written documents.

Origin

Scripts were created in Ireland around the 7th century and were used until the 19th century. Their most popular time was between 600 and 850. These scripts were connected to uncial and half-uncial scripts, which directly influenced them. The best example of Insular script is the majuscule Insular half-uncial, which is closely based on Continental half-uncial script.

Appearance

Texts in Insular script often have large starting letters surrounded by red ink dots. This feature is also found in other scripts from Ireland and England. After a large initial letter at the beginning of a paragraph or section, the following letters usually get smaller as they are written across a line or page until reaching the usual size. This gradual decrease in size is called a "diminuendo" effect and is a special feature of Insular script. It later influenced writing styles in Europe. Letters with parts that extend upward, such as b, d, h, and l, have triangular or wedge-shaped tops. The rounded parts of letters like b, d, p, and q are very wide. The script includes many connected letters and uses unique abbreviations, along with symbols borrowed from Tironian notes.

Insular script was introduced to England by the Hiberno-Scottish mission. Before this, uncial script had been brought to England by Augustine of Canterbury. The combination of these two scripts led to the development of the Insular script system. Within this system, the expert in ancient writing Julian Brown identified five levels of formality, with each level becoming less formal than the one before it.

Julian Brown also suggested two stages in the development of this script. The second stage was heavily influenced by Roman uncial examples and was created at Wearmouth-Jarrow. This stage is best seen in the Lindisfarne Gospels.

Usage

Insular script was used for Latin religious books and for all other types of books, including those written in local languages. Examples include the Book of Kells, the Cathach of St. Columba, the Ambrosiana Orosius, the Durham Gospel Fragment, the Book of Durrow, the Durham Gospels, the Echternach Gospels, the Lindisfarne Gospels, the Lichfield Gospels, the St. Gall Gospel Book, and the Book of Armagh.

Insular script helped create Carolingian minuscule, a writing style used in the scriptoria of the Carolingian empire.

In Ireland, Insular script was replaced around 850 by Late Insular script; in England, it was replaced by a form of Caroline minuscule.

The Tironian et, ⟨⁊⟩—a symbol similar to the ampersand ⟨&⟩—was widely used in the script. It meant "agus" (meaning "and" in Irish) and "ond" (meaning "and" in Old English). This symbol is sometimes still used in modern Gaelic typefaces based on Insular script.

Unicode

Unicode considers how letters from the Latin alphabet are shown in insular script as a font choice that does not require special coding. Only a few insular letters have specific codes because they are used by experts who study sounds. To display the full alphabet correctly, a proper font should be selected. To show the special characters, several fonts can be used. Three free fonts that support these characters are Junicode, Montagel, and Quivira. Gentium and Charis SIL support the character ⁊ and the letters with codes U+1ACx, U+A77x, U+A78x, and U+1D7x.

According to Michael Everson in the 2006 Unicode proposal:

To write text in a regular Gaelic font, only standard ASCII letters should be used. The font automatically makes the needed changes to display insular letters. The insular letters proposed here are intended only for specialists who need them for specific reasons.