Plan of St Gall
c. 819-826
Held by Abbey Library of St Gall, Cod. Sang. 1092read here
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The Plan of St Gall is a drawing of a whole Benedictine monastery on one composite sheet of parchment, about 113 by 78 cm. It shows a church and cloister, an abbot's house, a school, guest houses, an infirmary, workshops, a brewery and animal pens, with some 333 short Latin notes naming each part. A dedication letter addresses Gozbert. By the Wikipedia count the layout would have housed about 110 monks, 115 lay visitors and 150 workers. The monastery was never built from it.
Where it happens

- Reichenau The island abbey where the Plan was drawn and where its two scribes have been placed.12
- St Gallen The abbey the Plan was made for, and the library where it has been kept ever since.12
- Aachen Site of the synods of 816 and 817 that, in one theory, led the court to issue a model monastery plan.2
Through time
- 816The first of the Aachen synods on Benedictine reform, which one theory ties to an original plan.2
- 820The Plan is drawn at Reichenau, dated 819 or around 827 to 830 by e-codices and 820 to 830 by Wikipedia.12
- 1199Around the end of the 12th century a Life of St Martin is written on the back at St Gall.1
- 1979Horn and Born publish The Plan of St Gall and argue it copies a court original.2
Who is in it, and behind it
Gozbert patron
Abbot of St Gall from 816 to 836, the person the dedication letter addresses and the abbot who decided to build a new church in the 820s.2
Reginbert scribe
The librarian who, with a younger Reichenau brother, wrote the Latin annotations on the Plan.12
Heito subject
A Reichenau abbot under whom the Plan may have been made, the other candidate being Erlebald.1
Erlebald subject
A Reichenau abbot named in the e-codices description as the alternative date and patron for the Plan's making.1
Saint Gall subject
The hermit who founded the monastery; the planned church was meant to hold his relics.2
Louis the Pious subject
His court is named in one theory as the source of an original that the St Gall Plan copies.2
What it is about
A monastery that is self-sufficient
The Plan puts church, school, infirmary, workshops, farm buildings and guest quarters in one enclosure so the monks need not look outside it.2
Original or copy
Horn and Born saw a copy of a model drawn at the imperial court; Jacobsen, Stachura and Nees argue it is an original made at Reichenau.2
Drawn but never built
No monastery was raised to this layout, so it records an intention, not a building.2
Pages worth stopping at
How it came to be here
The sheet was drawn in the early ninth century, in the 820s on the usual dating, by scribes tied to Reichenau Abbey for Gozbert, abbot of St Gall. Scholars disagree on whether it is an original or a copy of an imperial model issued after the Aachen synods of 816 and 817. It stayed in the St Gall library. Around the end of the 12th century the blank back was used for a Life of St Martin, and the sheet was folded into a booklet, so it survives as Cod. Sang. 1092.
Sources
- e-codices IIIF manifest and description, Stiftsbibliothek St. Gallen, Cod. Sang. 1092
- Wikipedia: Plan of Saint Gall
Images: e-codices - Virtual Manuscript Library of Switzerland. CC BY-NC 4.0.
Also from Abbey Library of St Gall
- Abrogans - Vocabularius (Keronis) et Aliac. 790Cod. Sang. 911read here
- Folchart Psalter872-883Cod. Sang. 23read here
- Cantatoriumc. 922-925Cod. Sang. 359read here
- Irish Evangelary from St. Gall (Quatuor evangelia)c. 750Cod. Sang. 51read here
- St. Gall Nibelung manuscript B (Nibelungenlied, Klage, Parzival, Willehalm)c. 1260Cod. Sang. 857read here
- Reise nach BataviaGeorg Franz MüllerCod. Sang. 1311catalogue record
- Liber BenedictionumEkkehard IV1100Cod. Sang. 393catalogue record
- Folchard PsalterFolchardus870Cod. Sang. 23catalogue record