The Return of a Lost Tradition

A Newly Typeset Dominican Breviary from the Humbert Codex

For centuries, the Dominican Rite has stood as one of the most venerable and distinctive liturgical traditions in the Western Church.
Now, for the first time in over six decades, a complete, single-volume Latin Totum Dominican Breviary returns to print. Based directly on the landmark 13th-century Dominican Prototype of Blessed Humbert of Romans preserved at Santa Sabina in Rome (MS XIV L1), this volume restores the pristine, pre-Tridentine daily office as prayed by St. Thomas Aquinas, St. Albert the Great, and St. Raymond of Penyafort.

Breviary

Why a Dominican Breviary?

For centuries, the Dominican Divine Office (known today as the Liturgy of the Hours) formed the daily prayer of generations of Dominican friars and nuns. Yet today, complete editions of this tradition are extraordinarily difficult to obtain.

Out of print for decades and virtually unobtainable outside of costly collector markets, this new edition offers laity, scholars, clergy, religious, and lay Dominicans an accurate, unabridged text of the classic Dominican Breviary, presenting the entire liturgical year (from Matins to Compline) in one portable, beautifully typeset 5" × 7.5" (12.7cm × 19.1cm) volume.

Discover the Dominican Liturgy

Pray the complete medieval Office as generations of Dominicans once did.

Practical & Accessible

A handy, compact volume created for daily use without the prohibitive costs of rare antique editions.

Historically Faithful

Carefully restored from the medieval master copy into a clear, modern format.

Rooted in Tradition

The Codex of Humbert, Santa Sabina XIV L1 in Rome, is comprised of 502 folios of parchment, with each folio at 48cm × 32cm. In the upper right corner is depicted the Blessed Virgin, the upper left Gabriel, and the lower left and right are two Dominican Friars.

The title of the codex is written across these four depictions, Ecclesiasticum Officium Secundum Ordinem Fratrum Predicatorum In Hoc Volumine Per Quatuordecim Libros Distinctum Hoc Ordine Continetur (The Ecclesiastical Office According to the Order of Friars Preachers, Divided into Fourteen Books, Contained in this Order), and lists the following sections:

  • Ordinarium (Ordinal)
  • Martyrologium (Martyrology)
  • Collectarium (Collectary)
  • Processionarium (Processionary)
  • Psalterium (Psalter)
  • Breviarium (Breviary)
  • Lectionarium (Lectionary)
  • Antiphonarium (Antiphonary)
  • Graduale (Gradual)
  • Pulpitarium (Pulpitary)
  • Missale Conventuale (Missal for Sung Mass)
  • Epistolarium (Epistolary)
  • Evangelistarium (Evangelistary)
  • Missale Minorum Altarium (Missal for Low Mass)

The full scan of the manuscript can be viewed online at Archive.org

Medieval Dominican manuscript
The first page of the Prototype of Humbert.

Why This Edition is Different

The impetus for this Breviary was driven by five goals:

Restoration of the Humbert Liturgy

Reconstructed from the Codex of Santa Sabina XIV L1, preserving the Dominican Office according to the standard of Humbert of Romans.

Accessibility of Books

Long have high costs been a barrier of entry in acquiring Breviaries. This Breviary aims to be accessible, by lowering the barrier of entry, and contributing to the proliferation of the Latin Divine Office.

A Pre-Divino Afflatu Breviary

For more than a hundred years, the ancient Roman cursus has been out of print, and all Breviaries today, even traditional ones, trace their heritage to the radical Breviary reforms of St. Pius X.

Open Source Development

Compiled using LaTeX, with source files publicly available, this project aims to allow future re-use, collaboration, and improvement of liturgical texts.

Utilization of Modern Technologies

By utilizing modern print-on-demand publishing, this Breviary aims to demonstrate the viability of using such services to print liturgical books for private use, restoring the medieval definition of the Breviarium or Plenarium as a compendium of books.

The Making of the Edition

This Breviary has been carefully transcribed from the manuscript to preserve the structure, rubrics, prayers, lessons, and Kalendar of the Prototype.

Traditional Orthography

In keeping with the nature of the source, the medieval orthography has been largely preserved, rendering the text faithful to a millennium of Latin scribal practice.

Open Development

Hosted on GitHub, the source files are available publicly, allowing others to study, adapt, and contribute to future development.

Future Reusability

This project represents the first foray into open-source Breviaries, aiming for future reusability through flexible macros and templates that allow for diverse layouts and styles.

A Labor of Love

From concept and historical research to LaTeX typesetting, page design, and preparation for publication, this Breviary has been the passion project of a single individual.

The Volume

Cover of the Dominican Breviary

The complete Dominican Office, presented in a handy, compact 5" × 7.5" × 1.4" (12.7cm × 19.1cm × 3.6cm) paperback volume intended for daily use.

Liturgical Calendar

The calendar preserves the pristine Dominican cycle of feasts as established under Blessed Humbert of Romans, limiting the number and rank of feasts, and allowing the Temporal Cycle to take precedence.

Preview Calendar

Complete Breviary

Contains all the Latin texts required for the daily recitation of the Divine Office.

Entire Year

Contains the complete liturgical year in one compact volume.

Compact Size

Designed for daily use, not an heirloom shelf-item.

Availability Now

Order your own copy of the Dominican Breviary and 2027 Ordo today.

Features and Details

Tradition

The Venerable Traditional Dominican Rite, transcribed from the 13th-century prototype of Humbert of Romans.

Language

Medieval Latin, with an English introduction.

Format

Color paperback print edition available through Amazon.

Dimensions

5" × 7.5" × 1.4" (12.7cm × 19.1cm × 3.6cm); no ribbons; users are encouraged to use bookmarks, prayer cards, or tab inserts for navigation.

Pagecount

571 pages.

Font

9pt Merriweather has been chosen for its readability and generous x-height for exceptional legibility.

Availability

This Breviary is available through Amazon, with a free PDF preview and code available on GitHub.

Frequently Asked Questions

What tradition does it follow? What is the Dominican Rite?

This Breviary follows the Dominic tradition as codified by Bl. Humbert of Romans, the fifth master-general of the Dominican Order. As Fr. William Bonniwell, O.P. writes in his A History of the Dominican Liturgy, St. Dominic was "an ardent lover of the liturgy" and believed that for "preaching to be fruitful it must needs be sustained and vivified by prayer (sic)." The Dominican Rite, more properly, the Dominican Use, is a variant of the Roman Rite with medieval variations, and is but one example of the colorful and manifold varieties of liturgy during the Age of Faith.

How does this differ from the Traditional (1962) Roman Breviary?

This Breviary preserves the ancient Roman Psalter distribution and cursus, from twelve Psalms at ferial Matins, to eighteen Psalms and three nocturns at Sunday Matins, to the daily use of Psalm 118 at the minor hours, and fixed Psalms at Compline. The antiphons, feasts, and Kalendar also differ by many respects, being proper to the Dominican Rite, and thus cannot be easily adapted to the 1962 Roman Breviary without causing great harm to both traditions.

How does this differ from the Liturgy of the Hours? Is this just a set of Dominican Propers?

This Breviary contains the medieval Divine Office, which differs from the Liturgy of the Hours in several aspects, from seven canonical hours (vs. five), a weekly Psalter (instead of a four-week Psalter), and different rubrical logic concerning the structure of feasts, for example, ranks and rules regarding First Vespers and Octaves.

Does this Breviary contain all the canonical hours?

Yes, this Breviary contains all the canonical hours for every day of the year in a single volume.

Does this Breviary include the complete Matins lessons for the whole year?

Yes. It contains the complete Matins lessons of the 13th-century Dominican Office, utilizing the internal rubrical system of lessons from the Commons and Dominical repetitions.

What calendar does this use?

This Breviary uses the Kalendar as given in the Humbertian prototype, that is, the Dominican Rite Kalendar of the 13th century. The Kalendar is balanced between Temporal and Sanctoral feasts, and is simple to follow.

Is there a companion Yearly Ordo?

Yes. A companion Yearly Ordo has been published and is available below! It provides instructions on which Office is said for each day, and includes an English translation of the rubrics, along with two full specimen Offices.

What is the layout of this Breviary?

The layout of this Breviary follows the source Codex of Santa Sabina XIV L1. While the medieval layout differs somewhat from modern breviaries, it mirrors the traditional structure of printed Dominican Breviaries, such as the 1894 edition, as found online.

Will chant or music be included in this volume?

To keep pagecount low, chant notation is not included in this Breviary. While LaTeX supports chant notation, music is outside the scope of this project. That being said, this is a Dominican Breviary, so anyone with Dominican Chant Books can sing them in their proper melodies.

What language is this Breviary? Will an English version be offered?

Medieval Latin. This is the Latin of the Catholic Church. Considering the international audience, and for fidelity to the medieval source, Latin will be the only option. Latin ensures that anyone with Dominican Chant Books can sing them in their proper melodies. Those looking for English may find the Ordo companion helpful with English rubrics.

Why does the Latin use medieval spelling?

For authenticity and fidelity to the text, the Latin orthography is based directly on the source manuscript, with modern distinction between u's and v's. This style of Latin was the norm for nearly 1,000 years, before the Humanists of the Renaissance standardized Latin orthography.

Will a hardcover option be offered?

If there is demand, other publishers will be considered for hardcover, as Amazon KDP is limited in options when it comes to hardcover publishing and is not conducive to the flipping of pages in daily use.

Is it Open Source? Is the source code available? Can I contribute to this or future projects?

Yes. The complete LaTeX repository is open-source and hosted on GitHub. Anyone can inspect the code, compile their own PDF, or fork the repository to compile their own Breviary or Liturgical Book. The source is available at AlanL399/BreviaryTypesetting

How does this Breviary compare to other Divine Office options?

Compared to competing offerings, this Breviary is a class of its own, being a full, one-volume Breviary with no excised content. Other Breviary options are either expensive, multi-volume sets, or are one-volume truncated editions with omitted material, e.g. diurnals or beginner editions.

How does the price compare to Breviaries published by mainstream liturgical publishers?

By utilizing free software, such as LaTeX and GitHub, and modern technologies, namely, print-on-demand (POD) publishing, the immense overhead, boardrooms, and marketing budgets of corporate publishing houses can be easily bypassed. Under an economical mindset, gold-gilt and fine leather options were skipped, costs have been kept low, leaving the focus on the publishing alone.

How does this Breviary compare to monthly prayer subscription services?

Compared to publishers offering a monthly subscription for a selection of the Divine Office, this Breviary is more economical as a one-time purchase than a whole year's subscription for a reduced selection of disposable, landfill-bound monthly prayer booklets. This volume has zero recurring fees, zero corporate subscriptions, and zero waste.

Is this approved for liturgical use?

This edition is published as a historical and devotional Breviary for private recitation and scholarship.

For laypersons, private prayer does not require any ecclesiastical approval. As Pope Benedict XVI once said, "What earlier generations held as sacred, remains sacred and great for us too, and it cannot be all of a sudden entirely forbidden or even considered harmful. It behooves all of us to preserve the riches which have developed in the Church's faith and prayer, and to give them their proper place." Clerics or those living under a rule should consult their competent religious superiors about use of this volume to fulfill their canonical obligation.

Accordingly, this book makes no claim to ecclesiastical approbation for public liturgy.

ORDO DIVINI OFFICII RECITANDI

Iuxta Ritum Sacri Ordinis Fratrum Predicatorum

Pro Anno Domini. MMXXVII

This 2027 Ordo Predicatorum is designed to be the indispensable companion to the Dominican Breviary of Humbert, providing day-by-day details to the Divine Office of Humbert. Adapted for the Gregorian calendar, this volume facilitates the recitation of the pristine Dominican Office from November 2026 through December 2027. This dimensions of this Ordo are 5" × 7.5" (12.7cm × 19.1cm), complementing the Breviary exactly.

This Ordo Contains:

  • Celebratory & Navigational Notes: English guidance on extra-rubrical customs, liturgical notes, and practical directions not explicit in the base rubrics.
  • English Translations of the Rubrics: Full English translations of the Latin rubrics extracted directly from the Dominican Breviary.
  • The Kalendar (Nov 2026 – Dec 2027): Provides a brief overview of the liturgical year.
  • The Ordo Proper: Daily instructions detailing the exact Office to be recited throughout 2027.
  • Appendix of Specimen Offices: Two full specimen offices are printed as an example for reference.

Availabile now via Amazon.

2027 Ordo Cover

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