Obsecro te and O intemerata (Marian Prayers from Catherine de' Medici's Hours)
Obsecro te / O intemerata
Catalogue updated 2026-06-08
Obsecro te, domina sancta Maria, mater Dei, pietate plenissima.
Our renderingI beseech you, holy Lady Mary, Mother of God, most full of piety.
What it is
Two extended Marian intercession prayers that close the prayer corpus in Catherine de' Medici's Smith-Lesouëf 42, named in the New Liturgical Movement's detailed analysis of that manuscript. The Obsecro te ('I beseech you') appeals to the Virgin through the sorrows of the Passion and the joys of the Resurrection, closing with a personalised petition for the owner's specific needs; both prayers in Smith-Lesouëf 42 employ feminine grammatical forms, confirming Catherine's personal devotional use. The O intemerata ('O incomparable one') is an even longer prayer addressed jointly to Mary and John the Evangelist, reflecting a medieval tradition of paired Marian-Johannine intercession. Both were among the most popular optional additions to aristocratic French Books of Hours during the 15th and 16th centuries.
Why it still matters
Both prayers are freely available in Latin online and in traditional devotional editions; the Obsecro te in particular remains prayed today by those drawn to the classical Marian devotional tradition.
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Kept alongside
The Imitation of Christ
De Imitatione Christi
Written by Thomas à Kempis in the Netherlands in the circle of the Brethren of the Common Life — the same Devotio Moderna movement that directly shaped Margaret of York's documented devotional practice and the piety of Isabella of Portugal at the Burgundian court — the Imitation became the most copied vernacular religious text in 15th-century Europe, circulating in thousands of manuscripts and hundreds of early printed editions. Its four books move from the vanity of worldly learning through conformity to Christ, inward consolation, and finally the sacrament of the Eucharist, forming a complete program of interior conversion. No specific ducal inventory copy has been identified linking this text to Valois-Burgundy by name, but its presence in court circles of this era and region is established through movement history rather than document. It remains the second most widely read Christian book after the Bible.
Little Office of the Blessed Virgin Mary
Officium Parvum Beatae Mariae Virginis
The core structural text of every Book of Hours owned by the Medici queens — present in Smith-Lesouëf 42, NAL 82, and MS. Douce 112 — the Little Office organises eight canonical hours from Matins through Compline around Marian psalms, antiphons, versicles, and responsories. In the royal manuscripts each canonical hour was introduced by a full-page miniature depicting a scene from the life of the Virgin, integrating visual meditation with the spoken prayer. This daily rhythm of Marian devotion shaped the private piety of French and other European royal households across several centuries, providing a structured Marian framework parallel to but distinct from the public Mass. Its universality across all Books of Hours makes it the single most important devotional text in the aristocratic prayer tradition.
Spiritual Exercises of Saint Ignatius of Loyola
Exercitia Spiritualia
The foundational manual of Ignatian spirituality, structured as four 'weeks' of meditations guiding a retreatant from self-knowledge and sin through the life of Christ to apostolic commitment. Eleonora di Toledo, Duchess of Florence and wife of Cosimo I de' Medici, became the primary Medici patron of the Jesuits in Tuscany from the late 1540s: she negotiated with Diego Laínez, whose sustained advocacy led to the first Jesuit school in Florence, and she died in 1562 attended by a Jesuit confessor. The Spiritual Exercises were the foundational formation manual of her Jesuit confessors and spiritual directors, making the connection strongly documented through institutional proximity even though no inventory record confirms Eleonora personally held a copy.