Ralph de Diceto

Opening page from the St Alban's Abbey copy of Ralph's Abbreviationes chronicorum and Ymagines historiarum, featuring a table of the innovative marginal signs he introduced to help index his work

Ralph de Diceto (d. c. 1202) was archdeacon of Middlesex, dean of St Paul's Cathedral (from c. 1180), and author of two chronicles, the Abbreviationes chronicorum and the Ymagines historiarum.

Early career

He is first mentioned in 1152, when he received the archdeaconry of Middlesex. He was probably born between 1120 and 1130; of his parentage and nationality we know nothing. The common statement that he derived his surname from Diss in Norfolk is a mere conjecture. Dicetum may equally well be a Latinized form of Dissai, Dicy, or Dizy, place names in Maine, Picardy, Burgundy, and Champagne.[1]

In 1152 Diceto was already a master of arts and, presumably, he had studied at Paris. His reputation for learning and integrity stood high. He was regarded with respect and favor by Arnulf of Lisieux and Gilbert Foliot of Hereford (afterwards of London), two of the most eminent bishops of their time. Quite naturally, the archdeacon took in the Becket question the same side as his friends.[1]

By 1164 he had acquired the livings of Aynho, Northamptonshire, and Finchingfield, Essex, and served them both by vicars. [2]

Although his narrative is colourless and although he was one of those who showed some sympathy for Becket at the council of Northampton (1164), the correspondence of Diceto shows that he regarded the archbishop's conduct as ill considered and that he gave advice to those whom Becket regarded as his chief enemies.[1]

Diceto was selected in 1166 as the envoy of the English bishops when they protested against the excommunications launched by Becket. But, apart from this episode, which he characteristically neglects to record, he remained in the background. The natural impartiality of his intellect was accentuated by a certain timidity, which is apparent in his writings no less than in his life.[1]

Dean of St Paul's

About 1180 be became dean of St Paul's. In this office he distinguished himself by careful management of the estates, by restoring the discipline of the chapter, and by building at his own expense a deanery house. A scholar and a man of considerable erudition, he showed a strong preference for historical studies; and about the time when he was preferred to the deanery he began to collect materials for the history of his own times.[1]

His friendships with Richard Fitz Nigel, who succeeded Foliot in the see of London, with William Longchamp, the chancellor of Richard I, and with Walter de Coutances, the archbishop of Rouen, gave him excellent opportunities of collecting information.[1]


His two chief works, the Abbreviationes chronicorum and the Ymagines historiarum, cover the history of the world from the birth of Christ to the year 1202. The former, which ends in 1147, is a work of learning and industry, but is almost entirely based upon extant sources. The latter, beginning as a compilation from Robert de Monte and the letters of Foliot, becomes an original authority c. 1172 and a contemporary record c. 1181. In precision and fullness of detail the Ymagines are inferior to the chronicles of the so-called Benedict and of Hoveden.[1]

Though an annalist, Diceto is careless in his chronology. The documents which he incorporates, while often important, are selected on no principle. He has little sense of style but displays considerable insight when he ventures to discuss a political situation. For this reason, and on account of the details with which they supplement the more important chronicles of the period, the Ymagines are a valuable though a secondary source.[1]

Editions of Diceto's writings

Online copy of Volume 1 on Google Books
Online copy of Volume 2 (1876) at Internet Archive.
Online copy of The Domesday of St Pauls at Internet Archive.


  1. 1 2 3 4 5 6 7 8  One or more of the preceding sentences incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Diceto, Ralph de". Encyclopædia Britannica. 8 (11th ed.). Cambridge University Press. pp. 177–178.
  2. Biography of Ralph de Diceto (August, 2016)

Further reading

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