Johannes de Bado Aureo

The identity of the heraldic writer Johannes de Bado Aureo is a matter of dispute. ("Vado Aureo" is a Latinized form of Guildford, in Surrey.) His work, Tractatus de armis, written at the behest of the late Anne of Bohemia (died 1394), consort of Richard II, appeared first in a Latin manuscript that is conventionally dated from the wording of the dedication c.1395. It was widely circulated, and translated into English and Welsh.[1] Its main rival among Latin tractates in the field of heraldry was De Officio Militari by Nicholas Upton (1454),[2] which treated heraldry in the larger context of the arts of war. Both works depend on the first work of heraldic jurisprudence, De Insigniis et Armiis, which was written by a professor of law at the University of Padua, Bartolus de Saxoferato, (Bartolo of Sassoferrato), in the 1350s.

Johannes broke with previous tradition in denying the right of a man-at-arms to assume a coat of arms.

Sir Edward Bysshe published both treatises as Nicholai Vptoni, de Stvdio Militari, Libri Quatuor, Johan. de Bado Aureo, Tractatus de Armis (London, 1654).

Professor Evan J. Jones, Medieval Heraldry: Some Fourteenth Century Heraldic Works (Cardiff: William Lewis, Ltd.) 1943, suggested that "Johannes de Bado Aureo" may have been Bishop Sion Trevor, an ecclesiastic who was trained in Roman law, and rose through the Church hierarchy to become Bishop of St Asaph, Wales.

Footnotes

The Welsh translation, Llyfr Arfau, is particularly accurate and complete, giving rise to the supposition that it was made by Johannes de Bado Aureo himself.
Manuscripts with coloured achievements of coats-of-arms are in British Library Add MS 30946, Cotton MS Nero C III, Harley MS 3504, 61060, and in College of Arms MS Sheldon 444.

References

C. Levin, "The Law of Arms in Medieval England"

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[1] The Welsh translation, Llyfr Arfau, is particularly accurate and complete, giving rise to the supposition that it was made by Johannes de Bado Aureo himself.

[2] Manuscripts with coloured achievements of coats-of-arms are in British Library Add MS 30946, Cotton MS Nero C III, Harley MS 3504, 61060, and in College of Arms MS Sheldon 444.