Ishoʿyahb IV (d. 1025) [Ch. of E.]

Cath. (1021–5) and formerly bp. of Beth Nuhadra , and exegete of the School of Mar Mari. His election was disputed and a letter by Eliya of Nisibis on the subject survives (ed. B. Vandenhoff, in OC 11 [1913]). Ishoʿyahb has been identified (by van Unnik) as the author of a series of 123 Questions and Answers on the Eucharist attributed in the mss. to Ishoʿyahb the Great (i.e., III). Neither ʿAbdishoʿ in his ‘Catalogue’, nor any other ancient source, attributes any works to Ishoʿyahb IV.

Primary Sources

J. Isaac, ‘Questions sur le Baptême par Ishoʿyahb IV’, Bayn al-Nahrayn 80 (20) (1992), 52–87. (photographic edition with AT)
W. C. van Unnik, Nestorian Questions on the Administration of the Eucharist, by Ishoʿyabh IV (1937; repr. 1970).

Secondary Sources

A. G. Kollamparampil, ‘Catholicos Mar Ishoʿyahb IV on the Eucharist’, Euntes Docete 48 (1995), 427–59.

Sebastian P. Brock

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Gorgias Encyclopedic Dictionary of the Syriac Heritage: Electronic Edition

Ishoʿyahb IV (d. 1025) [Ch. of E.]

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