On the Incarnation of the Only-Begotten

De incarnatione unigeniti · Cyril of Alexandria · c. 430-431 · treatise

Greek · domain: alexandrian · researched 2026-11-13

no English translation located. No published English translation of this text was located in the catalogues and series checked. Where only a non-English rendering or a translation of a daughter version exists, it is recorded below and does not close the gap. Treat this as a gap candidate, not as proof that no translation exists; the evidence names every source checked.

Why this is in the register

HOLLIS Primo 'Cyril of Alexandria "De incarnatione unigeniti"' returns six records: a 1965 Brussels reprint of the Greek/Latin edition (with De recta fide ad Imperatorem), the 1638 and 1868-1877 Opera, an Armenian series volume, a Cairo Arabic commentary, and one English monograph ('St. Cyril of Alexandria's Metaphysics of the Incarnation', 2016) that is a study: https://hollis.harvard.edu/discovery/search?query=any,contains,Cyril%20of%20Alexandria%20%22De%20incarnatione%20unigeniti%22&tab=Everything&search_scope=MyInst_and_CI&vid=01HVD_INST:HVD2&offset=0 The Fathers of the Church volume 'Three Christological Treatises' (FC 129, 2014) translates only On Orthodoxy to Theodosius, the Defense against the Bishops of Oriens and the Defense against Theodoret: https://hollis.harvard.edu/discovery/search?query=any,contains,Cyril%20of%20Alexandria%20three%20christological%20treatises&tab=Everything&search_scope=MyInst_and_CI&vid=01HVD_INST:HVD2&offset=0 'On the Unity of Christ' (Popular Patristics, 1995) is a different work (Quod unus sit Christus): https://hollis.harvard.edu/discovery/search?query=any,contains,Cyril%20of%20Alexandria%20%22On%20the%20unity%20of%20Christ%22&tab=Everything&search_scope=MyInst_and_CI&vid=01HVD_INST:HVD2&offset=0 No translation of De incarnatione unigeniti was located.

A key Christological treatise of the Nestorian controversy, written shortly before Ephesus. Neither the 2014 FC Christological volume nor the 1995 Popular Patristics volume covers it, which makes the gap easy to mis-state.

Existing translations recorded

None recorded in English. Non-English versions, where they exist, are named in the evidence above.

Electronic text

No open electronic text was verified for this work. The Greek/Coptic/Geʿez may exist only in a print or subscription edition (Migne, CSCO, TLG, CMCL).

Scanned witnesses

Scan search: open scan — 2 candidate(s). PG 75 is the only public-domain Greek text and reprints this same 1638 Paris Greek-Latin edition, so the two IA items are textually the same witness. Neither text layer has Greek: re-OCR from images is required (left column Greek, right column Latin). De Durand's critical edition (SC 97, 1964) and the 1965 Brussels reprint were not located on IA; HathiTrust and Gallica are Cloudflare-blocked from this host (HTTP 403). e-rara/MDZ/ONB searches returned only JS search shells (MDZ 404 on the SRU endpoint, ONB 504), so they contributed no candidate.

Scan / witness	Format	Pages	Rights	OCR	Evidence
Patrologia Graeca, tomus 75 (Migne) — item 'Patrologia Graeca', file 75.pdf / 7… internet-archive · patrologia-graeca_202105	pdf	767	public-domain	none	75_djvu.txt HTTP 206 (4.20 MB total); 75.pdf HTTP 206. Volume 'ELENCHUS' line 313 lists 'De incarnatione Unigeniti' and the running head 'DE INCARNATIONE UNIGENITI' recurs from line 93223 to 96972 (Migne cols 1189-1252)…
S. P. N. Cyrilli Alexandriae Archiepiscopi Opervm (Paris, 1638) internet-archive · bub_gb_I42novAsnBgC	pdf	882	public-domain	none	djvu.txt HTTP 200 (3.61 MB). Contents index line 74 'Scholia de Incarnatione unigeniti'; the treatise's running head 'DE INCARNATIO / ne Unigeniti' at line 98036 and 'EIVSDEM CYRILLI ... Scholia de Incarnatione unigenit…

Harvard Hollis

Hollis query: Cyril of Alexandria "On the Incarnation of the Only-Begotten" — 3 record(s); match basis author_title.

Record	Citation
St. Cyril of Alexandria's Metaphysics of the Incarnation Trostyanskiy, Sergey · 2016 · eng	Trostyanskiy, Sergey. "St. Cyril of Alexandria's Metaphysics of the Incarnation." New York : Peter Lang Publishing, [2016]. https://hollis.harvard.edu/permalink/f/1s5nto6/990148433180203941
Eznik of Kolb ; Cyril of Alexandria ; Constantine Porphyrogenitus Arzoumanian, Zaven · 1976 · eng	Arzoumanian, Zaven. "Eznik of Kolb ; Cyril of Alexandria ; Constantine Porphyrogenitus." [New York] : [Diocese of the Armenian Church of America], [1976]. https://hollis.harvard.edu/permalink/f/1s5nto6/990010832740203941
ʻAmmānūʼīl shākīnāh ʻAhd al-Jadīd : bi-ḥasab sharḥ al-Qiddīs Kīrilus al-Iskandarī lil-Khaymah al-muqaddasah : fī Kitāb al-Sujūd wa-al-ʻibādah bi-al-rūḥ wa-al-ḥaqq Ibrāhīm, Jūrj ʻAwaḍ · 2015 · ara	Ibrāhīm, Jūrj ʻAwaḍ. "ʻAmmānūʼīl shākīnāh ʻAhd al-Jadīd : bi-ḥasab sharḥ al-Qiddīs Kīrilus al-Iskandarī lil-Khaymah al-muqaddasah : fī Kitāb al-Sujūd wa-al-ʻibādah bi-al-rūḥ wa-al-ḥaqq." [Cairo] : Jūrj ʻAwaḍ Ibrāhīm, 2015. https://hollis.harvard.edu/permalink/f/1s5nto6/990145393320203941

Sources checked

Cite: Tergwame, “On the Incarnation of the Only-Begotten” (greek gap dossier), 2026. https://naxiai.com/christian/gaps/greek-cyril-de-incarnatione-unigeniti