Dialogues on the Holy and Consubstantial Trinity

Dialogi de sancta et consubstantiali Trinitate · Cyril of Alexandria · early 5th c. (c. 420s) · 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 dialogues on the Trinity' returns fifteen records; the only edition of the work itself is the French Sources chrétiennes set ('Dialogues sur la Trinité', Paris: Éditions du Cerf, 1976-1978), and the rest are English studies and handbooks, not translations: https://hollis.harvard.edu/discovery/search?query=any,contains,Cyril%20of%20Alexandria%20dialogues%20on%20the%20Trinity&tab=Everything&search_scope=MyInst_and_CI&vid=01HVD_INST:HVD2&offset=0 The narrower 'Cyril of Alexandria "Dialogues on the Trinity" English translation' returns 0 records: https://hollis.harvard.edu/discovery/search?query=any,contains,Cyril%20of%20Alexandria%20%22Dialogues%20on%20the%20Trinity%22%20English%20translation&tab=Everything&search_scope=MyInst_and_CI&vid=01HVD_INST:HVD2&offset=0 No Fathers of the Church, Ancient Christian Writers or Popular Patristics volume was located.

Seven dialogues; the French Sources chrétiennes edition (three volumes, 1976-1978) is the standard modern rendering. The 'translations' entry records that French edition as the only modern-language version found, not an English one. Individual volume years/translators not verified beyond the set's date range. The French Sources chrétiennes set is recorded in the evidence as the nearest modern rendering; there is no English entry to list.

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 — 1 candidate(s). Wrong OCR model (Latin) for a Greek-only work; the seven Dialogi sit at PG 75, cols 1075ff, and the pages are microfilm-derived monochrome images (usable, but no better scan family exists on IA). Re-OCR route: crop the left column, then `pdftoppm -f N -l N -r 300 -png` + `tesseract -l grc`. Sources checked and negative on IA: the patrologia-volumes container (vol. 75 absent — it and vol. 106 are the only missing tomes), patrologiae_cursus_completus_gr_vol_* (78 items scraped, no vol. 75), patrologicursus075migngoog (/metadata returns {}, i.e. dark). Not checked in this pass: DigiVatLib, BnF, e-rara (none is expected to hold a printed PG tome).

Scan / witness	Format	Pages	Rights	OCR	Evidence
Patrologiae Cursus Completus, ... 1859: Vol 75 (= PG 75; GTU microfilm copy) internet-archive · bim_early-english-books-1641-1700_patrologiae-cursus-completus-_1859_75	pdf	751	public-domain	none	Item _meta.xml: imagecount 751, collection gtu_microfilm, date 1859 (HTTP 200). _djvu.txt Range sample at byte 1,800,000 returned HTTP 206, 118,280 chars, 119 Greek codepoints (script ratio 0.001) and 0 hits for each of…

Harvard Hollis

Hollis query: Cyril of Alexandria — 620 record(s); match basis author_only.

Record	Citation
Cyril of Alexandria Cyril, Saint, Patriarch of Alexandria, approximately 370-444 · 2000 · eng	Cyril, Saint, Patriarch of Alexandria, approximately 370-444. "Cyril of Alexandria." London ; New York : Routledge, 2000. https://hollis.harvard.edu/permalink/f/1s5nto6/990083038760203941
Cyril of Alexandria : Against Julian : introduction and translation Cyril, Saint, Patriarch of Alexandria, approximately 370-444 · 2025 · eng	Cyril, Saint, Patriarch of Alexandria, approximately 370-444. "Cyril of Alexandria : Against Julian : introduction and translation." Cambridge, United Kingdon ; New York, NY : Cambridge University Press, 2025. https://hollis.harvard.edu/permalink/f/1s5nto6/99158947954003941
Cyril of Alexandria's trinitarian theology of scripture Crawford, Matthew R · 2014 · eng	Crawford, Matthew R. "Cyril of Alexandria's trinitarian theology of scripture." Oxford, United Kingdom : Oxford University Press, 2014. https://hollis.harvard.edu/permalink/f/1s5nto6/990142337590203941
Cyril of Alexandria, select letters Cyril, Saint, Patriarch of Alexandria, approximately 370-444 · 1983 · eng	Cyril, Saint, Patriarch of Alexandria, approximately 370-444. "Cyril of Alexandria, select letters." Oxford [Oxfordshire] : Clarendon Press ; New York : Oxford University Press, 1983. https://hollis.harvard.edu/permalink/f/1s5nto6/990010634270203941
St. Cyril of Alexandria : letters Cyril, Saint, Patriarch of Alexandria, approximately 370-444 · 1987 · eng	Cyril, Saint, Patriarch of Alexandria, approximately 370-444. "St. Cyril of Alexandria : letters." Washington, D.C. : Catholic University of America Press, c1987. https://hollis.harvard.edu/permalink/f/1s5nto6/990004633330203941

Sources checked

Cite: Tergwame, “Dialogues on the Holy and Consubstantial Trinity” (greek gap dossier), 2026. https://naxiai.com/christian/gaps/greek-cyril-dialogi-trinitate