partial / older only. An English translation exists but is partial or older than the critical edition. The gap is a modern, complete translation from the original. A rendering of a daughter version does not count here: it is recorded on the dossier of the text it actually translates.
Why this is in the register
The epigrams — the poems transmitted as Book VIII of the Palatine Anthology, as the 2011 dissertation 'To ogdoo vivlio tēs Palatinēs anthologias: mia meletē tōn epigrammatōn tou Grēgoriou Nazianzēnou' documents (https://hollis.harvard.edu/discovery/search?query=any,contains,Nazianzus%20epigrams&tab=Everything&search_scope=MyInst_and_CI&vid=01HVD_INST:HVD2&offset=0 — have one English rendering only, Thomas Drant's verse collection 'Epigrams and sentences spirituall in vers, of Gregori Nazanzen' (London: Thomas Marshe, 1568; HOLLIS record and EEBO copy, https://hollis.harvard.edu/discovery/search?query=any,contains,Nazianzus%20epigrams%20English&tab=Everything&search_scope=MyInst_and_CI&vid=01HVD_INST:HVD2&offset=0 digital scan at https://archive.org/details/bim_early-english-books-1475-1640_epigrams-and-sentences-s_gregory-of-nazianzus_1568). The HOLLIS search 'Nazianzus epigrams' (17 records) shows that modern translation has gone into Italian ('Epitaffi; Epigrammi', 2013) and Spanish ('Epitafios; Epigramas; Cristo sufriente', 2025), with no modern English counterpart; Drant's 1568 volume renders epigrams together with the gnomic 'sentences' and is not a complete translation of the epigram corpus.
The linked scan is the 1568 English verse version (an e-text of the translation, not of the Greek). The Greek epigrams are printed with Gregory's poems in Migne PG 37-38; no separate open Greek e-text was located.
Gregory, of Nazianzus, Saint. "Epigrams and sentences spirituall in vers." Imprinted at London ... : By Thomas Marshe, 1568. https://hollis.harvard.edu/permalink/f/1s5nto6/990027867950203941