- The given name we found as a Hungarian feminine name in "The World of Names: A Study in Hungarian Onomatography" by Be/la Ka/lma/n.
- Kálmán's "World of Names" modernizes spellings and lacks dates for anything, so it should not be relied on as sole documentation.
- Fehértói under Viraag dates Wiraag to 1275 as a feminine name. There's also a heading for Viragus, with one (masculine) citation for Vyragus in 1237. (Modernly, virág is "flower", and virágos is "flowery".)
- Onomasticon Turcicum says there's an island called Qara-bay or Karabai in the Black Sea. Onomasticon Turcicum gives multiple examples of Tatars in the 1500s and early 1600s using this name.
- numerous towns in Azerbaijan and Kyrgyzstan using Qarabay... https://mapcarta.com/33959242
- there is a village called Karakó in Vas county (western Hungary); it becomes Karakai when the -i "of, from" suffix is added to make a locative byname/surname. Kázmér s.n. Karakai dates the spelling Karakay to 1559.
- Another option: Fehértói has a header for a personal name Karapa, with one citation dated to 1299. It was too rare to show up as a surname in Kázmér, but other names from the same period generally became unmarked patronymics, with the occasional marked example with -fi "son" or -i "of". (The latter sort often can't be told apart from locatives, because the most common pattern of Hungarian placenaming was to use the name of the local landlord, unchanged, as the name of the place.) This means that Karapa or Karapai (which can also be spelled Karapay) should be usable as a surname in a Hungarian name.
- SENA's Appendix C allows mixing of Hungarian with North and South Slavic and Mongolian, but not with Turkish.