Is it true that he is venerated as a saint? Wasn't he a miaphysite?
Kaleb of Axum - Wikipedia

de.wikipedia says that he's venerated in the Ethiopian Orthodox Tewahedo Church, "in communion with the Eritrean Orthodox Tewahedo Church, the Coptic Orthodox Church of Alexandria, the Malankara Orthodox Syrian Church, the Armenian Apostolic Church and the Syriac Orthodox Church, having gained autocephaly in 1959."

https://archive.org/details/romanmartyrology00cathuoft

That's roughly 500 pages. Did you find him there?

Yes. Use the search and search "Elesbaan"

He's listed as St. Elesbaan. Hence, the answer to your questions are, yes, he is venerated as a Saint, and no, he wasn't miaphysite.


Looking around the internet: Like São Benedito (Benedict the Moor) and Santa Ifigênia (Ephigenia of Ethiopia), Santo Elesbão (Elesbaan) seems to be better known in Brazil then in other places.








Santo Elesbão and Santa Ifigênia on the altar of the eponymous Church in the center of Rio de Janeiro R.J., first build in A.D. 1754.

Most old schismatic communities are shadowed by smaller bodies of believers who are joined to Rome, but hold to their traditions. Therefore there can be a commonality of saints between Catholics and schismatics. As the post above mentions a clearly black saint attracted the devotion of onetime slaves of which Brazil had many.

Hmm I had thought the Ethiopians went schismatic after Chalcedon