Stuart C. Munro-Hay's Ethiopia and Alexandria: The Metropolitan Episcopacy of Ethiopia is perhaps somewhat dated but an interesting read. Focusing on relations between the Patriarchate of Alexandria and the Aksumite (then the Zagwe and Solomonic Dynasties) kingdom from Frumentius in the 4th century to Amda Tseyon in the 14th century, Munro-Hay's study illustrates how important our sources on the Patriarchs of Alexandria are for reconstructing Ethiopian (and Nubian) history. While much of the period covered in this book are well-trod and familiar to anyone interested in Aksumite and medieval Ethiopian history, the emphasis on Alexandria's connection to Abyssinia provides a different focus for one of the remarkable relationships of Christian history. Indeed, the very relocation of the Patriarchate of Alexandria to Cairo was, in part, motivated by the easier communication with Nubia and Ethiopia. Moreover, the chronicles and other Coptic, Syriac, Arabic, Greek and Ge'ez sources highlight the international role of the patriarchs as a major force in Egyptian relations with Nubia and Ethiopia during after the Muslim conquest of Egypt.
Unfortunately, some of the gaps in our knowledge of the later centuries of the Aksumite king and the paucity of clear data and chronologies on the transition from the Aksumite rulers to the Zagwe dynasy are not clarified by the familiar sources on the Coptic Church. Nonetheless, the sources on the patriarchs, the metropolitans they appointed for Ethiopia, and correspondence between Egyptian and Abyssinian rulers do seem to confirm the chronology of the Zagwe dynasty favored by Munro-Hay. Nonetheless,Munro-Hay had to rely on speculation for some of the possible omissions of metropolitans in Ethiopia, the melkite and Jacobite metropolitans, and the legends of Gudit, late Aksumite kings lists, and Ethiopian relations with the Nubian kingdoms. Indeed, it is the relatively unknown nature of relations between the Nubian statea of Makuria and Alwa with Abyssinia that are most interesting.
While Solomonic rulers like Yekuno Amlak and his son corresponded with the Mamluk sultans of Egypt via a Yemeni ruler as an intermediary, the land route to Egypt, via the Nubians, was an important route. Numerous envoys, metropolitans, and traders traveled through the route, but Nubian-Ethiopian relations are sadly still a topic of conjecture. Makuria and Alwa were also in the position of having local bishops or metropolitans, with the confirmation by the patriarch in Egypt. Surely, one would think Aksumite and later Ethiopian rulers would have also attempted to force the Coptic Church to recognize local metropolitans, too. Yet despite this, the Ethiopian rulers remained dependent on Alexandria to appoint metropolitans who, in turn, ensured local bishops and clergy could be created. In fact, Nubia appeared. to have played a supportive role in helping Abyssinia regain the favor of Alexandria while both Northeast African Christian regions also saw themselves as supporters of the Christian communities of Egypt. In fact, a perhaps large number of Copts even fled to Nubia and Ethiopia to escape Muslim persecutions