Eleni also known as Queen of Zeila was Empress of Ethiopia by marriage to Zara Yaqob, and served as regent between 1507 and 1516 during the minority of emperor Dawit II. She played a significant role in the government of Ethiopia during her lifetime, acting as de facto co-regent or advisor to a number of emperors; one testimony of this is the manuscript Bruce 88, which states that she had been in the palace of three illustrious Emperors: Zara Yaqob; his son by another wife, Baeda Maryam I, and Na'od.
Eleni of Hadiya, empress consort and later queen mother of Ethiopia
Zara Yaqob was Emperor of Ethiopia, and a member of the Solomonic dynasty who ruled under the regnal name Kwestantinos I. He is known for the Ge'ez literature that flourished during his reign, the handling of both internal Christian affairs and external wars with Muslims, along with the founding of Debre Birhan as his capital. He reigned for 34 years and 2 months.
Zara Yaqob's letter written in the Geʽez script at the Vatican Library