Question: What is the date of death of Abba Saga's father?
Sentence (from "Zara Yaqob"): (Ge'ez ዘርአ:ያዕቆብ "zar'ā yāʿiqōb", English: "Descendant of Jacob"; 1399 – 26 August 1468) was the Emperor ("nəgusä nägäst") of Ethiopia, and a member of the Solomonic dynasty who ruled under regnal name Kwestantinos
Relevant evidence: Yes