sealed by a dual marriage, that would require Infante Peter to bring a group of artisans to Ethiopia, where he would marry Yeshaq's daughter. It is not clear how or if Alfonso responded to this letter, although in a letter that reached Yeshaq's successor Zara Yaqob in 1450, Alfonso wrote that he would be happy to send artisans to Ethiopia if their safe arrival could be guaranteed, for on a previous occasion a party of thirteen of his subjects traveling to Ethiopia had all perished. A notable example of Ethiopian literature that has survived from this period is a panegyric addressed to Yeshaq, which Enrico Cerulli singled out as a gem of Ethiopian poetry. The first mention of the Yem people is found (under the now pejorative exonym "Jangero") in the victory song of Yishaq I, with them stated as paying tribute in the form of horses to the king. The first mention of the ethnonym "Somali" dates to the reign of Emperor Yishaq who had one of his court officials compose a hymn celebrating a military victory over the Sultan of Ifat's eponymous troops. E. A. Wallis Budge states that he was assassinated, and "buried in Tadbaba Maryam", a convent in Sayint, while Ethiopian historian Tadesse Tamrat believes that the primary sources mask Yeshaq's death in battle against the Muslims or Adalites. References 1429 deaths 15th-century monarchs in Africa 15th-century emperors of Ethiopia 15th-century murdered monarchs Solomonic dynasty Year of birth unknown People murdered in Ethiopia