Iyãsū erscheint in den Leibniz-Texten in der Regel als "rex Abyssinorum" (Abessinien) bzw. "rex Aethiopiae".

Truhart, Peter: Regents of nations : Systematic chronology of states and their political representatives in past and present. P. 1-4. 2nd, revised and enlarged edition. München: Saur, 2000-2006

P. 2, S. 604