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MCISAAC Family History

This interesting surname is of medieval Scottish origin, and is a patronymic of the male given name Isaac, itself coming from the Hebrew "Yitschak", a derivative of "tsachak", to laugh. This name was given to the son of Abraham and Sarah, and popular etymology connects the meaning with Sarah's laughter in her joy at bearing a son in her old age. The Greek translators of the Old Testament rendered "Yitschak" as "Isaak"; it was then Latinized into "Isaac". Though popular among Eastern Christians, it occurs only twice in the Old English period as the name of a priest. "Isac" (without surname) occurs in the Domesday Book of 1086, and Isaac was the name borne by the prior of Scone in 1154, while Ysaac of Brechin was a charter witness at St...