Aristocrats (among Hebrews and Greeks) often had harems that included women of common or even servile origin, as well as well-born aristocratic ladies. Normally, the successors would be chosen from the sons born by ladies; but on occasion those born by servile or common wives achieved the ascendency. In the latter case, tradition could dwell on the phenomenon as "worthy of saga."

Ch.VIII Further Observations on the Bible - The Common Background of Greek and Hebrew Civilizations (1965 [1962])