In barbaric societies, and up to quite recent times, the importance of the ruling class man was indicated by the number of concubines he had, and the position of these women was hardly inferior to that of the wife or queen.
"The Book of Life: Vol. I Mind and Body; Vol. II Love and Society"
Upton Sinclair
A part of this money I believe was used to make Arctic concubines comfortable.
"My Attainment of the Pole"
Frederick A. Cook
A tent was set up on the roof of the palace of Zion, under which Absalom lived with the ten concubines whom David had left behind in Jerusalem before the eyes of Israel.
"The History of Antiquity, Vol. II (of VI)"
Max Duncker