Such a marriage was, indeed, nothing but a form of concubinage.
"Museum of Antiquity" by L. W. Yaggy
In Europe, similar conditions prevailed, and although monogamy was the rule, concubinage and prostitution in all its forms existed.
"Sex=The Unknown Quantity" by Ali Nomad
Venal concubinage occupies an intermediate position between prostitution and concubinage.
"The Sexual Question" by August Forel
By a mere stroke of the pen you have emancipated millions from a condition of wholesale concubinage.
"The Life and Work of Susan B. Anthony (Volume 2 of 2)" by Ida Husted Harper
Under such rule, polygamy, concubinage, and adultery are not tolerated.
"The Ethnology of the British Colonies and Dependencies" by Robert Gordon Latham
Among the best of the pagan Romans, concubinage was looked upon as a defensible institution.
"Roman Women" by Alfred Brittain
Universal concubinage and prostitution, which must not immediately be put an end to!
"Discussion on American Slavery" by George Thompson
It is remarkable that the professional concubinage of the dancing-girl does not involve degradation, if it be with a person of the same caste.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4" by Various
Concubinage is the natural result of the Confucian theory of ancestral worship.
"Village Life in China" by Arthur H. Smith
Concubinage was a common practice: a mulatto was worth more in cash than a black man.
"Following the Color Line" by Ray Stannard Baker