concubinary

“But foremost of these all -- slavery, and domestication of concubinary slaves, the concomitant evils of war -- were abolished by him, ordering at the same time that prisoners of war should be either liberated gratis or ransomed.”

A Critical Exposition of the Popular 'Jihád' Showing that all the Wars of Mohammad Were Defensive; and that Aggressive War, or Compulsory Conversion, is not Allowed in The Koran - 1885

“Gambacurta (1394), exiled by the Florentines from his archbishopric of Pisa; Giovanni Benedetti, O.P. (1418), who reformed many convents of his order and concubinary priests; Ludovico Barbo (1437), Abbot of”

The Catholic Encyclopedia, Volume 15: Tournely-Zwirner