Concubine

In 5,000,000,000, Jabe wondered if Rose Tyler was the Ninth Doctor's concubine. (TV: The End of the World)

Queen Mary I called Elizabeth "the concubine's daughter." (AUDIO: The Marian Conspiracy)

One corrupt Bishop who was present at the First Auction in Heaven had several concubines leashed to his belt. (PROSE: Going Once, Going Twice)