The phrase "a mistress from" is correct and usable in written English.
It can be used in contexts where you are referring to a woman who is in a relationship with someone who is married or in a committed relationship, often implying a secretive or illicit nature.
Example: "He often spoke of a mistress from his past, a woman who had captivated him during his youth."
Alternatives: "a lover from" or "a paramour from".
"He had a mistress from the Basque country and asked her to live in a house at the back of his.
How can it be so easy to divert $1 million from wealthy donors to hide a mistress from your supporters and -- of course -- your dying wife?
Having a mistress from Italy or, even worse, from one's own town is damaging because it destabilizes the family balance not only in the sense of the relationship of the nuclear family but also the relationships of the clan.
And so the global financial elite have found their store of value — in a nude mistress from Paris.
Georgina Parkinson, a ballet mistress from the American Ballet Theatre, coached the actors in ballet.
But most lawsuits involve a wife's claim to recover apartments, cars or money from a mistress, a trend that has quickened as the Chinese become more sophisticated about their legal rights, he and others said.
A garden variety adulterer is actually getting something whether it's from a mistress a la John Edwards or random prostitutes a la Sen. David Vitter.
Concubines have limited rights of support from the man, and their offspring are publicly acknowledged as the man's children, albeit of lower status than children born by the official wife or wives; these legal rights distinguish a concubine from a mistress.
He was "systematically and copiously unfaithful", says Surya, and his marriage in 1928 did not stop him from frequenting nightclubs, brothels, orgies (his wife left him in 1934), nor from having a mistress, Colette Peignot, the model for many of his heroines.
My experience with founders of companies is that the company is not a mistress that takes them away from home and the family.
The practice of "keeping a second wife" (Bao- er- nai) or "hiring a mistress"—a man housing a mistress in a different location from his home has become increasingly common in China, especially among the rich and powerful [ 20– 23].
