peeress

A noblewoman.

A woman who holds a peerage by descent or appointment.

A woman who holds a title by association, as the wife or widow of a peer.

The consort of a peer; a woman ennobled by descent, by creation, or by marriage.

The wife of a peer; a woman ennobled in her own right, or by right of marriage.

A noblewoman married to a peer

A woman holding a noble title in her own right.

a woman of the peerage in Britain