Ruth Longknife is a member of the Longknife Family

Ruth Maria Anne Brenda Longknife was born at the end of Unrelenting.

She goes with her parents as they attempt to negotiate an agreement between Vicky Peterwald and her Father, The Emperor and her Step-mother, The Empress. She is almost kidnapped by agents working for the Empress but her parents arrive in the nick of time to save her.