sentences:  In parallel to her, Duke Charles had a string of other lovers simultaneously - his affairs to Charlotte Eckerman and Françoise-Éléonore Villain, among others, all took place when Slottsberg was his mistress.Charlotte Slottsberg herself also had several acknowledged lovers in parallel to Charles.Nevertheless, Slottsberg was referred to as the "Favorite Sultaness" of his "harem" and as someone he always returned to in the end, and Johan Magnus af Nordin referred to her as "the Concubiness, the deputy duchess and regentess etc".