Maria[1] Louisa La Valette was King Foltest of Temeria's mistress. It was widely rumored that both the baroness's children; son Boussy and daughter Anaïs, were not the old baron La Valette's offspring, but Foltest's.
In The Witcher 3: Wild HuntLouisa La Valette appears in The Witcher 3, having taken up residence in the Gildorf district of Novigrad. The emblem of the La Valette family still flies high outside her villa. She is accompanied by Morvran Voorhis.