Ottora Haas-Heye German noblewoman, mother of Rosita Spencer-Churchill, Duchess of Marlborough (1910-2001) (1910–2001) Parents Tora zu Eulenburg Otto Haas-Heye Children Rosita Spencer-Churchill, Duchess of Marlborough Gustaf Douglas Princess Elisabeth, Duchess in Bavaria Siblings Libertas Schulze-Boysen Johannes Haas-Heye Partners Count Carl Douglas