Christian Franz of Brunswick-Wolfenbüttel (1639-1639) (1639–1639) Parents Augustus the Younger, Duke of Brunswick-Lüneburg Duchess Elisabeth Sophie of Mecklenburg Children Siblings Ferdinand Albert I, Duke of Brunswick-Lüneburg Rudolph Augustus, Duke of Brunswick-Lüneburg Anthony Ulrich, Duke of Brunswick-Wolfenbüttel Henry August of Brunswick-Wolfenbüttel Sibylle Ursula of Brunswick-Wolfenbüttel Marie Elisabeth of Brunswick-Wolfenbüttel Clara Augusta Brunswick-Luneburg