Frederick Ulrich, Duke of Brunswick-Lüneburg, was prince of Wolfenbüttel from 1613 until his death.
Background
Frederick Ulrich was the son of Duke Henry Julius of Brunswick-Wolfenbüttel (1564-1613) and his second wife Princess Elisabeth of Denmark (1573-1625), the eldest daughter of King Frederick II of Denmark. Frederick studied at the universities of Helmstedt and Tübingen, and became ruling duke after the death of his father in 1613.
Career
In 1615, Frederick became involved in a war with the City of Brunswick, which was reluctant to recognize his overlordship. Because of the bad situation of the state, Christian had Frederick take control of the government again. The duke lost most of his territory during this time.
He died after an accident in 1634.
Membership
Fruitbearing Society]
With the help of the states" nobility, he managed to regain control. The members of the Streithorst government fled the state.