War of the Oranges
In 1801, Leonor's father, João de Almeida Portugal, 2nd Marquis of Alorna, died. Her brother, Pedro de Almeida Portugal, succeeded her father as Marquis of Alorna. Grief-stricken, Leonor took her family to London, where she stayed in the palace of Domingos de Sousa Coutinho, Count of Funchal, the Portuguese ambassador to the United Kingdom. Upon arrival, Leonor received news that the War of the Oranges had erupted.