Costa Cabral was prime minister from 1842 to 1846. However, in 1846, a famine caused a popular uprising known as the
Revolution of Maria da Fonte. This caused Costa Cabral to flee to Spain and, shortly after, his wife and four children joined him in
Madrid. The government then appointed him ambassador to Madrid and their last son was born in that city. They returned to Lisbon in 1849 and her husband was prime minister again until 1851, but he never achieved the same power that he had earlier. In 1859, he went with his family to be ambassador to Brazil, staying only two years. They then effectively retired to Tomar, where Read planted grapes, recruited an
oenologist from France, and produced a high-quality wine. In 1870, Costa Cabral was appointed as Portugal's ambassador to the
Holy See in
Rome, at that time the country's most prestigious diplomatic appointment. ==Death==