Princess Adelaide Sofia Amelia of Löwenstein-Wertheim-Rosenberg was born in Kleinheubach, near Miltenberg, Bavaria on 3 April 1831, Easter Sunday. She was a daughter of Constantine, Hereditary Prince of Löwenstein-Wertheim-Rosenberg (1802–1838), and Princess Agnes of Hohenlohe-Langenburg. Adelaide was four and half years old when her mother died and seven when she also lost her father.
Her maternal grandparents were Charles Louis, Prince of Hohenlohe-Langenburg and Countess Amalia of Solms-Baruth. Princess Adelaide belonged to the Löwenstein-Wertheim family, an originally morganatic branch of the House of Wittelsbach which was eventually elevated to princely status and mediatised in 1819.
He remained the senior male member of the Portuguese line of the House of Braganza, but he was never restored to the throne and it is disputed whether his descendants" dynastic rights were restored.
