Maria delle Grazie Brandolini d'Adda was born 6 August 1923 in Venice, Veneto, Italy to Carlo Brandolini d'Adda (1887-1942) and María José Álvares Pereira de Melo (1893-1947) and died 2018 of unspecified causes. She married Leonardo Arrivabene-Valenti-Gonzaga (1904-1971) 9 June 1948 in Cison di Valmarino, Province of Treviso, Veneto, Italy.
Children
| Name | Birth | Death | Joined with |
| Vera Arrivabene-Valenti-Gonzaga (1956-) | 14 June 1956 Rome, Italy | ||
| Venturina Arrivabene-Valenti-Gonzaga (1959-) | 19 December 1959 Rome, Italy | ||
| Gilberto Arrivabene-Valenti-Gonzaga (1961-) | 5 July 1961 Rome, Italy | Bianca di Savoia-Aosta (1966-) | |
Siblings