She is the granddaughter of Giovanni Agnelli (1866–1945), founder of the Italian automobile maker Fiat S.p.A.[1] Agnelli married Ranieri Campello della Spina, Count of Campello sul Clitunno (1908–1959), with whom she had four children: Virginia (1954), Argenta (1955), Cintia (1956), and Bernardino (1958).

Widowed after Ranieri's death in 1959, she later married Count Pio Teodorani-Fabbri (1924–2022) in 1964, with whom she had her son Eduardo (1965).

She reportedly won without attending any campaign rallies, obtaining 850 votes from a pool of 1,200 voters.

[4] Her dead husband's son, Rovero, followed in her footsteps, becoming mayor of Campello sul Clitunno between 1987 and 1990.

[5] Agnelli's horse Woodland, ridden by Alessandro Argenton, won the silver medal in the Equestrian at the 1972 Summer Olympics – Individual eventing in Munich.