Giovanni Magherini was born in Figline Valdarno in 1852. A man of deep culture and particularly inclined to studies of historical research, researcher and lover of the memories of Città di Castello, which he considered his second homeland, he married Countess Maddalena Libri Graziani, of the Counts of Florence and of the Counts Graziani of Città di Castello, acquiring the title and the surname.
The studies and research of Giovanni Magherini Graziani turned mainly to the history of art. He published a monograph on Masaccio and one on Raphael, as well as an "Artistic History of Città di Castello". He was also interested in local history and popular traditions giving to the press, between 1890 and 1900, a "History of Città di Castello" in three volumes and, in 1910, the collection of legends and popular stories of the Valdarno tradition "In Valdarno (Tuscan tales) ".
A lover of theater, in 1894 he had a comedy entitled "Who Stops the Dog Who Lies" at the Teatro degli Illuminati in Città di Castello. He was also the promoter of the Philharmonic Society and of the Mutual Relief Society of Città di Castello. He died in 1924.