Amadeo Peter Giannini was born May 6, 1870, in San Jose, California to Italian immigrant parents. He was the first son of Luigi Giannini and Virginia Giannini. Luigi Giannini immigrated to the United States from Favale di Malvaro near Genoa, Liguria in the Kingdom of Sardinia (later part of Italy) to prospect in response to the California Gold Rush of 1849. Luigi continued in gold during the 1860s and returned to Italy in 1869 to marry Virginia, bringing her to the US and settling in San Jose. Luigi Giannini purchased a 40-acre farm at Alviso in 1872 and grew fruits and vegetables for sale. Four years later Luigi Giannini was fatally shot by an employee over a pay dispute. His widow Virginia, with two children and pregnant with a third child, took over operation of the produce business. In 1880, Virginia married Lorenzo Scatena (1859–1930) who began L. Scatena & Co.