[1] His brother was the General Manuel Belgrano, member of the Primera Junta and hero in Argentine War of Independence.

[4] In 1806 and 1807, Belgrano participated with great heroism in defense of Buenos Aires against the English invaders (British invasions of the Río de la Plata).

[5] During May Revolution of 1810, he was invited to participate in the Cabildo abierto, voting in favor of the dismissal of the Viceroy Baltasar Hidalgo de Cisneros.

[6] Joseph Belgrano was promoted to lieutenant colonel in 1811, serving in the garrison of Buenos Aires until his retirement.

His sons, Domingo Estanislao Belgrano and José María Belgrano, were married to the sisters Fernanda and Margarita Rico Rueda,[8] great-granddaughters of Francisco Rueda, born in El Puerto de Santa María, and Juana de Piña, a natural daughter of Antonio Piña, born in Morón de la Frontera and María Nicolasa Jaime Merlos, belonging to the Merlos family.