In 1855, on the occasion of her engagement to her cousin Placido Gabrielli [it], prince of Prossedi, her father, the famed ornithologist, named the emerald dove of the Nicobar Islands in her honour.

[1] A few months later, on 1 February 1856, Augusta and Placido (himself the son of princess Charlotte Bonaparte Gabrielli) celebrated their marriage in the Chapelle Impériale of the Palais des Tuileries in Paris.

In the newly-proclaimed Italian capital Augusta was renown for her dedication to the poor and for the charity fairs she organized at her residence at Palazzo di Monte Giordano.

She also worked at the catalogue of her husband's family painting collections and decorated several rooms of her Roman residence: when a new tower was added to the palace, Placido dedicated it to her as Torre Augusta.

When the building was sold in 1888, most furnishings were donated to the couple's cousin Giuseppe Primoli and are now included in the collections of the Museo Napoleonico in Rome.