What is the name of this Argentine aviator of Italian, English, and Irish descent, who was the grandmother of Luciana Pedraza?
Luciana Pedraza: Luciana Pedraza (] ) is an Argentine actress and director. Luciana Pedraza:  She is married to American fellow actor Robert Duvall, and is the granddaughter of Argentine aviation pioneer Susana Ferrari Billinghurst. Susana Ferrari Billinghurst: Susana Ferrari Billinghurst (1914–1999) was an Argentine aviator of Italian, English, and Irish descent.
Susana Ferrari Billinghurst