Who is Antonio from War in Val D'Orcia, 1943-1944 and what is their importance?

Antonio is the author's husband. While their relationship is never discussed in any depth, he is portrayed as being just as committed to the humanist cause as the Marchesa, and as an active participant in the day-to-day activities of the Val d'Orcia community. He is also portrayed as being actively involved in the larger, ongoing, evolving socio-political workings of the non-Fascist Italian community, workings determined to ensure that Italy, as a country and as a culture, survives.