I'm looking into my brother-in-law's family history. He is the grandson of Armando Capaldi. Armando was the son of Antonio Capaldi and Attilia Vacca. They were married in Glasgow in 1904, and emigrated to the US in 1906. Antonio's birthplace was Filignano, in the province of Iscernia (formerly Iscernia e Abruzzi) in the region of Molise. So far, that's all I know.
I'll keep you posted if I find out more.