From the OHS PC Database, derived from A Guide to North America Organ Builders by David H. Fox (Organ Historical Society, 1991). -- Italian

In 1940, three brothers, Alessio, Antonio, and Giuseppe Ruffatti, founded the firm of “Famiglia Artigiana Fratelli Ruffatti” — Ruffatti Brothers, Family of Artisans — the full and original name of the company, which remains unchanged today. -- from "origins", ruffatti.com

Antonio Ruffatti, co-founder (1912-2001)
Piero Ruffatti (became a partner in the firm at age 25)
Francesco Ruffatti (became a partner in the firm at age 23)
Michela Ruffatti (She has been working at Fratelli Ruffatti since 2004, where she concentrates on design, and supervision of manufacturing.)