Don Grady
Birth Name: Don Louis Agrati
Date of Birth: June 8, 1944
Place of Birth: San Diego, California, United States
Date of Death: June 27, 2012
Place of Death: Thousand Oaks, California, U.S.
Ethnicity: Italian
Don Grady was an American actor, composer, and musician. He was known for his roles in Mickey Mouse Mouseketeers and on the show My Three Sons.
Don was the son of Mary, a talent agent, and Lou Anthony Agrati, a sausage maker. His sister was actress Lanita/Lani O’Grady. He was raised in Lafayette, California. Don was married to Virginia “Ginny” Lewsader, until his death, with whom he had two children.
Don’s paternal grandfather was Battista Pasquale Agrati (the son of Luigi Agrati and Rosa Agazzi). Battista was born in Osio Sotto, Bergamo, Lombardy, Italy.
Don’s paternal grandmother was Angelina Santa Tironi (the daughter of Antonio Tironi and Anna Gorla). Angelina was born in Osio Sotto.
Don’s maternal grandfather was Giuseppe Antonio Castellino (the son of Santino Castellino and Modesta Dormetta). Giuseppe was an Italian emigrant, from Ceva, Cuneo, Piedmont.
Don’s maternal grandmother was named Rosa C. Grasso. Rosa was born in Nice, France, to Italian parents.
Source: Genealogy of Don Grady – https://www.familysearch.org
That is a sophisticated Anglicization