Died March 4, 1893 Mariposa Gazette: CASTAGNETTO- In San Francisco, Feb. 22d, 1893, Joseph son of Jon and Elizabeth CASTAGNETTO, aged 22 years. The deceased was born in Bear Valley and spent his early years in that town.

San Francisco Call Newspaper Vital Records for 1893:
Castagnetto, John ... died in 1893 ... age 22 ... record no.: 1893D-806