You didn't provide age, so don't know if this is right person.
12-31-1964 Ettore S GRASSI m. Mrs Mary L LATIMER/MAULDIN, Santa Clara CA [don't know which is maiden name] 1-22-1977 Steven E GRASSI m. Susan Burk PEVY, Reno NV
Ettore S GRASSI b 11-15-1919; d as Steven E GRASSI 11-2-2006 Reno NV; Susan B GRASSI 7-5-1931/9-20-2008 Reno NV
Ettore lived several places...1972 San Jose; 1989 Tahoe City CA; Susanville CA; Crescent City CA; Reno NV
CA Birth Index does not list any GRASSI ch with mom's maiden name of LATIMER/MAULDIN.Susan may have had ch from previous marriage...she was 46 when she m Ettore, so doubt any ch from this union. He is listed on SSDI as GRASSIE Maybe you can locate an obit in the Reno Public Library.
Birthdates are listed on public records, and he flip flops his name.