Pazos and Traverso lived in 1920 in San Juan, San Benito, CA.
Alejandro Pazos, b. CA, 46, head, single, no occupation.
Isabel Traverso, b. CA, 30, divorced, cook ranch.
Carl Traverso, b. CA, 5.
Marjorie Traverso, b. CA, 8/12ths.
Also three boarders.
I found a Carl Pazos living in 1930 in Hollister, San Benito, CA.
Marie Vargas, head, B. CA, 74, widow, no occ.
Carl Pazos, grandson, b. CA, 15, single.
A Carl F. Pazos
Born: 6 Oct 1914
Died: 6 Feb 2007
He MIGHT have been living in Walnut Creek, Contra Costa Co., CA.
You can look for his obituary at cocohistory.org/obit.html .
If you live in California, contact the Contra Costa County Library, guides.ccclib.org/genealogy .
I didn't find anything else for the other family members.
I'd look for Alejandro and Isabel's marriage in San Benito Co. after the 1920 Census. Contact the County Clerk, sbcvote.us/clerk.htm . I don't know if they'll search every year from 1920 to 1930.
I'd look for Carl Traverso's birth cert at the Napa County Recorder, countyofnapa.org/Pages/Department.aspx?id=4294967365 . They will charge a fee even if they don't find his birth certificate.