I found that Adeline Benassi's husband was Thomas -- googling their names led me to http://files.usgwarchives.net/ca/contracosta/vitals/marriage...
which lists Adeline's maiden name as Merlo.
Using Merlo, I found the family in the 1920 US Census:
Name: Joseph Merllo
Birth Year: abt 1880
Home in 1920: Rodeo, Contra Costa, California
Immigration Year: 1905
Relation to Head of House: Head
Marital Status: Married
Spouse's Name: Marle Merllo
Household Members: Name Age
Joseph Merllo 40
Marle Merllo 42 [Marie]
Antone Merllo 13
Anna Merllo 12
Aurther Merllo 10
Adeline Merllo 2 [2 7/12]
From all this, I'm guessing that Marie Mostachetti Pangrazio married Joseph Merlo c. 1917.