1900 Census for Joseph Verrier is attached - they are living at 73 Broad St Hudson, MA and Diagneault were living at 80 Broad St.

1910 Census - Hudson MA

Name: Joseph O Verrier
Birthplace: Canada French
Relationship to Head of Household: Self
Residence: Hudson, Middlesex, Massachusetts
Marital Status: Married
Race : White
Gender: Male
Immigration Year: 1867
Father's Birthplace: Canada French
Mother's Birthplace: Canada French
Family Number: 373
Page Number: 16
Household Gender Age
Joseph O Verrier M 43y
Spouse Oglaie Verrier F 42y
Child Harry Verrier M 7y

1920 Census - no Viola - wife's name is wrong(which can happen, depends on how someone transcribes it, or takes it down) but same Joseph O Verrier -

Name: Joseph O Verrier
Residence: Hudson Town, Middlesex, Massachusetts
Estimated Birth Year: 1867
Age: 53
Birthplace: Canada
Relationship to Head of Household: Self
Gender: Male
Race: White
Marital Status: Married
Father's Birthplace:
Mother's Birthplace:
Film Number: 1820710
Digital Folder Number: 4301107
Image Number: 00444
Sheet Number: 11
Household Gender Age
Joseph O Verrier M 53y
Spouse Lora Verrier F 51y

1900 Census - Convent at 57 Cabot St Holyoke
attached - Viola is a servant(housework) she was born in 1881 and came to US in 1892 and if you look at Joseph Verrier for 1900 his immigration year was 1875 so to me she can't be the daughter of Joseph and Oglaine.

Do you have any more info on her?

Margaret

Edit: I attached the wrong info - here's correct