Mothers last name listed as McCarty.

Cemetery records lists this as a cremation.

1940 United States Federal Census

VIEW IMAGE
VIEW RECORD
Name Helen E Mahan
Respondent Yes
Age 47
Estimated Birth Year abt 1893
Gender Female
Race White
Birthplace Massachusetts
Marital Status Widowed
Relation to Head of House Head
Home in 1940 Boston, Suffolk, Massachusetts
Street Peterborough Street
Inferred Residence in 1935 Boston, Suffolk, Massachusetts
Residence in 1935 Same Place
Sheet Number 61B
Occupation Bookkeeper
House Owned or Rented Rented
Value of Home or Monthly Rental if Rented 47.50
Attended School or College No
Highest Grade Completed College, 1st year
Hours Worked Week Prior to Census 40
Class of Worker Wage or salary worker in private work
Weeks Worked in 1939 0
Income 0
Income Other Sources Yes
Household Members
Name Age
Helen E Mahan 47
George A Mahan 29
William Higgins 49

1930 United States Federal Census Record
about Helen E Mahan
Name: Helen E Mahan
Age: 38
Estimated birth year: abt 1892
Relation to head-of-house: Wife
Spouse's Name: George J Mahan
Home in 1930: Boston, Suffolk, Massachusetts
Son George A. Mahan also listed.

1920 United States Federal Census Record
about Helen J Mahan
Name: Helen J Mahan
Age: 26 years
Estimated birth year: abt 1894
Birthplace: Massachusetts
Race: White
Home in 1920: Boston Ward 17, Suffolk, Massachusetts
Sex: Female
Marital status: Married
Relation to Head of House: Wife
Able to read: Yes
Able to Write: Yes
Mother's Birth Place: Massachusetts
Father's Birth Place: England
Image: 377
Husband George and son George also listed.
Living next door are possible parents: Alfred and Ellen Lakeman.

1910 United States Federal Census Record
about Alfred Lakeman
Name: Alfred Lakeman
Age in 1910: 46
Estimated birth year: abt 1864
Home in 1910: 24-Wd Boston, Suffolk, Massachusetts
Neighbors: View Results
Race: White
Gender: Male
Daughter: Helen listed (age 16)