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Margaret Mahoney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Worcester-County, Massachusetts
Our Model Tree links this Margaret Mahoney across the 1920, 1930 and 1940 US Censuses in Worcester-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Margaret — first a daughter (b.~1915), then head of a 9-person household.
Age 25
b. ~1915
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Worcester-County, Massachusetts |
| Surname | Mahoney |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Additional Details | |
| Hours Worked | 13 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Worcester City |
| Est. Birth Year | ~1915 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| William Mahoney | Son | — | 23 | ~1917 |
| Margaret Mahoney | Spouse | — | 52 | ~1888 |
| Joseph Mahoney | Son | — | 11 | ~1929 |
| John Mahoney | Son | — | 27 | ~1913 |
| Ann Mahoney | Daughter | — | 14 | ~1926 |
| Margaret Mahoney | Daughter | — | 25 | ~1915 |
| Georgianna Mullin | Other | — | 76 | ~1864 |
| Mary Mahoney | Daughter | — | 18 | ~1922 |
| John Mahoney | Head | — | 57 | ~1883 |
Census Appearances
1920
Worcester, Massachusetts
Daughter, age 5
Worcester, Massachusetts · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Worcester, Massachusetts
Daughter, age 15
Worcester, Massachusetts · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Worcester-County, Massachusetts
Daughter, age 25
Worcester-County, Massachusetts · implied b. ~1915 — 9 household members
| Surname | Mahoney |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Hours Worked | 13 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Margaret Mahoney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mahoney (~0.92 confidence) and mother Margaret Mahoney (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mahoney
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Margaret Mahoney
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Mahoney
Daughter · 1940 · age 25 · b. ~1915 · Massachusetts
★ You are viewing this record
Sibling
Joseph Mahoney
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Mahoney
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mahoney
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mahoney
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mahoney
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Worcester-County, Massachusetts
Open full size
1940 US Federal Census — Worcester-County, Massachusetts
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01713-00170)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Setrak Bagdasarian | 59 | Head | Manager | Asiatic Turkey |
| 2 | Agnes Bagdasarian | 46 | Wife | — | Asiatic Turkey |
| 3 | Barkev Bagdasarian | 30 | Son | President Instructor | Massachusetts |
| 4 | Aznev Bagdasarian | 26 | Daughter | Clerk | Massachusetts |
| 5 | Arthur Casey | 28 | Head | — | Massachusetts |
| 6 | Gertrude Casey | 21 | Wife | — | Massachusetts |
| 7 | Forest Greene | 33 | Head | Wholesale Salesman | Indiana |
| 8 | Mary Greene | 28 | Wife | — | Massachusetts |
| 9 | Barbara Greene | 4 | Daughter | — | — |
| 10 | John Mahoney | 57 | Head | Clerk | Massachusetts |
| 11 | Margaret Mahoney | 52 | Wife | — | Massachusetts |
| 12 | John Jr. Mahoney | 27 | Son | Cable Operator | Massachusetts |
| 13 | Margaret Mahoney THIS PERSON | 25 | Daughter | — | Massachusetts |
| 14 | William Mahoney | 23 | Son | Asst. Manager | Massachusetts |
| 15 | Mary Mahoney | 18 | Daughter | — | Massachusetts |
| 16 | Ann Mahoney | 14 | Daughter | — | Massachusetts |
| 17 | Joseph Mahoney | 11 | Son | — | Massachusetts |
| 18 | Georgianna Mullin | 76 | Mother-in-law | — | Massachusetts |
| 19 | Herman Rawson | 73 | Head | — | Maine |
| 20 | Emma Sheldon | 82 | Sister | — | New Hampshire |
| 21 | Mabel Sheldon | 41 | Niece | Elementary Teacher | Massachusetts |
| 22 | Percy Woodward | 48 | Head | Broker | England |
| 23 | Judith Woodward | 47 | Wife | — | Massachusetts |
| 24 | Donald Woodward | 14 | Son | — | Massachusetts |
| 25 | P. Carl Swenson | 59 | Brother-in-law | — | Sweden |
| 26 | Carl G. Inman | 35 | Head | Foreman | Massachusetts |
| 27 | Sarah Inman | 32 | Wife | — | Nova Scotia |
| 28 | W. Hester Clark | 56 | Head | — | Massachusetts |
| 29 | Florence Clark | 54 | Sister | — | Massachusetts |
| 30 | Josephine Farnsworth | 62 | Head | — | Massachusetts |
| 31 | Lena French | 60 | Lodger | Bookkeeper | Massachusetts |
| 32 | Allen Hasselton | 31 | Head | Auditor | Massachusetts |
| 33 | Dorothy Hasselton | 31 | Wife | Secretary | Massachusetts |
| 34 | Florence Tuttle | 51 | Head | Bookkeeper | Massachusetts |
| 35 | Alice Ring | 50 | Lodger | — | Massachusetts |
| 36 | Mary E. Gaffney | 52 | Head | Graduate Registered Nurse | Massachusetts |
| 37 | Margaret Gaffney | 57 | Sister | Bookkeeper | Massachusetts |
Related Census Records
Pedigree Summary
Margaret + 5 siblings
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)