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Margaret Mahoney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Margaret Mahoney across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1908), then head of a 6-person household.
Age 32
b. ~1908
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Mahoney |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1908 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Winslow Mahoney | Son | — | 10 | ~1930 |
| Edward Mahoney | Head | — | 35 | ~1905 |
| Margaret Mahoney | Spouse | — | 32 | ~1908 |
| Mary Mahoney | Daughter | — | 9 | ~1931 |
| John Mahoney | Son | — | 1 | ~1939 |
| James Dolan | Other | — | 56 | ~1884 |
Census Appearances
1920
Essex, Massachusetts
Other, age 11
Essex, Massachusetts · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Margaret G. |
| Relationship to Head | Niece |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Other, age 21
Suffolk, Massachusetts · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Margaret |
| Relationship to Head | Cousin |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Maker Helper |
| Industry | Private Home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Spouse, age 32
Suffolk-County, Massachusetts · implied b. ~1908 — 6 household members
| Surname | Mahoney |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 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 3 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Mahoney
Spouse · 1940 · age 32 · b. ~1908 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01666-00363)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen O'Reilly | 16 | Daughter | — | Massachusetts |
| 42 | Catherine O'Reilly | 14 | Daughter | — | Massachusetts |
| 43 | Lorraine O'Reilly | 6 | Daughter | — | Massachusetts |
| 44 | Elizabeth Purnis | 65 | Head | — | Eire |
| 45 | James R. Purnis | 34 | Son | Machine Operator | Massachusetts |
| 46 | Louise Spencer | 70 | Lodger | Maid | Canada-Eng |
| 47 | Daniel G. Mossberg | 34 | Head | Chauffeur | Massachusetts |
| 48 | Mary Mossberg | 32 | Wife | — | Massachusetts |
| 49 | Patricia Mossberg | 3 | Daughter | — | Massachusetts |
| 50 | Anne Mossberg | 1 | Daughter | — | Massachusetts |
| 51 | Edward L. Thomas | 53 | Head | Night Watchman | Canada-Eng |
| 52 | Eva M. Thomas | 48 | Wife | — | Rhode Island |
| 53 | Edward F. Thomas | 17 | Son | — | Massachusetts |
| 54 | John E. Thomas | 16 | Son | — | Massachusetts |
| 55 | Margaret J. Thomas | 11 | Daughter | — | Massachusetts |
| 56 | Shirley E. Thomas | 8 | Daughter | — | Massachusetts |
| 57 | Paul R. Thomas | 6 | Son | — | Massachusetts |
| 58 | Walter Penney | 33 | Head | Watchman | Maine |
| 59 | Doris S. Penney | 31 | Wife | — | Massachusetts |
| 60 | Lloyd Penney | 8 | Son | — | Massachusetts |
| 61 | Jean L. Penney | 6 | Daughter | — | Massachusetts |
| 62 | Carol A. Penney | 2 | Daughter | — | Massachusetts |
| 63 | Gertrude Whittier | 78 | Lodger | Watchman | Massachusetts |
| 64 | Whittier | None | — | — | — |
| 65 | Edward J. Mahoney | 35 | Head | Truck Driver | Indiana |
| 66 | Margaret Mahoney THIS PERSON | 32 | Wife | — | Massachusetts |
| 67 | Winslow Mahoney | 10 | Son | — | Massachusetts |
| 68 | Mary Mahoney | 9 | Daughter | — | Massachusetts |
| 69 | John Mahoney | 1 | Son | — | Massachusetts |
| 70 | James Dolan | 56 | Lodger | — | Massachusetts |
| 71 | Theodore Winters | 39 | Head | Sheet Metal Worker | Massachusetts |
| 72 | Margaret Winters | 33 | Wife | — | Massachusetts |
| 73 | Theodore Winters | 1 | Son | — | Massachusetts |
| 74 | — | None | — | — | — |
| 75 | Mary E. Fitzgerald | 67 | Head | — | Eire |
| 76 | Martin J. Fitzgerald | 30 | Daughter | Stenographer | Massachusetts |
| 77 | John J. Casey | 58 | Head | Collector | Massachusetts |
| 78 | Anna Casey | 48 | Wife | — | Eire |
| 79 | Anna Casey | 24 | Daughter | — | Massachusetts |
| 80 | John Casey | 13 | Son | — | Massachusetts |
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)