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Mary Kelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Kelly across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 10-person household.
Age 54
b. ~1886
Female
Spouse
Born: Maine
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Kelly |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Haverhill City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Township / Ward | Haverhill City |
| Est. Birth Year | ~1886 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rita Kelly | Daughter | — | 21 | ~1919 |
| Catherine Kelly | Daughter | — | 19 | ~1921 |
| Elizabeth Kelly | Daughter | — | 26 | ~1914 |
| James Kelly | Head | — | 63 | ~1877 |
| Francis Kelly | Son | — | 11 | ~1929 |
| Joseph Kelly | Son | — | 17 | ~1923 |
| Richard Kelly | Son | — | 15 | ~1925 |
| Paul Kelly | Son | — | 28 | ~1912 |
| James Kelly | Son | — | 24 | ~1916 |
| Mary Kelly | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Essex, Massachusetts
Spouse, age 33
Essex, Massachusetts · implied b. ~1887 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelley |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Maine |
| Father's Birthplace | Canada |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
Spouse, age 44
Essex, Massachusetts · implied b. ~1886 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelley |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Canada |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Essex-County, Massachusetts
Spouse, age 54
Essex-County, Massachusetts · implied b. ~1886 — 10 household members
| Surname | Kelly |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Haverhill City |
| 1935 Residence (County) | Essex |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 Mary Kelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Kelly
Spouse · 1940 · age 54 · b. ~1886 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01581-00202)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James T Moynihan | 34 | Son | Laborer | Mass |
| 2 | Mary A Moynihan | 32 | Daughter | Stitcher | Mass |
| 3 | Lloyd M Howard | 27 | Head | Salesman & Collector | Mass |
| 4 | Elizabeth Howard | 26 | Wife | Cementer | Mass |
| 5 | Lloyd Jr Howard | 3 | Son | — | New Hampshire |
| 6 | Annie F Simpson | 65 | Head | Stitching | Virginia |
| 7 | Patrick J Costello | 59 | Head | Cutter | Eire |
| 8 | Beatrice E Costello | 51 | Wife | — | England |
| 9 | William Clohecy | 88 | Head | — | Mass |
| 10 | Frank Herbin | 80 | Lodger | — | Belgium |
| 11 | Louis Witham | 55 | Head | Switch Tender | Mass |
| 12 | Catherine Witham | 54 | Wife | — | Mass |
| 13 | J Howard Witham | 21 | Son | New Worker | Mass |
| 14 | George Thompson | 71 | Head | — | Kentucky |
| 15 | Annie M Thompson | 68 | Wife | — | Eire |
| 16 | Doris Thompson | 12 | Grand Daughter | — | Mass |
| 17 | Agnes Joyce | 12 | Lodger | — | Mass |
| 18 | Henry Tetreault | 58 | Head | Woodheelmaker | Mass |
| 19 | Susan Tetreault | 23 | Wife | — | England |
| 20 | Donald Oatman | 37 | Step Son | Blocker | Mass |
| 21 | Leon Cody | 45 | Head | Stitcher | New Hampshire |
| 22 | Irene T Cody | 41 | Wife | — | Mass |
| 23 | Arthur Cody | 17 | Son | — | Mass |
| 24 | Joan Cody | 13 | Daughter | — | Mass |
| 25 | Dorothy Cody | 10 | Daughter | — | Mass |
| 26 | Carl Cody | 8 | Son | — | Mass |
| 27 | Irene Cody | 6 | Daughter | — | Mass |
| 28 | Mary L Cody | 5 | Daughter | — | Mass |
| 29 | Barbara Cody | 3 | Daughter | — | Mass |
| 30 | James F Kelly | 63 | Head | Cutter | Eire |
| 31 | Mary A Kelly THIS PERSON | 54 | Wife | — | Maine |
| 32 | Paul Kelly | 28 | Son | Cost Supervisor | Mass |
| 33 | Elizabeth Kelly | 26 | Daughter | Sales Girl | Mass |
| 34 | James Kelly | 24 | Son | Utility Man | Mass |
| 35 | Rita Kelly | 21 | Daughter | Candy Clerk | Mass |
| 36 | Catherine Kelly | 19 | Daughter | — | Mass |
| 37 | Joseph Kelly | 17 | Son | — | Mass |
| 38 | Richard Kelly | 15 | Son | — | Mass |
| 39 | Francis Kelly | 11 | Son | — | Mass |
| 40 | Ernest Pismondan | 46 | Head | Janitor | Mass |
Related Census Records
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)