MS
Mary Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Sullivan across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 5-person household.
Age 43
b. ~1897
Female
Spouse
Born: New Hampshire
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Mary T. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Newburyport City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Township / Ward | Newburyport City |
| Est. Birth Year | ~1897 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Sullivan | Daughter | — | 13 | ~1927 |
| John Sullivan | Head | — | 44 | ~1896 |
| Wm Sullivan | Son | — | 10 | ~1930 |
| John Sullivan | Son | — | 14 | ~1926 |
| Mary Sullivan | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Bristol, Massachusetts
Other, age 22
Bristol, Massachusetts · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Margaret J |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Massachusetts |
| Occupation | Teacher |
| Industry | School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1930
Essex, Massachusetts
Other, age 33
Essex, Massachusetts · implied b. ~1897 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Margaret F. |
| Relationship to Head | Roomer |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Massachusetts |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Essex-County, Massachusetts
Spouse, age 43
Essex-County, Massachusetts · implied b. ~1897 — 5 household members
| Surname | Sullivan |
| Given Name | Mary T. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Newburyport City |
| 1935 Residence (County) | Essex |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 Sullivan across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Sullivan
Spouse · 1940 · age 43 · b. ~1897 · 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
39 people indexed on this census page (nara:1940:m-t0627-01587-00098)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Geoffrey | 36 | Head | Barber | Massachusetts |
| 2 | Louise Geoffrey | 31 | Wife | — | Massachusetts |
| 3 | Annette Geoffrey | 2 | Daughter | — | Massachusetts |
| 4 | Doris G. Geoffrey | 1 | Daughter | — | Massachusetts |
| 5 | Martha Tompkins | 76 | Mother | — | Canada, Fr |
| 6 | Sarah Moreau | 43 | Sister-in-law | — | Massachusetts |
| 7 | Frank Deorocki | 49 | Head | Hatter | Poland |
| 8 | Sophie Deorocki | 44 | Wife | — | Poland |
| 9 | Stanley Deorocki | 22 | Son | Easter | Massachusetts |
| 10 | Mary A. Deorocki | 20 | Daughter | Marker | Massachusetts |
| 11 | Bernard A. Deorocki | 18 | Son | — | Massachusetts |
| 12 | Edward Klosowski | 25 | Boarder | Tanner | Massachusetts |
| 13 | Genevieve Klosowski | 23 | Wife | Rattler | Massachusetts |
| 15 | Stanislaus Danielucki | 55 | Head | Laster | Poland |
| 16 | Helen Danielucki | 55 | Wife | — | Poland |
| 17 | Louise Danielucki | 11 | Daughter | — | Massachusetts |
| 18 | John H. Smolski | 27 | Head | Laborer | Massachusetts |
| 19 | Marion Smolski | 25 | Wife | — | Massachusetts |
| 20 | Margaret Smolski | 2 | Daughter | — | Massachusetts |
| 21 | Louis Paradise | 68 | Head | — | Canada, Fr |
| 22 | Thyra G. Brown | 35 | Head | Ticket Seller | Wisconsin |
| 23 | Philip B. Brown | 13 | Son | — | Massachusetts |
| 24 | Henrietta Sojka | 30 | Head | Seamstress | Rhode Island |
| 25 | Edward Sojka | 10 | Son | — | Massachusetts |
| 26 | Jessie E. Rogers | 69 | Head | — | Ireland (Eire) |
| 27 | John A. Herlihy | 38 | Head | Last Puller | Massachusetts |
| 28 | Florence A. Herlihy | 44 | Wife | — | Massachusetts |
| 29 | Albert E. Tobin | 38 | Brother-in-law | Laborer | Massachusetts |
| 30 | John J. Sullivan | 44 | Head | Clammer | Massachusetts |
| 31 | Mary T. Sullivan THIS PERSON | 43 | Wife | — | New Hampshire |
| 32 | John Sullivan | 14 | Son | — | Massachusetts |
| 33 | Helen V. Sullivan | 13 | Daughter | — | Massachusetts |
| 34 | Wm. H. Sullivan | 10 | Son | — | Massachusetts |
| 35 | Arthur E. Hogan | 43 | Head | Fireman | Massachusetts |
| 36 | Regina Hogan | 36 | Wife | — | Maine |
| 37 | Jean E. Hogan | 8 | Daughter | — | Massachusetts |
| 38 | Arthur E. Hogan | 5 | Son | — | Massachusetts |
| 39 | Regina M. Hogan | 3 | Daughter | — | Massachusetts |
| 40 | Pearl Hunt | 33 | Head | Laborer | 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)