MC
Mary Carroll — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Carroll across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1882), then head of a 7-person household.
Age 58
b. ~1882
Female
Spouse
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Carroll |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1882 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Alice Clarkin | Daughter | — | 31 | ~1909 |
| Michael Carroll | Head | — | 58 | ~1882 |
| Albert Carroll | Son | — | 20 | ~1920 |
| John Carroll | Son | — | 29 | ~1911 |
| Henry Carroll | Son | — | 25 | ~1915 |
| Joseph Carroll | Son | — | 23 | ~1917 |
| Mary Carroll | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Suffolk, Massachusetts
Other, age 37
Suffolk, Massachusetts · implied b. ~1883 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Mary G |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | England |
| Year of Immigration | 1900 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | England |
| Occupation | Ward Helper |
| Industry | Hospital |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1930
Suffolk, Massachusetts
Other, age 47
Suffolk, Massachusetts · implied b. ~1883 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Mary E |
| Relationship to Head | Niece |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Single |
| Birthplace | England |
| Naturalization Status | Un |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | England |
| Occupation | Housekeeper |
| Industry | at Home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Essex-County, Massachusetts
Spouse, age 58
Essex-County, Massachusetts · implied b. ~1882 — 7 household members
| Surname | Carroll |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Naturalization Status | Naturalized |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Carroll 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 Carroll
Spouse · 1940 · age 58 · b. ~1882 · 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-t0627-01697-00386)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Linkus | 22 | Daughter | Office Clerk | Massachusetts |
| 2 | John Klimaszyk | 50 | Head | Machinist | Poland |
| 3 | Blanche Klimaszyk | 48 | Wife | — | Poland |
| 4 | Eugenia Klimaszyk | 23 | Daughter | Secretary | Massachusetts |
| 5 | Agnes Klimaszyk | 20 | Daughter | Secretary | Massachusetts |
| 6 | Edward Klimaszyk | 18 | Son | — | Massachusetts |
| 7 | Alley Le Brasseur | 30 | Head | Carpenter | Maine |
| 8 | Frances Le Brasseur | 34 | Wife | — | Pennsylvania |
| 9 | Gerald Le Brasseur | 4 | Son | — | Massachusetts |
| 10 | Jasper Marinowski | 43 | Head | Laster | Russia |
| 11 | Helen Marinowski | 14 | Daughter | — | Massachusetts |
| 12 | Veronica Marinowski | 5 | Daughter | — | Massachusetts |
| 13 | David W Bray | 38 | Head | Watchman | Maine |
| 14 | Margaret Bray | 37 | Wife | — | Pennsylvania |
| 15 | Mary Bray | 11 | Daughter | — | Texas |
| 16 | David Jr Bray | 9 | Son | — | Massachusetts |
| 17 | Michael Carroll | 58 | Head | Electrician | Free State |
| 18 | Mary Carroll THIS PERSON | 58 | Wife | — | England |
| 19 | John Carroll | 29 | Son | Electrician'S Helper | Massachusetts |
| 20 | Henry Carroll | 25 | Son | New Worker | Massachusetts |
| 21 | Joseph Carroll | 23 | Son | Carpenters Helper | Massachusetts |
| 22 | Albert Carroll | 20 | Son | Machine Operator | Massachusetts |
| 23 | Alice Clarkin | 31 | Daughter | Store Clerk | Massachusetts |
| 24 | Anthony Swirka | 54 | Head | Repair Machinist | Lithuania |
| 25 | Mary Swirka | 48 | Wife | — | Lithuania |
| 26 | Ferdinand Swirka | 21 | Son | Floor Boy | Michigan |
| 27 | Valentine Swirka | 19 | Daughter | Trimmer | Michigan |
| 28 | Alphonse Swirka | 17 | Son | Odd Jobs | Michigan |
| 29 | Roman Swirka | 14 | Son | — | Massachusetts |
| 30 | Edward Swirka | 11 | Son | — | Massachusetts |
| 31 | Lillian Swirka | 9 | Daughter | — | Massachusetts |
| 32 | Charles Swirka | 8 | Son | — | Massachusetts |
| 33 | Patrick Curley | 35 | Head | Government Inspector | Massachusetts |
| 34 | Alice Curley | 33 | Wife | — | Massachusetts |
| 35 | Joseph Curley | 8 | Son | — | Massachusetts |
| 36 | Robert Curley | 7 | Son | — | Massachusetts |
| 37 | Patricia Curley | 5 | Daughter | — | Massachusetts |
| 38 | Herbert Huber | 40 | Head | Marine Engineer | Massachusetts |
| 39 | Helen Huber | 33 | Wife | Winder | Massachusetts |
| 40 | Barbara Huber | 8 | Daughter | — | 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)