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Mary Lennon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bronx-County, New York
Our Model Tree links this Mary Lennon across the 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1906), then head of a 6-person household.
Age 34
b. ~1906
Female
Spouse
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bronx-County, New York |
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Bronx |
| 1935 Residence (County) | Bronx |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birthplace (normalized) | irish free state |
| Township / Ward | Bronx |
| Est. Birth Year | ~1906 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lennon | Spouse | — | 34 | ~1906 |
| John Lennon | Head | — | 36 | ~1904 |
| Anna Lennon | Daughter | — | 8 | ~1932 |
| John Lennon | Son | — | 6 | ~1934 |
| Barbara Lennon | Daughter | — | 4 | ~1936 |
| Kathleen Lennon | Daughter | — | 2 | ~1938 |
Census Appearances
1930
Bx, New …
Spouse, age 23
Bx, New York · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lennon |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Un |
| Year of Immigration | 1925 |
| Age at First Marriage | 20 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birthplace (normalized) | irish free state |
1940
Bronx-County, New …
Spouse, age 34
Bronx-County, New York · implied b. ~1906 — 6 household members
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Bronx |
| 1935 Residence (County) | Bronx |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birthplace (normalized) | irish free state |
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 Lennon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Lennon
Spouse · 1940 · age 34 · b. ~1906 · New York
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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 — Bronx-County, New York
Open full size
1940 US Federal Census — Bronx-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02462-00306)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Cream | 6 | Daughter | — | New York |
| 2 | Anna Cream | 4 | Daughter | — | New York |
| 3 | Andrew Cream | 1 | Son | — | New York |
| 4 | John Comefry | 45 | Head | Laborer | Irish Free State |
| 5 | Anna Comefry | 40 | Wife | — | Irish Free State |
| 6 | John Comefry | 15 | Son | — | New York |
| 7 | Ellen Comefry | 13 | Daughter | — | New York |
| 8 | Rose Anne Comefry | 11 | Daughter | — | New York |
| 9 | Mary Comefry | 9 | Daughter | — | New York |
| 10 | Margaret Comefry | 2 | Daughter | — | New York |
| 11 | James Regan | 59 | Head | — | New York |
| 12 | Catherine Regan | 55 | Wife | — | New York |
| 13 | Margaret Regan | 19 | Daughter | Nursemaid | New York |
| 14 | James Regan | 17 | Son | — | New York |
| 15 | Donald Regan | 15 | Son | — | New York |
| 16 | Edward Regan | 13 | Son | — | New York |
| 17 | Mabel Karkula | 47 | Head | — | New York |
| 18 | Harold Karkula | 19 | Son | Factory Hand | New York |
| 19 | Dorothy Karkula | 18 | Daughter | — | New York |
| 20 | Lorraine Karkula | 15 | Daughter | — | New York |
| 21 | Mabel Karkula | 14 | Daughter | — | New York |
| 22 | Doris Karkula | 13 | Daughter | — | New York |
| 23 | Genevieve Karkula | 8 | Daughter | — | New York |
| 24 | Lillian Karkula | 5 | Daughter | — | New York |
| 25 | Alfonso Marciante | 31 | Head | Barber | New York |
| 26 | Anna Marciante | 31 | Wife | — | Illinois |
| 27 | Marie Marciante | 9 | Daughter | — | New York |
| 28 | Louis Marciante | 8 | Son | — | New York |
| 29 | Carmelo Marciante | 6 | Son | — | New York |
| 30 | Robert Marciante | 0 | Son | — | New York |
| 31 | Arthur Boucher | 38 | Head | Truckman | Canada Fr. |
| 32 | Irene Boucher | 38 | Wife | — | Massachusetts |
| 33 | Yvette Boucher | 5 | Daughter | — | New York |
| 34 | Roger Boucher | 1 | Son | — | New York |
| 35 | John Lennon | 36 | Head | Ho Sand Hog | Irish Free State |
| 36 | Mary Lennon THIS PERSON | 34 | Wife | — | Irish Free State |
| 37 | Anna Lennon | 8 | Daughter | — | New York |
| 38 | John Lennon | 6 | Son | — | New York |
| 39 | Barbara Lennon | 4 | Daughter | — | New York |
| 40 | Kathleen Lennon | 2 | Daughter | — | New York |
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)