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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 daughter (b.~1923), then head of a 7-person household.
Age 17
b. ~1923
Female
Daughter
Born: Scotland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bronx-County, New York |
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Bronx |
| Naturalization Status | Alien |
| Additional Details | |
| Occupation | File Clerk |
| Industry | Office Work |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Bronx |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | File Clerk |
| Township / Ward | New York City |
| Est. Birth Year | ~1923 |
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 |
|---|---|---|---|---|
| Thomas Lennon | Head | — | 48 | ~1892 |
| Thomas Lennon | Son | — | 13 | ~1927 |
| Eugene Lennon | Son | — | 11 | ~1929 |
| Helen Lennon | Daughter | — | 4 | ~1936 |
| Margaret Lennon | Spouse | — | 40 | ~1900 |
| Mary Lennon | Daughter | — | 17 | ~1923 |
| Robert Lennon | Son | — | 8 | ~1932 |
Census Appearances
1930
Bronx, New …
Daughter, age 7
Bronx, New York · implied b. ~1923 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lennon |
| Given Name | May |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1926 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Bronx-County, New …
Daughter, age 17
Bronx-County, New York · implied b. ~1923 — 7 household members
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Bronx |
| Naturalization Status | Alien |
| Occupation | File Clerk |
| Industry | Office Work |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Bronx |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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.
Show:
This person
Anchor record
Mary Lennon
Daughter · 1940 · age 17 · b. ~1923 · New York
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Sibling
Robert Lennon
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Lennon
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Lennon
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lennon
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-02461-00195)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jessie Mcrae | 59 | Wife | — | Scotland |
| 42 | Frank Wypocki | 53 | Head | Porter | Russia |
| 43 | Stanley Wypocki | 22 | Son | Plater | New York |
| 44 | Edward Wypocki | 20 | Son | Truck Helper | New York |
| 45 | Alfred Wypocki | 17 | Son | Aluminum Plater | New York |
| 46 | Jennie Turula | 84 | Mother in law | — | Poland |
| 47 | Charles Monis | 53 | Head | Laborer | Italy |
| 48 | Rocco Benedetto | 58 | Head | Bricklayer | Italy |
| 49 | Vincenza Benedetto | 43 | Wife | — | Italy |
| 50 | Lucy Benedetto | 25 | Daughter | Operator | New York |
| 51 | Irene Benedetto | 18 | Daughter | Finisher | New York |
| 52 | Concetta Benedetto | 15 | Daughter | — | New York |
| 53 | Mary Benedetto | 9 | Daughter | — | New York |
| 54 | Alexander Lewanski | 46 | Head | Laborer | Poland |
| 55 | Helen Lewanski | 19 | Daughter | Framer | New York |
| 56 | Agnes Lewanski | 17 | Daughter | — | New York |
| 57 | Edward Lewanski | 15 | Son | — | New York |
| 58 | Francis Lewanski | 10 | Son | — | New York |
| 59 | Louis Freitas | 66 | Head | Fireman | Madeira |
| 60 | Mary Freitas | 53 | Wife | — | Madeira |
| 61 | Louis Freitas | 26 | Son | Elevator Operator | Massachusetts |
| 62 | Alice Freitas | 18 | Daughter | File Clerk | Massachusetts |
| 63 | Ludovina Freitas | 17 | Daughter | — | Massachusetts |
| 64 | John Freitas | 8 | Son | — | New York |
| 65 | John Andrade | 71 | Son in law | — | Madeira |
| 66 | Eliza Andrade | 73 | Mother | — | Madeira |
| 67 | Thomas Lennon | 48 | Head | Driver'S Helper | Scotland |
| 68 | Margaret Lennon | 40 | Wife | Housemaid | Scotland |
| 69 | Mary Lennon THIS PERSON | 17 | Daughter | File Clerk | Scotland |
| 70 | Thomas Lennon | 13 | Son | — | New York |
| 71 | Eugene Lennon | 11 | Son | — | New York |
| 72 | Robert Lennon | 8 | Son | — | New York |
| 73 | Helen Lennon | 4 | Daughter | — | New York |
| 74 | Catherine Werner | 35 | Head | Operator | New York |
| 75 | James Werner | 18 | Wife | — | New York |
| 76 | Sigmund Ross | 55 | Head | Tailor | Poland |
| 77 | Ida Ross | 50 | Wife | — | Poland |
| 78 | Blanche Ross | 17 | Daughter | — | Virginia |
| 79 | Ellen Sunnie | 65 | Head | — | Eire |
| 80 | James Sunnie | 36 | Son | — | New York |
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)