JL
John Lennon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Lennon across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1904), then head of a 6-person household.
Age 36
b. ~1904
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Lennon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Porter |
| Industry | steam railway |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Porter |
| Township / Ward | Boston City |
| Est. Birth Year | ~1904 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Lennon | Daughter | — | 34 | ~1906 |
| Catherine Lennon | Daughter | — | 38 | ~1902 |
| Mary Lennon | Head | — | 69 | ~1871 |
| John Lennon | Son | — | 36 | ~1904 |
| Mary Lennon | Daughter | — | 43 | ~1897 |
| James Lennon | Son | — | 31 | ~1909 |
Census Appearances
1930
Suffolk, Massachusetts
Head, age 26
Suffolk, Massachusetts · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lennane |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Naturalization Status | Un |
| Age at First Marriage | 23 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Fire-helper |
| Industry | Irish Free |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 36
Suffolk-County, Massachusetts · implied b. ~1904 — 6 household members
| Surname | Lennon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Occupation | Porter |
| Industry | steam railway |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 John Lennon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Lennon
Son · 1940 · age 36 · b. ~1904 · Massachusetts
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Sibling
Catherine Lennon
Sibling · 1940 · age 38
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lennon
Sibling · 1940 · age 43
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Lennon
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lennon
Sibling · 1940 · age 31
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01679-00545)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michael E. Powers | 78 | Head | — | Ireland |
| 2 | Emma T. Powers | 57 | Wife | — | Canada English |
| 3 | Mary E. Jewett | 68 | Head | — | Ireland English |
| 4 | Mitchell M. Condos | 26 | Head | Clerk-Billing | Massachusetts |
| 5 | Sophie P. Condos | 36 | Wife | — | Massachusetts |
| 6 | Patricia Condos | 1 | Daughter | — | Massachusetts |
| 7 | June Manchester | 12 | Daughter | — | Massachusetts |
| 8 | James J. Graham | 80 | Head | — | Nova Scotia |
| 9 | Mary C. Graham | 72 | Wife | — | Nova Scotia |
| 10 | Edwin Lougee | 68 | Head | — | Massachusetts |
| 11 | Mary E. Lougee | 60 | Wife | — | Massachusetts |
| 12 | Caroline M. Lougee | 33 | Daughter | Typist | Massachusetts |
| 13 | Ruth E. Lougee | 30 | Daughter | Teacher | Massachusetts |
| 14 | Edwin Jr. Lougee | 38 | Son | — | Massachusetts |
| 15 | Edwin Iii Lougee | 12 | Grandson | — | Massachusetts |
| 16 | Carrie Lougee | 58 | Head | — | Massachusetts |
| 17 | Bernard J. Dillon | 58 | Head | Snow Tender | Nova Scotia |
| 18 | Theresa F. Dillon | 58 | Wife | — | Massachusetts |
| 19 | Catherine E. Kennedy | 62 | Sister-in-law | — | Massachusetts |
| 20 | Peter J. Sullivan | 65 | Head | Store Keeper | Rhode Island |
| 21 | Elizabeth L. Sullivan | 35 | Daughter | Reporter | Massachusetts |
| 22 | Edward J. Sullivan | 32 | Son | Salesman | Massachusetts |
| 23 | Mary Lennon | 69 | Head | — | Nova Scotia |
| 24 | Mary E. Lennon | 43 | Daughter | Clerk-Billing | Massachusetts |
| 25 | Catherine Lennon | 38 | Daughter | — | Massachusetts |
| 26 | John Lennon THIS PERSON | 36 | Son | Porter | Massachusetts |
| 27 | Elizabeth Lennon | 34 | Daughter | Collector | Massachusetts |
| 28 | James Lennon | 31 | Son | Assistant Buyer | Massachusetts |
| 29 | Henry F. Hicks | 57 | Head | Guard | Massachusetts |
| 30 | Katherine Hicks | 56 | Wife | — | Massachusetts |
| 31 | Elizabeth A. Hicks | 37 | Daughter | Social Worker | Massachusetts |
| 32 | John J. Hopkins | 66 | Head | Sheet Metal Worker | England |
| 33 | Catherine Hopkins | 65 | Wife | — | Nova Scotia |
| 34 | Catherine Hopkins | 37 | Daughter | Buyer | Massachusetts |
| 35 | Edward J. Hopkins | 26 | Son | Bookkeeper | Massachusetts |
| 36 | Josephine Mahony | 49 | Head | — | Massachusetts |
| 37 | Robert W. Mahony | 26 | Son | Clerk-Billing | Massachusetts |
| 38 | Florence L. Mahony | 22 | Daughter | Typist | Massachusetts |
| 39 | Margaret L. Mahony | 20 | Daughter | Bookkeeper | Massachusetts |
| 40 | Rose Keenan | 50 | Head | — | Nova Scotia |
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)