JC
John Cunningham — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-London-County, Connecticut
Our Model Tree links this John Cunningham across the 1920, 1930 and 1940 US Censuses in New-London-County, Connecticut (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 3-person household.
Age 56
b. ~1884
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-London-County, Connecticut |
| Surname | Cunningham |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Borough of Groton |
| 1935 Residence (County) | New London |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Machinist |
| Industry | Submarine Shipyard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2550 |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Machinist |
| Township / Ward | Borough Of Groton |
| Est. Birth Year | ~1884 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Cunningham | Daughter | — | 28 | ~1912 |
| John Cunningham | Head | — | 56 | ~1884 |
| Rebecca Cunningham | Spouse | — | 52 | ~1888 |
Census Appearances
1920
New London, …
Head, age 34
New London, Connecticut · implied b. ~1886 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cunningham |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1906 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machinist |
| Industry | Ship Engine Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Birth Country | Scotland |
| Year of Naturalization | 1912 |
| Birthplace (normalized) | scotland |
1930
New London, …
Head, age 46
New London, Connecticut · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cunningham |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 25 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machinist |
| Industry | Ship yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 26 |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
New-London-County, Connecticut
Head, age 56
New-London-County, Connecticut · implied b. ~1884 — 3 household members
| Surname | Cunningham |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Borough of Groton |
| 1935 Residence (County) | New London |
| Naturalization Status | Naturalized |
| Occupation | Machinist |
| Industry | Submarine Shipyard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2550 |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| 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 John Cunningham across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Cunningham
Head · 1940 · age 56 · b. ~1884 · Connecticut
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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 — New-London-County, Connecticut
Open full size
1940 US Federal Census — New-London-County, Connecticut
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00523-00378)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert E. Crumbs | 23 | Boarder | Bookkeeper | Connecticut |
| 2 | Lucille A. Error | 23 | Boarder | Bookkeeper | Connecticut |
| 3 | Clarence W. Brown | 37 | Head | Utility Man | Connecticut |
| 4 | Beatrice Brown | 37 | Wife | — | Massachusetts |
| 5 | Ethel J. Brown | 17 | Daughter | Nurse Maid | Massachusetts |
| 6 | James W. Brown | 16 | Son | — | Connecticut |
| 7 | Harriet O. Brown | 14 | Daughter | — | Connecticut |
| 8 | John D. Brown | 12 | Son | — | Connecticut |
| 9 | James H. Brown | 68 | Father | — | Virginia |
| 10 | Harold R. Slaper | 43 | Head | Draftsman | Connecticut |
| 11 | Elizabeth F. Slaper | 78 | Mother | — | Connecticut |
| 12 | Effie L. Kniffland | 63 | Head | — | Maine |
| 13 | Arthur D. Wimbley | 25 | Head | Sales Correspondent | Iowa |
| 14 | Winifred E. Wimbley | 20 | Wife | Sales Clerk | Connecticut |
| 15 | Diana M. Wimbley | 1 | Daughter | — | Connecticut |
| 16 | Eugene Merritt | 41 | Head | Clerk | Connecticut |
| 17 | Rosalie L. Merritt | 35 | Wife | — | Connecticut |
| 18 | Eugene C. Merritt | 7 | Son | — | Connecticut |
| 19 | Charles W. Merritt | 81 | Father | — | Connecticut |
| 20 | Thomas F. Tefft | 23 | Head | Apprentice Draftsman | Rhode Island |
| 21 | Virginia J. Tefft | 23 | Wife | — | Connecticut |
| 22 | Judith L. Tefft | 0 | Daughter | — | Connecticut |
| 23 | John Cunningham THIS PERSON | 56 | Head | Machinist | Scotland |
| 24 | Rebecca Cunningham | 52 | Wife | — | Scotland |
| 25 | Margaret Cunningham | 28 | Daughter | — | Massachusetts |
| 26 | Lucy L. Meff | 54 | Head | Grade School Teacher | Connecticut |
| 27 | Landphere C. Taylor Meff | 89 | Father | — | Connecticut |
| 28 | Bernard P. Moran | 32 | Head | Electrician | Rhode Island |
| 29 | Jean P. Moran | 30 | Wife | — | New Hampshire |
| 30 | Robert B. Moran | 7 | Son | — | Rhode Island |
| 31 | Robert W. Cores | 42 | Head | Machinist | New York |
| 32 | Helen M. Cores | 34 | Wife | — | Connecticut |
| 33 | Robert W. Jr. Cores | 13 | Son | — | Connecticut |
| 34 | Donald W. Cores | 8 | Son | — | Connecticut |
| 35 | Birt O. Fowler | 72 | Head | Painter & Paperhanger | Illinois |
| 36 | Mary A. Fowler | 62 | Wife | — | Missouri |
| 37 | Clyde Fowler | 48 | Son | — | Kansas |
| 38 | Guy O. Blackinton | 58 | Head | Machinist | Maine |
| 39 | Bertha Blackinton | 51 | Wife | — | New Hampshire |
| 40 | James O. Williams | 67 | Head | — | Connecticut |
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)