JC
John Cobb — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-York-County, New York
Our Model Tree links this John Cobb across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed), with identified parents Edward & Catherine — first a head (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Cobb |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Manhattan |
| 1935 Residence (County) | New York |
| Additional Details | |
| Occupation | laborer |
| Industry | sewerage plant |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 708 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Laborer |
| Township / Ward | Manhattan |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Mary Cobb | Spouse | — | 22 | ~1918 |
| John Cobb | Son | — | 2 | ~1938 |
| John Cobb | Head | — | 23 | ~1917 |
Census Appearances
1920
New York, …
Son, age 2
New York, New York · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
New York, …
Son, age 13
New York, New York · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Head, age 23
New-York-County, New York · implied b. ~1917 — 3 household members
| Surname | Cobb |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Manhattan |
| 1935 Residence (County) | New York |
| Occupation | laborer |
| Industry | sewerage plant |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 708 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Cobb across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Cobb (~0.92 confidence) and mother Catherine Cobb (~0.92 confidence) and mother Catherine Cobb (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Cobb
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Catherine Cobb
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Catherine Cobb
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Cobb
Head · 1940 · age 23 · b. ~1917 · New York
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02640-00701)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Burke | 2 | Son | — | New York |
| 42 | Catherine Howard | 50 | Head | Chambermaid | New York |
| 43 | John Cauley | 33 | Head | Furniture Mover | Rhode Is. |
| 44 | Helen Cauley | 36 | Wife | — | Vermont |
| 45 | Jean Cauley | 8 | Daughter | — | New Jersey |
| 46 | Lawrence Keane | 36 | Head | Washer | Maine |
| 47 | Catherine Keane | 48 | Wife | — | Ireland |
| 48 | Alvin Brinke | 41 | Head | — | New York |
| 49 | Paul Romane | 75 | Father | — | Italy |
| 50 | Viola Romane | 79 | Mother | — | Italy |
| 51 | Richard Brinke | 15 | Son | — | New York |
| 52 | John Moran | 34 | Head | Porter | Ireland |
| 53 | Mary Moran | 28 | Wife | — | Ireland |
| 54 | John Moran | 1 | Son | — | New York |
| 55 | Albert Liebermann | 51 | Head | Elevator Op | Germany |
| 56 | Mollie Liebermann | 29 | Wife | — | N. Carolina |
| 57 | John Cobb THIS PERSON | 23 | Head | Laborer | New York |
| 58 | Mary Cobb | 22 | Wife | — | Ireland |
| 59 | John Cobb | 2 | Son | — | New York |
| 60 | Alice Smith | 80 | Head | — | Ireland |
| 61 | Antonia Henderson | 76 | Head | — | Belgium |
| 62 | Rose De Pace | 55 | Head | — | Italy |
| 63 | Michael De Pace | 34 | Son | Salesman | New York |
| 64 | John Kelly | 48 | Head | Baggage Porter | Eire |
| 65 | Thomas Kelly | 41 | Brother | Baggage Porter | Eire |
| 66 | Melia Nagu | 57 | Head | — | Eire |
| 67 | Maria Lehin | 70 | Lodger | — | Eire |
| 68 | Mary Christopher | 70 | Head | — | Eire |
| 69 | Diego Hermankey | 60 | Head | Laborer | Florida |
| 70 | Lucretia Hermankey | 49 | Wife | — | Cuba |
| 71 | William Markland | 29 | Head | Fireman | England |
| 72 | Mary Markland | 26 | Wife | — | Eire |
| 73 | Joseph Scott | 43 | Head | Elevator Op | New York |
| 74 | Catherine Scott | 42 | Wife | — | Ireland |
| 75 | Josephine Dalton | 65 | Head | — | Ireland |
| 76 | Rafael Acevedo | 65 | Head | Cigar Maker | Cuba |
| 77 | Barbara Acevedo | 49 | Wife | — | Florida |
| 78 | Angela Acevedo | 17 | Niece | — | Florida |
| 79 | Lawrence Murray | 67 | Head | — | Ireland |
| 80 | Mary Murray | 67 | Wife | — | Ireland |
Pedigree Summary
John
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)