JC
John Cobb — 1940 US Census Record
Model Tree available1940 United States Federal Census · Erie-County, New York
Our Model Tree links this John Cobb across the 1920, 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, New York |
| Surname | Cobb |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Buffalo City |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Occupation | Clerk |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Clerk |
| Township / Ward | Buffalo City |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| John Cobb | Head | — | 62 | ~1878 |
| John Cobb | Son | — | 21 | ~1919 |
| Margaret Cobb | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Erie, New …
Son, age 1
Erie, New York · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | John J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Maine |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Erie, New …
Son, age 11
Erie, New York · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Maine |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Erie-County, New …
Son, age 21
Erie-County, New York · implied b. ~1919 — 3 household members
| Surname | Cobb |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Buffalo City |
| 1935 Residence (County) | Erie |
| Occupation | Clerk |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 200 |
| Highest Grade | Hs 4 |
| 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 John Cobb (~0.92 confidence) and father John Cobb (~0.92 confidence) and father John Cobb (~0.92 confidence) and mother Margaret Cobb (~0.92 confidence) and mother Margaret Cobb (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Cobb
b. ~1878
Source father
● Household
· direct · ~0.92
Father
John Cobb
b. ~1879
Source father
● Household
· direct · ~0.92
Father
John Cobb
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Margaret Cobb
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Margaret Cobb
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Cobb
Son · 1940 · age 21 · b. ~1919 · 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 — Erie-County, New York
Open full size
1940 US Federal Census — Erie-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02834-00484)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Susan Mcmurray | 38 | Daughter | — | Pennsylvania |
| 2 | Walter Mcmurray | 34 | Son | Motorman | Pennsylvania |
| 3 | Margaret Mcmurray | 28 | Daughter | Domestic | New York |
| 4 | Lawrence J. Kock | 45 | Head | Agent | New York |
| 5 | Helena Kock | 44 | Wife | — | New York |
| 6 | Robert L. Kock | 19 | Son | — | New York |
| 7 | Ida M. Kock | 14 | Daughter | — | New York |
| 8 | Roy J. Kock | 8 | Son | — | New York |
| 9 | Arthur Brown | 34 | Head | Teller | Canada-Eng |
| 10 | Mary Brown | 28 | Wife | — | Ohio |
| 11 | Mary Ann Brown | 7 | Daughter | — | New York |
| 12 | Carol Brown | 3 | Daughter | — | New York |
| 13 | Sipp Reinstra | 73 | Head | — | Netherlands |
| 14 | Nicholas Reinstra | 42 | Son | Machinist | New York |
| 15 | Anna Fogel | 29 | Daughter | Stenographer | New York |
| 16 | Edward Fogel | 33 | Son-in-law | Attendant | New York |
| 17 | John A. Cobb | 62 | Head | Maintenance Man | Maine |
| 18 | Margaret Cobb | 43 | Wife | — | New York |
| 19 | John Cobb THIS PERSON | 21 | Son | Clerk | New York |
| 20 | John Schmitt | 49 | Head | Polisher | Ohio |
| 21 | Hattie Schmitt | 42 | Wife | — | Germany |
| 22 | Isabel Schmitt | 16 | Daughter | — | New York |
| 23 | John Jr. Schmitt | 14 | Son | — | New York |
| 24 | Ellen Anson | 50 | Head | — | England |
| 25 | Joseph Anson | 19 | Son | Attendant | Illinois |
| 26 | Clarence Anson | 17 | Son | — | Illinois |
| 27 | William Devork | 37 | Head | Plumber | New York |
| 28 | Louise Devork | 35 | Wife | — | New York |
| 29 | Harold Le Pine | 26 | Head | Brake Operator | New York |
| 30 | Arlene Le Pine | 26 | Wife | — | New York |
| 31 | Carol Lee Le Pine | 4 | Daughter | — | New York |
| 32 | Gail Le Pine | 2 | Daughter | — | New York |
| 33 | Edward Dibble | 32 | Head | Lineman | New York |
| 34 | Genevieve Dibble | 31 | Wife | — | New York |
| 35 | Paul E. Dibble | 4 | Son | — | New York |
| 36 | Louis Villa | 35 | Head | Salesman | New York |
| 37 | Mary Villa | 28 | Wife | — | New York |
| 38 | Mary Villa | 3 | Daughter | — | New York |
| 39 | Frank Jonish | 41 | Head | Foreman | New York |
| 40 | Louise Jonish | 39 | Wife | — | New York |
Pedigree Summary
John
Gen 1 · 5 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)