JH
John Hancock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Hancock across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 5-person household.
Age 61
b. ~1879
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | HanCock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Berwyn City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Meat Inspector |
| Industry | Packing House |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 2000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Meat Inspector |
| Township / Ward | Berwyn City |
| Est. Birth Year | ~1879 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Stella Hancock | Spouse | — | 57 | ~1883 |
| Ella Hancock | Other | — | 30 | ~1910 |
| John Hancock | Head | — | 61 | ~1879 |
| John Hancock | Other | — | 1 | ~1939 |
| Ralph Hancock | Son | — | 22 | ~1918 |
Census Appearances
1920
Cook, Illinois
Head, age 41
Cook, Illinois · implied b. ~1879 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hancock |
| Given Name | John O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| Naturalization Status | Naturalized |
| Father's Birthplace | Canada |
| Mother's Birthplace | Illinois |
| Occupation | Salesman |
| Industry | Office Supplies |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 50
Cook, Illinois · implied b. ~1880 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hancock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 30 |
| Father's Birthplace | Canada Eng. |
| Mother's Birthplace | Illinois |
| Occupation | Salesman |
| Industry | Stationery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 7000 |
| Radio Set | R |
| Veteran | Yes SR |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 61
Cook-County, Illinois · implied b. ~1879 — 5 household members
| Surname | HanCock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Berwyn City |
| 1935 Residence (County) | Cook |
| Occupation | Meat Inspector |
| Industry | Packing House |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 2000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Hancock 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 Hancock
Head · 1940 · age 61 · b. ~1879 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00772-00102)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillian Contel | 40 | Wife | — | Illinois |
| 42 | Clifford Contel | 19 | Son | Apprentice Toolgrinder | Illinois |
| 43 | Gladys Contel | 16 | Daughter | — | Illinois |
| 44 | Norman Gustin | 56 | Head | Salesman | England |
| 45 | Hulda Gustin | 55 | Wife | — | Illinois |
| 46 | Lynn Gustin | 22 | Daughter | Packer | Illinois |
| 47 | Marjorie Gustin | 30 | Daughter-in-law | Trained Nurse | California |
| 48 | Harold Crawel | 35 | Head | Supervisor | Ohio |
| 49 | Gladys Crawel | 36 | Wife | — | Illinois |
| 50 | Patricia Crawel | 7 | Niece | — | Ohio |
| 51 | John Hancock THIS PERSON | 61 | Head | Meat Inspector | Illinois |
| 52 | Stella Hancock | 57 | Wife | — | Illinois |
| 53 | Ralph Hancock | 22 | Son | Musician | Illinois |
| 54 | Ella Hancock | 30 | Daughter-in-law | — | Illinois |
| 55 | John L. Hancock | 1 | Grandson | — | Missouri |
| 56 | Samuel Edwards | 78 | Head | — | England |
| 57 | Florence Edwards | 75 | Wife | — | England |
| 58 | James Bower | 59 | Head | Accountant | Ohio |
| 59 | Etha M. Bower | 55 | Wife | — | Missouri |
| 60 | Edith Bower | 23 | Daughter | New Worker | Illinois |
| 61 | John Kelley | 45 | Head | Gardner | Indiana |
| 62 | Freda Kelley | 38 | Wife | Seamstress | Illinois |
| 63 | Otto Kelley | 14 | Son | — | Illinois |
| 64 | Freda Kelley | 12 | Daughter | — | Illinois |
| 65 | Herbert Bowman | 33 | Head | Tailor | Germany |
| 66 | Betty Bowman | 33 | Wife | — | Czechoslovakia |
| 67 | Joan Bowman | 5 | Daughter | — | Illinois |
| 68 | Otto Vlach | 36 | Head | Salesman | Illinois |
| 69 | Elsie Vlach | 35 | Wife | — | Illinois |
| 70 | Vernon Vlach | 13 | Son | — | Illinois |
| 71 | William Krishna | 57 | Head | Foreman | Germany |
| 72 | Ella Krishna | 52 | Wife | — | Wisconsin |
| 73 | Marilyn Krishna | 19 | Daughter | New Worker | Wisconsin |
| 74 | Elaine Krishna | 32 | Daughter | Clerical | Wisconsin |
| 75 | Mary A. Smith | 41 | Head | Manager | Indiana |
| 76 | Claire Smith | 19 | Daughter | Clerk | Texas |
| 77 | Helen Smith | 17 | Daughter | Clerk | Texas |
| 78 | William Borch | 33 | Head | Baker | Ohio |
| 79 | Anton Jetznik | 54 | Head | Switchboard Installer | Hungary |
| 80 | Helen Z. Jetznik | 47 | Wife | Clerk | Hungary |
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)