HC
Harold Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Joseph-County, Indiana
Our Model Tree links this Harold Cook across the 1920, 1930 and 1940 US Censuses in St.-Joseph-County, Indiana (XGBoost, ~Confirmed), with identified parents Charles & Chas — first a son (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Joseph-County, Indiana |
| Surname | Cook |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Mishawaka |
| 1935 Residence (County) | St Joseph |
| Additional Details | |
| Occupation | Day laborer |
| Industry | Rubber Mfg. |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Laborer |
| Township / Ward | Mishawaka |
| Est. Birth Year | ~1914 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Leo Angell | Other | — | 36 | ~1904 |
| Harold Cook | Son | — | 26 | ~1914 |
| Bernice Angell | Other | — | 33 | ~1907 |
| Ronald Angell | Other | — | 3 | ~1937 |
| Theodora Cook | Head | — | 52 | ~1888 |
Census Appearances
1920
St Joseph, …
Son, age 6
St Joseph, Indiana · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
St Joseph, …
Son, age 16
St Joseph, Indiana · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
St.-Joseph-County, Indiana
Son, age 26
St.-Joseph-County, Indiana · implied b. ~1914 — 5 household members
| Surname | Cook |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Mishawaka |
| 1935 Residence (County) | St Joseph |
| Occupation | Day laborer |
| Industry | Rubber Mfg. |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Harold Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Cook (~0.92 confidence) and father Chas Cook (~0.92 confidence) and mother Theodora Cook (~0.92 confidence) and mother Theodora Cook (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Cook
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Chas Cook
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Theodora Cook
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Theodora Cook
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Cook
Son · 1940 · age 26 · b. ~1914 · Indiana
★ 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 — St.-Joseph-County, Indiana
Open full size
1940 US Federal Census — St.-Joseph-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01092-00579)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Tollens | 55 | Head | Asst Supt | Indiana |
| 42 | Anna Tollens | 53 | Wife | — | Ohio |
| 43 | Marion Tollens | 27 | Daughter | — | Indiana |
| 44 | Peter J. Tollens | 25 | Son | Bottling Line | Indiana |
| 45 | Wona|Nona|Vona Felle Tollens | 24 | Daughter | Clerk | Indiana |
| 46 | Mary Jane Tollens | 18 | Daughter | — | Indiana |
| 47 | James Tollens | 8 | Son | — | Indiana |
| 48 | Gustave A. Michiels | 34 | Head | Sponge Maker | Belgium |
| 49 | Margaret Michiels | 30 | Wife | Sponge Maker | Belgium |
| 50 | Aline Michiels | 13 | Daughter | — | Indiana |
| 51 | Maurice Michiels | 9 | Son | — | Indiana |
| 52 | Gentel Michiels | 49 | Head | Elec. Control | Belgium |
| 53 | Gerardina Michiels | 39 | Wife | Assembler | Holland |
| 54 | Julius Newhouse | 43 | Head | Leather Worker | Belgium |
| 55 | Henrietta Newhouse | 43 | Wife | — | Indiana |
| 56 | Theodore Morgan | 39 | Head | Sales | Missouri |
| 57 | Virginia Morgan | 29 | Wife | — | Penn |
| 58 | Wayne Morgan | 9 | Son | — | Indiana |
| 59 | Barbara Morgan | 2 | Daughter | — | Indiana |
| 60 | Theodora Cook | 52 | Head | — | Indiana |
| 61 | Harold Cook THIS PERSON | 26 | Son | Day Laborer | Indiana |
| 62 | Leo L. Angell | 36 | Brother | Doctor | Indiana |
| 63 | Bernice Angell | 33 | Sister in L | — | Missouri |
| 64 | Ronald Angell | 3 | Nephew | — | Minnesota |
| 65 | William Harvey | 57 | Head | Garage Foreman | Michigan |
| 66 | Josephine Harvey | 59 | Wife | — | Illinois |
| 67 | Loyal Beehler | 28 | Son in law | Truck Driver | Indiana |
| 68 | Geneve Beehler | 23 | Daughter | Machine Op. | Indiana |
| 69 | James Robertson | 25 | Head | Janitor | Vermont |
| 70 | Isabel Robertson | 26 | Wife | — | Indiana |
| 71 | Norman Robertson | 7 | Son | — | Indiana |
| 72 | Virgil Smith | 41 | Head | Paper Cutter | Indiana |
| 73 | Ruth Smith | 35 | Wife | — | Indiana |
| 74 | Helen Smith | 14 | Daughter | — | Indiana |
| 75 | Chester Smith | 12 | Son | — | Indiana |
| 76 | Andrew Stevens | 22 | Head | Repair Man | Indiana |
| 77 | Jessie Stevens | 19 | Wife | — | Kentucky |
| 78 | Robert Stevens | 0 | Son | — | Indiana |
| 79 | Emric Warren | 52 | Head | Secretary | Indiana |
| 80 | Reathel Warren | 42 | Wife | — | Indiana |
Pedigree Summary
Harold
Gen 1 · 4 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)