JC
John Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Genesee-County, Michigan
Our Model Tree links this John Cook across the 1920, 1930 and 1940 US Censuses in Genesee-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 3-person household.
Age 47
b. ~1893
Male
Head
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Genesee-County, Michigan |
| Surname | Cook |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Genesee |
| Naturalization Status | Alien |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 35 |
| Highest Grade | No 4 |
| 1935 Residence | Michigan |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Occupation | Farmer |
| Township / Ward | Mundy Twp |
| Est. Birth Year | ~1893 |
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 Cook | Head | — | 47 | ~1893 |
| Harold Cook | Son | — | 19 | ~1921 |
| Jenny Cook | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Genesee, Michigan
Head, age 28
Genesee, Michigan · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Germany |
| Year of Immigration | 1894 |
| Naturalization Status | Alien |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farm laborer |
| Industry | Working Out |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1930
Genesee, Michigan
Head, age 38
Genesee, Michigan · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Alien |
| Year of Immigration | 1894 |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Home Value / Rent | 10000 |
| Veteran | No |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Genesee-County, Michigan
Head, age 47
Genesee-County, Michigan · implied b. ~1893 — 3 household members
| Surname | Cook |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Genesee |
| Naturalization Status | Alien |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 35 |
| Highest Grade | No 4 |
| 1935 Residence | Michigan |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Cook 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 Cook
Head · 1940 · age 47 · b. ~1893 · Michigan
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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 — Genesee-County, Michigan
Open full size
1940 US Federal Census — Genesee-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01750-00761)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Calvin Buell | 28 | Hired hand | Hired Hand | Michigan |
| 42 | John Cook THIS PERSON | 47 | Head | Farmer | Germany |
| 43 | Jenny Cook | 43 | Wife | — | Michigan |
| 44 | Harold Cook | 19 | Son | — | Michigan |
| 45 | Ernest L. Golden | 63 | Head | Farmer | Michigan |
| 46 | William B. Pierce | 67 | Head | Farmer | Michigan |
| 47 | Rosina Pierce | 20 | Wife | — | Michigan |
| 48 | Raymond Pierce | 9 | Grandson | — | Michigan |
| 49 | Clare Pierce | 36 | Head | Factory Worker | Michigan |
| 50 | Ruth Pierce | 25 | Wife | — | Michigan |
| 51 | Harold G. Baldwin | 35 | Head | Teacher Of Economics | Michigan |
| 52 | Artie Mae Baldwin | 33 | Wife | — | Missouri |
| 53 | Julia M. Baldwin | 6 | Daughter | — | Michigan |
| 54 | Guy D. Baldwin | 2 | Son | — | Michigan |
| 55 | Frank H. Johnson | 62 | Head | Farmer | Michigan |
| 56 | Mary E. Johnson | 48 | Wife | — | England |
| 57 | Francis G. Jr. Selden | 32 | Head | Farmer | Michigan |
| 58 | Mary Selden | 32 | Wife | — | Michigan |
| 59 | Blythe O. Selden | 10 | Son | — | Michigan |
| 60 | Nancy W. Selden | 7 | Daughter | — | Michigan |
| 61 | Marvin G. Selden | 1 | Son | — | Michigan |
| 62 | Francis G. Sr. Selden | 85 | Father | — | Michigan |
| 63 | Arthur Malone | 40 | Head | Factory Worker | Michigan |
| 64 | Bertha Malone | 34 | Wife | — | Michigan |
| 65 | Dallas Malone | 8 | Son | — | Michigan |
| 66 | Gerald Malone | 7 | Son | — | Michigan |
| 67 | Ara M. Montague | 38 | Head | Carpenter | Michigan |
| 68 | Mabel Montague | 38 | Wife | — | Michigan |
| 69 | Nora Montague | 12 | Daughter | — | Michigan |
| 70 | Wendel Montague | 9 | Son | — | Michigan |
| 71 | Marlene Montague | 6 | Daughter | — | Michigan |
| 72 | Beverly Montague | 4 | Daughter | — | Michigan |
| 73 | Harry Montague | 1 | Son | — | Michigan |
| 74 | William J. Dalgleish | 47 | Head | Die Maker | England |
| 75 | Hanna D. Dalgleish | 49 | Wife | — | Tennessee |
| 76 | William A. Lucas | 45 | Brother-in-law | — | Tennessee |
| 77 | Foster Gillespie | 39 | Head | Operator | Michigan |
| 78 | Evelyn Gillespie | 35 | Wife | — | Michigan |
| 79 | Howard M. Gillespie | 17 | Son | — | Michigan |
| 80 | William A. Gillespie | 16 | Son | — | Michigan |
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)