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John Spencer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Greene-County, Illinois
Our Model Tree links this John Spencer across the 1920, 1930 and 1940 US Censuses in Greene-County, Illinois (XGBoost, ~Confirmed), with identified parents Arthur & Irene — first a son (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Greene-County, Illinois |
| Surname | Spencer |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Athensville |
| 1935 Residence (County) | Greene |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 72 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Athensville |
| Est. Birth Year | ~1910 |
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 |
|---|---|---|---|---|
| Arthur Spencer | Head | — | 55 | ~1885 |
| John Spencer | Son | — | 30 | ~1910 |
| Stacy Spencer | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Greene, Illinois
Son, age 10
Greene, Illinois · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Greene, Illinois
Son, age 20
Greene, Illinois · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farm Hand |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Greene-County, Illinois
Son, age 30
Greene-County, Illinois · implied b. ~1910 — 3 household members
| Surname | Spencer |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Athensville |
| 1935 Residence (County) | Greene |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 72 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Spencer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Spencer (~0.92 confidence) and mother Irene Spencer (~0.92 confidence) and mother Stacy Spencer (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Spencer
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Irene Spencer
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Stacy Spencer
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Spencer
Son · 1940 · age 30 · b. ~1910 · 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 — Greene-County, Illinois
Open full size
1940 US Federal Census — Greene-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00808-00018)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edith H. Spencer | 33 | Wife | — | Illinois |
| 42 | Paul E. Spencer | 13 | Son | — | Illinois |
| 43 | Ernest N. German | 57 | Head | Farmer | Illinois |
| 44 | Arthur M. Spencer | 55 | Head | Farmer | Illinois |
| 45 | Stacy R. Spencer | 52 | Wife | — | Illinois |
| 46 | John P. Spencer THIS PERSON | 30 | Son | Farmer | Illinois |
| 47 | Harry E. Gilmore | 57 | Head | Farmer | Illinois |
| 48 | Harriet L. Gilmore | 56 | Wife | — | Illinois |
| 49 | William M. Gilmore | 29 | Head | Farmer | Illinois |
| 50 | E. Jane Gilmore | 21 | Wife | — | Illinois |
| 51 | Patricia J. Gilmore | 0 | Daughter | — | Illinois |
| 52 | Maurice E. Beagley | 18 | Head | Farm Hand | Illinois |
| 53 | Clarence J. Beagley | 22 | Head | Farm Hand | Illinois |
| 54 | Charles S. Eaking | 59 | Head | Farmer | Illinois |
| 55 | Ella Eaking | 45 | Wife | — | Illinois |
| 56 | C. Edward Eaking | 15 | Son | — | Illinois |
| 57 | Martha A. Eaking | 13 | Daughter | — | Illinois |
| 58 | Lulu Newman | 65 | Head | — | Illinois |
| 59 | O. Russell Downs | 41 | Head | Farmer | Illinois |
| 60 | Lela Downs | 35 | Wife | — | Illinois |
| 61 | Lula Hendrickson | 27 | Head | — | Illinois |
| 62 | Ruby M. Hendrickson | 11 | Daughter | — | Illinois |
| 63 | Sylvia A. Hendrickson | 5 | Daughter | — | Illinois |
| 64 | Bennie F. Strummatt | 55 | Head | Proprietor | Illinois |
| 65 | Cordelia Strummatt | 51 | Wife | — | Illinois |
| 66 | H. C. Jr. Strummatt | 79 | Head | Farmer | Illinois |
| 67 | Anna Strummatt | 61 | Wife | — | Illinois |
| 68 | Forest R. Piper | 16 | Boarder | Farm Hand | Illinois |
| 69 | Martin Canatsey | 63 | Head | Farmer | Illinois |
| 70 | Bertha B. Canatsey | 53 | Wife | — | Nebraska |
| 71 | L. R. Canatsey | 28 | Son | Farmer | Illinois |
| 72 | Stanley M. Canatsey | 24 | Son | Farmer | Illinois |
| 73 | Gerald D. Canatsey | 15 | Son | Farmer | Illinois |
| 74 | James A. Marsh | 61 | Head | Farmer | Illinois |
| 75 | Eula L. Marsh | 52 | Wife | — | Illinois |
| 76 | Lewis H. Marsh | 24 | Son | Farmer | Illinois |
| 77 | Melline Marsh | 20 | Daughter | — | Illinois |
| 78 | Charles E. Marsh | 15 | Son | Farmer | Illinois |
| 79 | Nelson Whitlock | 88 | Father-in-law | — | Illinois |
| 80 | Harold H. Cummins | 21 | Head | Chauffeur | Illinois |
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)