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John Jennings — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Illinois
Our Model Tree links this John Jennings across the 1920, 1930 and 1940 US Censuses in Marion-County, Illinois (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Illinois |
| Surname | Jennings |
| Given Name | John William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Patoka Village |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Lumber |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 800 |
| Highest Grade | Hs 4 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Carpenter |
| Township / Ward | Patoka Village |
| Est. Birth Year | ~1913 |
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 |
|---|---|---|---|---|
| Evalene Jennings | Daughter | — | 13 | ~1927 |
| Mary Jennings | Daughter | — | 15 | ~1925 |
| John Jennings | Head | — | 55 | ~1885 |
| John Jennings | Son | — | 27 | ~1913 |
| Anna Jennings | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Marion, Illinois
Son, age 6
Marion, Illinois · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jennings |
| Given Name | John W |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Indiana |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Marion, Illinois
Son, age 17
Marion, Illinois · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jennings |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Marion-County, Illinois
Son, age 27
Marion-County, Illinois · implied b. ~1913 — 5 household members
| Surname | Jennings |
| Given Name | John William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Patoka Village |
| Occupation | Carpenter |
| Industry | Lumber |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 800 |
| Highest Grade | Hs 4 |
| 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 Jennings across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Jennings (~0.92 confidence) and father John Jennings (~0.92 confidence) and mother Anna Jennings (~0.92 confidence) and mother Donna Jennings (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Jennings
b. ~1866
Source father
● Household
· direct · ~0.92
Father
John Jennings
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Anna Jennings
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Donna Jennings
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Jennings
Son · 1940 · age 27 · b. ~1913 · Illinois
★ You are viewing this record
Sibling
Evalene Jennings
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Jennings
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marion-County, Illinois
Open full size
1940 US Federal Census — Marion-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00853-00170)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Parker | 53 | Head | Laborer | Illinois |
| 42 | Leona Parker | 47 | Wife | Laundress | Illinois |
| 43 | Enoch Parker | 26 | Son | Laborer | Illinois |
| 44 | Raymond Parker | 16 | Son | Maintenance | Illinois |
| 45 | James Parker | 14 | Son | — | Illinois |
| 46 | Harold Parker | 12 | Son | — | Illinois |
| 47 | Mary Mae Parker | 5 | Daughter | — | Illinois |
| 48 | William Caliol | 76 | Head | — | Illinois |
| 49 | Mary Caliol | 68 | Wife | — | Illinois |
| 50 | Alva Johnstone | 66 | Head | — | Illinois |
| 51 | Robert Johnstone | 24 | Son | Truck Driver | Illinois |
| 52 | Allen Alexander | 88 | Head | — | Illinois |
| 53 | Ella Alexander | 79 | Wife | — | Kentucky |
| 54 | Sephae Adams | 62 | Head | Farmer | Illinois |
| 55 | Marvel Adams | 46 | Wife | — | Arkansas |
| 56 | Rachel Adams | 9 | Daughter | — | Illinois |
| 57 | Jeff Adams | 90 | Father | — | Illinois |
| 58 | Robert Money | 23 | Head | Laborer | Illinois |
| 59 | Julia Ray Money | 19 | Wife | — | Oklahoma |
| 60 | Carolyn Kay Money | 1 | Daughter | — | Illinois |
| 61 | Wondes Wilson | 34 | Head | Printer | Illinois |
| 62 | Annabelle Wilson | 30 | Wife | — | Illinois |
| 63 | John E Wilson | 8 | Son | — | Illinois |
| 64 | Billy Bryan Wilson | 5 | Son | — | Illinois |
| 65 | Anna Mae Wilson | 1 | Daughter | — | Illinois |
| 66 | Stephen F Eaglin | 75 | Head | — | Ohio |
| 67 | Warren Ernest Black | 10 | Grandson | — | Illinois |
| 68 | Orville Pence | 39 | Head | Carpenter | Illinois |
| 69 | Loretta Pence | 32 | Wife | — | Illinois |
| 70 | Harry Hudspeth | 61 | Head | Retired Mail Carrier | Illinois |
| 71 | Pearl Hudspeth | 48 | Wife | — | Illinois |
| 72 | John A Jennings | 55 | Head | Sales Auctioneer | Illinois |
| 73 | Anna Jennings | 47 | Wife | — | Illinois |
| 74 | John William Jennings THIS PERSON | 27 | Son | Carpenter | Illinois |
| 75 | Mary Helen Jennings | 15 | Daughter | — | Illinois |
| 76 | Evalene Jennings | 13 | Daughter | — | Illinois |
| 77 | Frank Miller | 55 | Head | Laborer | Illinois |
| 78 | Bertha Miller | 39 | Wife | — | Illinois |
| 79 | Olin Belcher | 12 | Step Son | — | Illinois |
| 80 | Paul Belcher | 21 | Step Son | Laborer | Illinois |
Related Census Records
Pedigree Summary
John + 2 siblings
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)