JJ
John Jones — 1940 US Census Record
Model Tree available1940 United States Federal Census · Davis-County, Iowa
Our Model Tree links this John Jones across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Davis-County, Iowa (XGBoost, ~Confirmed), with identified parents J & John — first a head (b.~1898), then head of a 4-person household.
Age 42
b. ~1898
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Davis-County, Iowa |
| Surname | Jones |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Fabius Township |
| 1935 Residence (County) | Davis |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Fabius Township |
| Est. Birth Year | ~1898 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Vonda Jones | Daughter | — | 8 | ~1932 |
| John Jones | Head | — | 42 | ~1898 |
| Donald Jones | Son | — | 12 | ~1928 |
| Evalee Jones | Spouse | — | 35 | ~1905 |
Census Appearances
1900
Davis, Iowa
Son, age 2
Davis, Iowa · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | John M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Birth Month | Jan |
| Birth Year | 1898 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1910
Davis, Iowa
Son, age 12
Davis, Iowa · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Davis, Iowa
Son, age 22
Davis, Iowa · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Davis, Iowa
Other, age 32
Davis, Iowa · implied b. ~1898 — 49 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | John M. |
| Relationship to Head | R |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 27 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | general farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Davis-County, Iowa
Head, age 42
Davis-County, Iowa · implied b. ~1898 — 4 household members
| Surname | Jones |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Fabius Township |
| 1935 Residence (County) | Davis |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Jones across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father J Jones (~0.92 confidence) and father John Jones (~0.92 confidence) and mother Olive Jones (~0.92 confidence) and mother Olive Jones (~0.92 confidence) and mother Cellia Jones (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
J Jones
b. ~1869
Source father
● Household
· direct · ~0.92
Father
John Jones
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Olive Jones
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Olive Jones
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Cellia Jones
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Jones
Head · 1940 · age 42 · b. ~1898 · Iowa
★ 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 — Davis-County, Iowa
Open full size
1940 US Federal Census — Davis-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01154-00125)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Henry Goldenstein | 60 | Head | Farmer | Iowa |
| 42 | Ollie M Goldenstein | 53 | Wife | — | Iowa |
| 43 | Carl F Goldenstein | 30 | Son | Laborer | Iowa |
| 44 | Geneva P Goldenstein | 17 | Daughter | — | Iowa |
| 45 | Martha E Daniel | 82 | Head | — | Iowa |
| 46 | Lester E Bennett | 26 | Head | Farmer | Missouri |
| 47 | Nora J Bennett | 26 | Wife | Teacher | Iowa |
| 48 | Merle W Stoker | 32 | Head | Farmer | Iowa |
| 49 | Enid L Stoker | 32 | Wife | — | Iowa |
| 50 | Alfred D Stoker | 8 | Son | — | Iowa |
| 51 | Rayla L Stoker | 5 | Daughter | — | Iowa |
| 52 | Jesse R Stoker | 56 | Head | Farmer | Iowa |
| 53 | Clinton B Gravett | 39 | Head | Farmer | Iowa |
| 54 | Pauline J Gravett | 32 | Wife | — | Iowa |
| 55 | Dewell E Gravett | 12 | Son | — | Iowa |
| 56 | Darlene L Gravett | 10 | Daughter | — | Iowa |
| 57 | Doren D Gravett | 6 | Son | — | Iowa |
| 58 | Jerry A Gravett | 3 | Son | — | Iowa |
| 59 | Alfred J Darnby | 45 | Head | Farmer | Nebraska |
| 60 | Mary Darnby | 43 | Wife | — | Iowa |
| 61 | Charles E Snell | 52 | Head | Laborer | Iowa |
| 62 | Grace P Snell | 44 | Wife | — | Iowa |
| 63 | Loel Lamb | 28 | Head | Laborer On | Iowa |
| 64 | Eva N Lamb | 27 | Wife | — | Iowa |
| 65 | Marjorie M Lamb | 3 | Daughter | — | Iowa |
| 66 | Wayne D Lamb | 1 | Son | — | Iowa |
| 67 | Lester D Lamb | 0 | Son | — | Iowa |
| 68 | John M Jones THIS PERSON | 42 | Head | Farmer | Iowa |
| 69 | Evalee B Jones | 35 | Wife | — | Iowa |
| 70 | Donald V Jones | 12 | Son | — | Iowa |
| 71 | Vonda M Jones | 8 | Daughter | — | Iowa |
| 72 | Albert Hayden | 76 | Head | Farmer | Iowa |
| 73 | Mae E Hayden | 78 | Wife | — | Iowa |
| 74 | George P Greene | 33 | Head | Farmer | Missouri |
| 75 | Ruth G Greene | 24 | Wife | — | Iowa |
| 76 | Jerry L Greene | 5 | Son | — | Iowa |
| 77 | Bennett W Hawk | 42 | Head | Farmer | Iowa |
| 78 | Mabel A Hawk | 42 | Wife | — | Iowa |
| 79 | Hellen M Hawk | 17 | Daughter | — | Iowa |
| 80 | Rex L Hawk | 9 | Son | — | Iowa |
Related Census Records
Pedigree Summary
John
Gen 1 · 5 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)