TS
Thomas Simpson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jones-County, Iowa
Our Model Tree links this Thomas Simpson across the 1930 and 1940 US Censuses in Jones-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1894), then head of a 8-person household.
Age 46
b. ~1894
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jones-County, Iowa |
| Surname | Simpson |
| Given Name | Thomas L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Cass Township |
| 1935 Residence (County) | Jones |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Cass Township |
| Est. Birth Year | ~1894 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Barbara Simpson | Daughter | — | 2 | ~1938 |
| Betty Simpson | Daughter | — | 15 | ~1925 |
| Anna Simpson | Daughter | — | 11 | ~1929 |
| Bertha Simpson | Spouse | — | 36 | ~1904 |
| Thomas Simpson | Head | — | 46 | ~1894 |
| Eunice Simpson | Daughter | — | 5 | ~1935 |
| George Simpson | Son | — | 9 | ~1931 |
| John Simpson | Son | — | 17 | ~1923 |
Census Appearances
1930
Jones, Iowa
Head, age 36
Jones, Iowa · implied b. ~1894 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 27 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | 9 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Jones-County, Iowa
Head, age 46
Jones-County, Iowa · implied b. ~1894 — 8 household members
| Surname | Simpson |
| Given Name | Thomas L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Cass Township |
| 1935 Residence (County) | Jones |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 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 Thomas Simpson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Simpson
Head · 1940 · age 46 · b. ~1894 · Iowa
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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 — Jones-County, Iowa
Open full size
1940 US Federal Census — Jones-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01172-00015)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas L Simpson THIS PERSON | 46 | Head | Farmer | Iowa |
| 2 | Bertha Simpson | 36 | Wife | — | Iowa |
| 3 | John A Simpson | 17 | Son | — | Iowa |
| 4 | Betty J Simpson | 15 | Daughter | — | Iowa |
| 5 | Anna R Simpson | 11 | Daughter | — | Iowa |
| 6 | George R Simpson | 9 | Son | — | Iowa |
| 7 | Eunice E Simpson | 5 | Daughter | — | Iowa |
| 8 | Barbara J Simpson | 2 | Daughter | — | Iowa |
| 9 | Frank D Fairbanks | 39 | Head | Farmer | Iowa |
| 10 | Hattie R Fairbanks | 41 | Wife | — | Iowa |
| 11 | Ellen Strong | 64 | Mother-in-law | Retired | Iowa |
| 12 | Arthur G Abel | 62 | Head | Farmer | Iowa |
| 13 | Mabel B Abel | 52 | Wife | — | Iowa |
| 14 | Arthur H Abel | 19 | Son | Instructor | Iowa |
| 15 | Dorothy A Abel | 31 | Daughter | — | Iowa |
| 16 | Henry M Clarke | 60 | Head | Farmer | Iowa |
| 17 | Lena A Clarke | 53 | Wife | — | Iowa |
| 18 | Fred H Clarke | 29 | Son | Hired Hand | Iowa |
| 19 | Elmer Clarke | 26 | Son | Hired Hand | Iowa |
| 20 | Robert R Clarke | 24 | Son | Hired Hand | Iowa |
| 21 | Louis R Clarke | 22 | Son | Hired Hand | Iowa |
| 22 | Marvin H Clarke | 20 | Son | Saw Mill | Iowa |
| 23 | Leona A Clarke | 17 | Daughter | — | Iowa |
| 24 | Edna M Clarke | 15 | Daughter | — | Iowa |
| 25 | John E Schapper | 58 | Head | Farmer | Iowa |
| 26 | Grace M Schapper | 56 | Wife | — | Iowa |
| 27 | Alfred Clarke | 40 | Head | Farmer | Iowa |
| 28 | Melva J Clarke | 29 | Wife | — | Iowa |
| 29 | James A Clarke | 9 | Son | — | Iowa |
| 30 | Lee A Clarke | 7 | Son | — | Iowa |
| 31 | Lester L Clarke | 6 | Son | — | Iowa |
| 32 | Shirley J Clarke | 4 | Daughter | — | Iowa |
| 33 | Edward E Biggart | 50 | Head | Farmer | Iowa |
| 34 | Flora L Biggart | 44 | Wife | — | Iowa |
| 35 | Edward E Jr Biggart | 5 | Son | — | Iowa |
| 36 | Richard A Biggart | 4 | Son | — | Iowa |
| 37 | Herman D Juhl | 67 | Head | Farmer | Germany |
| 38 | Mary Juhl | 64 | Wife | — | Iowa |
| 39 | Elmer H Juhl | 25 | Son | Hired Hand | Iowa |
| 40 | Lorenz Juhl | 68 | Father | Farm Hand | Germany |
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)