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Thomas Griffin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mclean-County, Illinois
Our Model Tree links this Thomas Griffin across the 1920, 1930 and 1940 US Censuses in Mclean-County, Illinois (XGBoost, ~Confirmed), with identified parents Thomas — first a head (b.~1898), then head of a 4-person household.
Age 42
b. ~1898
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mclean-County, Illinois |
| Surname | Griffin |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Blue Mound Twp |
| 1935 Residence (County) | McLean |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | G 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Blue Mound Twp |
| 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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Griffin | Head | — | 42 | ~1898 |
| Margaret Griffin | Spouse | — | 32 | ~1908 |
| Gene Griffin | Son | — | 6 | ~1934 |
| Gerald Griffin | Son | — | 5 | ~1935 |
Census Appearances
1920
Mclean, Illinois
Son, age 23
Mclean, Illinois · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Home farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Mclean, Illinois
Son, age 33
Mclean, Illinois · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Irish Free State |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | E |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mclean-County, Illinois
Head, age 42
Mclean-County, Illinois · implied b. ~1898 — 4 household members
| Surname | Griffin |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Blue Mound Twp |
| 1935 Residence (County) | McLean |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | G 8 |
| 1935 Residence | Illinois |
| 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 Thomas Griffin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Griffin (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Griffin
b. ~1864
Source father
● Household
· direct · ~0.92
This person
Anchor record
Thomas Griffin
Head · 1940 · age 42 · b. ~1898 · 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 — Mclean-County, Illinois
Open full size
1940 US Federal Census — Mclean-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00842-00018)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorlene Sutter | 11 | Daughter | — | Illinois |
| 42 | Drepel Phillips | 27 | Head | Laborer | Illinois |
| 43 | Velda Phillips | 23 | Wife | — | Illinois |
| 44 | Lois Phillips | 4 | Daughter | — | Illinois |
| 45 | Judith Phillips | 2 | Daughter | — | Illinois |
| 46 | Robert Phillips | None | Son | — | Illinois |
| 47 | Otto Morris | 54 | Head | Farmer | Kansas |
| 48 | Mabel Morris | 52 | Wife | — | Missouri |
| 49 | Jerry Shea | 58 | Head | Farmer | Illinois |
| 50 | Thomas Griffin THIS PERSON | 42 | Head | Farmer | Illinois |
| 51 | Margaret Griffin | 32 | Wife | — | Illinois |
| 52 | Gene Griffin | 6 | Son | — | Illinois |
| 53 | Gerald Griffin | 5 | Son | — | Illinois |
| 54 | Fred Kerber | 70 | Head | Farmer | Germany |
| 55 | Elizabeth Kerber | 50 | Wife | — | Germany |
| 56 | Robert Kerber | 24 | Son | Farmer | Illinois |
| 57 | Gertrude Murray | 52 | Lodger | — | Illinois |
| 58 | Marjorie Murray | 17 | Lodger | — | Illinois |
| 59 | Edward Kerber | 45 | Head | Farmer | Illinois |
| 60 | Roseann Kerber | 43 | Wife | — | Illinois |
| 61 | Mary Agnes Kerber | 20 | Daughter | — | Illinois |
| 62 | Veronica Kerber | 17 | Daughter | — | Illinois |
| 63 | Ellen Ann Kerber | 14 | Daughter | — | Illinois |
| 64 | Eugene Kerber | 11 | Son | — | Illinois |
| 65 | Leonard Daughtery | 39 | Head | Farmer | Kentucky |
| 66 | Edna Daughtery | 31 | Wife | — | Illinois |
| 67 | Roy Daughtery | 12 | Son | — | Illinois |
| 68 | Jessie Daughtery | 10 | Son | — | Illinois |
| 69 | Edith Daughtery | 8 | Daughter | — | Illinois |
| 70 | James Daughtery | 6 | Son | — | Illinois |
| 71 | Ernest Daughtery | 4 | Son | — | Illinois |
| 72 | Merrill Daughtery | 2 | Son | — | Illinois |
| 73 | Frank Wells | 16 | Lodger | Laborer | Illinois |
| 74 | Chrus Hauser | 70 | Head | — | Germany |
| 75 | Hulda Hauser | 65 | Wife | — | Illinois |
| 76 | Lester Hauser | 36 | Son | Farmer | Illinois |
| 77 | Elma Hauser | 31 | Daughter | Farmer | Illinois |
| 78 | Charles Martin | 64 | Head | — | Illinois |
| 79 | M. Elizabeth Martin | 62 | Wife | — | Illinois |
Related Census Records
Pedigree Summary
Thomas
Gen 1 · 1 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)