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Thelma Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Livingston-County, Michigan
Our Model Tree links this Thelma Davis across the 1920, 1930 and 1940 US Censuses in Livingston-County, Michigan (XGBoost, ~Confirmed), with identified parents Frank & Mable — first a daughter (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Livingston-County, Michigan |
| Surname | Davis |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Genoa Twp |
| 1935 Residence (County) | Livingston |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Genoa Twp |
| Est. Birth Year | ~1919 |
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 Thelma | Age | Birth yr |
|---|---|---|---|---|
| Thelma Davis | Daughter | — | 21 | ~1919 |
| Frank Davis | Head | — | 52 | ~1888 |
| Mable Davis | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Livingston, Michigan
Daughter, age
Livingston, Michigan · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | New York |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Livingston, Michigan
Daughter, age 10
Livingston, Michigan · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Thelma A |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Livingston-County, Michigan
Daughter, age 21
Livingston-County, Michigan · implied b. ~1919 — 3 household members
| Surname | Davis |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Genoa Twp |
| 1935 Residence (County) | Livingston |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Thelma Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Davis (~0.92 confidence) and mother Mable Davis (~0.92 confidence) and mother Mable Davis (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Davis
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Mable Davis
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Mable Davis
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thelma Davis
Daughter · 1940 · age 21 · b. ~1919 · Michigan
★ 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 — Livingston-County, Michigan
Open full size
1940 US Federal Census — Livingston-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01780-00163)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vernon Meyers | 42 | Lodger | Grocery Store | Michigan |
| 42 | Frank L. Davis | 52 | Head | Engineer | Michigan |
| 43 | Mable Davis | 47 | Wife | — | Michigan |
| 44 | Thelma Davis THIS PERSON | 21 | Daughter | — | Michigan |
| 45 | Paul E. Brogan | 62 | Head | Concession Operator | Michigan |
| 46 | Margaret Brogan | 46 | Sister | Secretary | Michigan |
| 47 | Rudy F. Bowers | 38 | Head | Arboriculturist | Michigan |
| 48 | Evelyn Bowers | 34 | Wife | — | Michigan |
| 49 | Clare J. Bowers | 39 | Head | Laborer | Michigan |
| 50 | Viola Bowers | 35 | Wife | — | Michigan |
| 51 | Phyllis Bowers | 16 | Daughter | — | Michigan |
| 52 | Harrison Bowers | 13 | Daughter | — | Michigan |
| 53 | Emeline Bowers | 11 | Daughter | — | Michigan |
| 54 | Robert Bowers | 10 | Son | — | Michigan |
| 55 | Jacline Bowers | 4 | Daughter | — | Michigan |
| 56 | Virgil Tompkins | 29 | Head | Tractor Driver | Michigan |
| 57 | Florence Tompkins | 24 | Wife | — | Alabama |
| 58 | Alma Tompkins | 5 | Daughter | — | Michigan |
| 59 | Charles Dautherat | 62 | Head | Farm Operator | Michigan |
| 60 | Irene Dautherat | 63 | Wife | — | Michigan |
| 61 | Clair T. Watters | 42 | Head | Carpenter | Michigan |
| 62 | Mystel Watters | 38 | Wife | — | Michigan |
| 63 | Laurence Watters | 19 | Son | Farm Hand | Michigan |
| 64 | Le Roy Watters | 17 | Son | Farm Hand | Michigan |
| 65 | Richard Watters | 14 | Son | — | Michigan |
| 66 | Orville Watters | 11 | Son | — | Michigan |
| 67 | Glenn Watters | 6 | Son | — | Michigan |
| 68 | Bruce Watters | 3 | Son | — | Michigan |
| 69 | Clarence Watters | 12 | Son | — | Michigan |
| 70 | La Verne Perry | 34 | Head | Coal Loader | Michigan |
| 71 | Margaret Perry | 26 | Wife | — | Ohio |
| 72 | Alvin V. Boglan | 71 | Head | — | Michigan |
| 73 | Benjamin J. Delorey | 39 | Head | Truck Driver | Canada French |
| 74 | Beatrice Delorey | 27 | Wife | — | Michigan |
| 75 | Marvel J. Delorey | 5 | Daughter | — | Michigan |
| 76 | Harry D. Delorey | 3 | Son | — | Michigan |
| 77 | Arthur J. Musch | 71 | Head | Laborer | Michigan |
| 78 | Merlyn W. Viles | 27 | Head | Trimmer | Michigan |
| 79 | Laila M. Viles | 28 | Wife | — | Georgia |
| 80 | George P. Bigler | 68 | Head | Engineer | Ohio |
Pedigree Summary
Thelma
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)