RD
Richard Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Johnson-County, Iowa
Our Model Tree links this Richard Davis across the 1920, 1930 and 1940 US Censuses in Johnson-County, Iowa (XGBoost, ~Confirmed), with identified parents M & Mary — first a son (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Johnson-County, Iowa |
| Surname | Davis |
| Given Name | Richard H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | West Lucas |
| 1935 Residence (County) | Johnson |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 500 |
| Highest Grade | C-4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | West Lucas |
| Est. Birth Year | ~1914 |
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 Richard | Age | Birth yr |
|---|---|---|---|---|
| Gwendolyn Davis | Daughter | — | 24 | ~1916 |
| M Davis | Head | — | 61 | ~1879 |
| Richard Davis | Son | — | 26 | ~1914 |
| Wm Davis | Son | — | 21 | ~1919 |
| Mary Davis | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Johnson, Iowa
Son, age 5
Johnson, Iowa · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Richard H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Johnson, Iowa
Son, age 16
Johnson, Iowa · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Richard H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Johnson-County, Iowa
Son, age 26
Johnson-County, Iowa · implied b. ~1914 — 5 household members
| Surname | Davis |
| Given Name | Richard H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | West Lucas |
| 1935 Residence (County) | Johnson |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 500 |
| Highest Grade | C-4 |
| 1935 Residence | Iowa |
| 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 Richard Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father M Davis (~0.92 confidence) and mother Mary Davis (~0.92 confidence) and mother Mary Davis (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
M Davis
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Mary Davis
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Mary Davis
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Richard Davis
Son · 1940 · age 26 · b. ~1914 · Iowa
★ You are viewing this record
Sibling
Wm Davis
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gwendolyn Davis
Sibling · 1940 · age 24
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 — Johnson-County, Iowa
Open full size
1940 US Federal Census — Johnson-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01171-00972)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Corbett | 40 | Hired man | Laborer | Iowa |
| 42 | M. W. Davis | 61 | Head | Farmer | Iowa |
| 43 | Mary Davis | 60 | Wife | — | Iowa |
| 44 | Richard H. Davis THIS PERSON | 26 | Son | Laborer | Iowa |
| 45 | Gwendolyn Davis | 24 | Daughter | Bookkeeper | Iowa |
| 46 | Wm. J. Davis | 21 | Son | Laborer | Iowa |
| 47 | Harold Davis | 52 | Head | Farmer | Iowa |
| 48 | Elizabeth Davis | 59 | Wife | — | Iowa |
| 49 | Geo. Miller | 64 | Head | Farmer | Iowa |
| 50 | Florence Miller | 64 | Wife | — | Iowa |
| 51 | Stanley Miller | 25 | Son | Laborer | Iowa |
| 52 | Steve Kessler | 44 | Head | Salesman | Iowa |
| 53 | Magdalen Kessler | 27 | Wife | — | No. Dakota |
| 54 | M. B. Viers | 73 | Head | Farmer | Iowa |
| 55 | Emma Viers | 70 | Wife | — | Iowa |
| 56 | J. J. Lynch | 66 | Head | — | Iowa |
| 57 | Tom Lynch | 27 | Son | Laborer | Iowa |
| 58 | Donald Lynch | 22 | Son | — | Iowa |
| 59 | Clotilda Lynch | 25 | Daughter | Teacher | Iowa |
| 60 | Lillian Lynch | 21 | Daughter | Stenographer | Iowa |
| 61 | Kathleen Lynch | 15 | Daughter | — | Iowa |
| 62 | Francis Lynch | 30 | Son | Attendant | Iowa |
| 63 | C. D. Beauchamp | 31 | Head | Laborer | Iowa |
| 64 | Hanna Beauchamp | 29 | Wife | — | Iowa |
| 65 | Marion L. Beauchamp | 9 | Daughter | — | Iowa |
| 66 | Ted Beauchamp | 7 | Son | — | Iowa |
| 67 | Charlotte Beauchamp | 6 | Daughter | — | Illinois |
| 68 | Donald Beauchamp | 4 | Son | — | Nebraska |
| 69 | Janet Beauchamp | 1 | Daughter | — | Iowa |
| 70 | Geo. Reese | 78 | Head | — | New York |
| 71 | Esther Reese | 70 | Wife | — | Wales |
| 72 | Daniel O'Brien | 69 | Head | Farmer | Iowa |
| 73 | Dora O'Brien | 57 | Wife | — | New York |
| 74 | Geo. Stewart | 56 | Head | Farmer | Wisconsin |
| 75 | Nellie Stewart | 54 | Wife | — | Iowa |
| 76 | Wendell Thomas | 29 | Head | Bookkeeper | Iowa |
| 77 | Lila Thomas | 27 | Wife | — | Iowa |
| 78 | Mary Ann Thomas | 5 | Daughter | — | Iowa |
| 79 | O. B. Thomas | 53 | Head | Farmer | Iowa |
| 80 | Anna Thomas | 52 | Wife | — | Iowa |
Pedigree Summary
Richard + 2 siblings
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)