DB
David Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Des-Moines-County, Iowa
Our Model Tree links this David Brown across the 1920, 1930 and 1940 US Censuses in Des-Moines-County, Iowa (XGBoost, ~Confirmed), with identified parents David & Elizabeth — first a son (b.~1894), then head of a 3-person household.
Age 46
b. ~1894
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Des-Moines-County, Iowa |
| Surname | Brown |
| Given Name | David C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Tama Twp. |
| 1935 Residence (County) | Des Moines |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Tama Twp |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to David | Age | Birth yr |
|---|---|---|---|---|
| Lila Brown | Daughter | — | 45 | ~1895 |
| Elizabeth Brown | Head | — | 84 | ~1856 |
| David Brown | Son | — | 46 | ~1894 |
Census Appearances
1920
Des Moines, …
Son, age 26
Des Moines, Iowa · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | David L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | 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
Des Moines, …
Son, age 36
Des Moines, Iowa · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | David C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Des-Moines-County, Iowa
Son, age 46
Des-Moines-County, Iowa · implied b. ~1894 — 3 household members
| Surname | Brown |
| Given Name | David C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Tama Twp. |
| 1935 Residence (County) | Des Moines |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 David Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father David Brown (~0.92 confidence) and mother Elizabeth Brown (~0.92 confidence) and mother Clara Brown (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Brown
b. ~1854
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Brown
b. ~1856
Source mother
● Household
· direct · ~0.92
Mother
Clara Brown
b. ~1857
Source mother
● Household
· direct · ~0.92
This person
Anchor record
David Brown
Son · 1940 · age 46 · b. ~1894 · Iowa
★ You are viewing this record
Sibling
Lila Brown
Sibling · 1940 · age 45
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 — Des-Moines-County, Iowa
Open full size
1940 US Federal Census — Des-Moines-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01156-00997)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bertha Dankwart | 59 | Head | Farmer | Iowa |
| 42 | Otto Gantz | 40 | Nephew | Farmer | Iowa |
| 43 | Catherine Trimble | 42 | Head | Housewife | Iowa |
| 44 | Noah Trimble | 24 | Son | Farmer | Iowa |
| 45 | Wilbur Trimble | 23 | Son | Farmer | Iowa |
| 46 | C. A. Darbyshire | 79 | Head | Farmer | Iowa |
| 47 | Ella J. Darbyshire | 72 | Wife | Housewife | Iowa |
| 48 | Archie G. Hageman | 46 | Head | Farm Laborer | Iowa |
| 49 | Nellie F. Hageman | 44 | Wife | Housewife | Iowa |
| 50 | Betty V. Hageman | 20 | Daughter | N. Y. A. | Iowa |
| 51 | Bonita J. Hageman | 15 | Daughter | — | Iowa |
| 52 | Shirley Hageman | 10 | Daughter | — | Iowa |
| 53 | Louis J. Thomson | 53 | Head | Farmer | Iowa |
| 54 | Sophia Thomson | 56 | Wife | Housewife | Iowa |
| 55 | Fredia Thomson | 30 | Daughter | Housekeeper | Iowa |
| 56 | Russell J. Walker | 41 | Head | Laborer | Iowa |
| 57 | Emma D. Walker | 39 | Wife | Housewife | Iowa |
| 58 | Ronald Walker | 18 | Son | Laborer | Iowa |
| 59 | Marjorie Ann Walker | 10 | Daughter | — | Iowa |
| 60 | August Oetken | 62 | Head | Farmer | Iowa |
| 61 | Doris Oetken | 55 | Wife | Housewife | Iowa |
| 62 | Herbert Oetken | 25 | Son | Farm Laborer | Iowa |
| 63 | Raymond Oetken | 21 | Son | Farm Laborer | Iowa |
| 64 | Alfred Oetken | 15 | Son | Farm Laborer | Iowa |
| 65 | Robert Oetken | 12 | Son | Farm Laborer | Iowa |
| 66 | Elizabeth Brown | 84 | Head | — | Iowa |
| 67 | David C. Brown THIS PERSON | 46 | Son | Farmer | Iowa |
| 68 | Lila Brown | 45 | Daughter | Housekeeper | Iowa |
| 69 | Will. C. Walker | 64 | Head | Farmer | Iowa |
| 70 | Hallie Walker | 32 | Daughter | Housekeeper | Iowa |
| 71 | Joe Walker | 67 | Head | Farmer | Iowa |
| 72 | Rachel Walker | 63 | Sister | Housekeeper | Iowa |
| 73 | Edward Oetken | 58 | Head | Farmer | Iowa |
| 74 | Mary Oetken | 50 | Wife | Housewife | Iowa |
| 75 | Dorothy Oetken | 17 | Daughter | Housewife | Iowa |
| 76 | Richard Oetken | 15 | Son | Farmer | Iowa |
| 77 | Edith Oetken | 12 | Daughter | — | Iowa |
| 78 | Sam Wagler | 57 | Head | Farmer | Kansas |
| 79 | Lillie Wagler | 50 | Wife | Housewife | Iowa |
| 80 | Orin Wagler | 19 | Son | Farmer | Iowa |
Pedigree Summary
David + 1 sibling
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)