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Betty Brown — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Buchanan-County, Iowa
Our Model Tree links this Betty Brown across the 1930 and 1940 US Censuses in Buchanan-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Buchanan-County, Iowa |
| Surname | Brown |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Jesup Town |
| 1935 Residence (County) | Buchanan |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Jesup Town |
| Est. Birth Year | ~1929 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Grace Brown | Daughter | — | 3 | ~1937 |
| Clara Brown | Daughter | — | 13 | ~1927 |
| Pearl Brown | Daughter | — | 8 | ~1932 |
| Ada Brown | Daughter | — | 5 | ~1935 |
| Betty Brown | Daughter | — | 11 | ~1929 |
| Corydon Brown | Head | — | 44 | ~1896 |
| Duane Brown | Son | — | ~1940 | |
| William Brown | Son | — | 15 | ~1925 |
| Roy Brown | Son | — | 17 | ~1923 |
| Grace Brown | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Buchanan, Iowa
Daughter, age 1
Buchanan, Iowa · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Betty J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Buchanan-County, Iowa
Daughter, age 11
Buchanan-County, Iowa · implied b. ~1929 — 10 household members
| Surname | Brown |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Jesup Town |
| 1935 Residence (County) | Buchanan |
| Highest Grade | 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 Betty Brown across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Brown
Daughter · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Duane Brown
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Brown
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Brown
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pearl Brown
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ada Brown
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Brown
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roy Brown
Sibling · 1940 · age 17
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 — Buchanan-County, Iowa
Open full size
1940 US Federal Census — Buchanan-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01142-00887)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert W. G. Jacobsen | 26 | Head | Operator | Iowa |
| 2 | Bertha Jacobsen | 27 | Wife | — | Iowa |
| 3 | Willis Jr. Jacobsen | 2 | Son | — | Iowa |
| 4 | Edwin W. Donaldson | 67 | Head | — | Iowa |
| 5 | Katherine Donaldson | 60 | Wife | — | England |
| 6 | Le Roy Donaldson | 29 | Son | Refrigerator Room | Iowa |
| 7 | Doris Donaldson | 27 | Daughter-in-law | — | Iowa |
| 8 | Gary Donaldson | 1 | Grandson | — | Iowa |
| 9 | Infant Donaldson | 0 | Granddaughter | — | Iowa |
| 10 | Corydon H. Brown | 44 | Head | Road Maintenance | Illinois |
| 11 | Grace Brown | 40 | Wife | — | Iowa |
| 12 | Roy Brown | 17 | Son | Farm Laborer | Iowa |
| 13 | William Brown | 15 | Son | — | Iowa |
| 14 | Clara Brown | 13 | Daughter | — | Iowa |
| 15 | Betty Brown THIS PERSON | 11 | Daughter | — | Iowa |
| 16 | Pearl Brown | 8 | Daughter | — | Iowa |
| 17 | Ada Brown | 5 | Daughter | — | Iowa |
| 18 | Grace Brown | 3 | Daughter | — | Iowa |
| 19 | Duane Brown | 0 | Son | — | Iowa |
| 20 | Alfred J. Welsch | 52 | Head | Proprietor | Iowa |
| 21 | Goldie Welsch | 38 | Wife | — | Iowa |
| 22 | Regina Welsch | 11 | Daughter | — | Iowa |
| 23 | Clark D. Allen | 47 | Head | — | Iowa |
| 24 | Lucy Jane Allen | 82 | Mother | — | South Dakota |
| 25 | Irene Marsau | 25 | Lodger | Grade Teacher | Iowa |
| 26 | Elnora R. Parker | 79 | Head | — | Iowa |
| 27 | Leonard J. Reiter | 59 | Head | City Marshal | Germany |
| 28 | Meta Reiter | 56 | Wife | — | Iowa |
| 29 | Emma Place | 70 | Head | — | Iowa |
| 30 | Leon Lewis | 30 | Son-in-law | Machinist | Iowa |
| 31 | Marjorie Lewis | 31 | Daughter | — | Iowa |
| 32 | Richard Lewis | 8 | Grandson | — | Iowa |
| 33 | Sandra Lewis | 1 | Granddaughter | — | Iowa |
| 34 | Frank H. Hawley | 47 | Head | Laborer | Iowa |
| 35 | Florence S. Hawley | 52 | Wife | — | Iowa |
| 36 | Clarice M. Hawley | 22 | Daughter | Relief Operator | Iowa |
| 37 | Ellen R. Leane | 82 | Head | — | Iowa |
| 38 | Gudine, Mary Ann Leane | 80 | Sister | — | Iowa |
| 39 | Lewis M. Roberts | 49 | Head | Meat Cutter | Illinois |
| 40 | Freda Roberts | 47 | Wife | — | Iowa |
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)