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Betty Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marshall-County, Iowa
Our Model Tree links this Betty Davis across the 1930 and 1940 US Censuses in Marshall-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marshall-County, Iowa |
| Surname | Davis |
| Given Name | Betty Jean |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Marshalltown |
| 1935 Residence (County) | Marshall |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Marshalltown |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Betty Davis | Daughter | — | 11 | ~1929 |
| Edna Davis | Daughter | — | 13 | ~1927 |
| Earnest Davis | Head | — | 32 | ~1908 |
| Robert Davis | Son | — | 5 | ~1935 |
| Donald Davis | Son | — | 3 | ~1937 |
| Earnest Davis | Son | — | 10 | ~1930 |
| Harry Davis | Son | — | 7 | ~1933 |
| Elsie Davis | Spouse | — | 30 | ~1910 |
Census Appearances
1930
Marshall, Iowa
Daughter, age 1
Marshall, Iowa · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| 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
Marshall-County, Iowa
Daughter, age 11
Marshall-County, Iowa · implied b. ~1929 — 8 household members
| Surname | Davis |
| Given Name | Betty Jean |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Marshalltown |
| 1935 Residence (County) | Marshall |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 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 Betty Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Davis
Daughter · 1940 · age 11 · b. ~1929 · Iowa
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Sibling
Edna Davis
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Davis
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Davis
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earnest Davis
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Davis
Sibling · 1940 · age 7
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 — Marshall-County, Iowa
Open full size
1940 US Federal Census — Marshall-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01182-00749)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Louis Thompson | 22 | Son | — | Iowa |
| 42 | Thomas Thompson | 19 | Son | — | Iowa |
| 43 | Mary Thompson | 16 | Daughter | — | Iowa |
| 44 | Earnest Scheidt | 50 | Head | Driver | Iowa |
| 45 | Mary (X) Scheidt | 31 | Wife | Laborer | Wisconsin |
| 46 | William Scheidt | 12 | Son | — | Wisconsin |
| 47 | Agnes Scheidt | 11 | Daughter | — | Iowa |
| 48 | Alvin Scheidt | 9 | Son | — | Iowa |
| 49 | Betty Scheidt | 6 | Daughter | — | Iowa |
| 50 | Donald Scheidt | 3 | Son | — | Iowa |
| 51 | Albert (X) Street | 43 | Head | Janitor | Tennessee |
| 52 | Magdalen Williams | 21 | Lodger | — | Iowa |
| 53 | Lenore Mccree | 62 | Lodger | Housework | Texas |
| 54 | Earnest Davis | 32 | Head | Steel Worker | Iowa |
| 55 | Elsie (X) Davis | 30 | Wife | — | Iowa |
| 56 | Edna Davis | 13 | Daughter | — | Iowa |
| 57 | Betty Jean Davis THIS PERSON | 11 | Daughter | — | Iowa |
| 58 | Earnest Jr Davis | 10 | Son | — | Iowa |
| 59 | Harry Davis | 7 | Son | — | Iowa |
| 60 | Robert Davis | 5 | Son | — | Iowa |
| 61 | Donald Davis | 3 | Son | — | Iowa |
| 62 | Roy Karr | 55 | Head | Street Widening | Illinois |
| 63 | Ethel (X) Karr | 54 | Wife | — | Iowa |
| 64 | Leo Karr | 17 | Son | Mechanic | Minnesota |
| 65 | Walter Karr | 14 | Son | — | Minnesota |
| 66 | Mauren Doren | 9 | Grandchild | — | Iowa |
| 67 | Ealy Morrow | 50 | Head | Laborer | Alabama |
| 68 | Leena (X) Morrow | 51 | Wife | Laundry | Alabama |
| 69 | John Hodgson | 56 | Head | Brick Layer | England |
| 70 | Myrtle (X) Hodgson | 56 | Wife | — | Iowa |
| 71 | Blaine Bernard | 26 | Head | Spot Welder | Iowa |
| 72 | Virginia Bernard | 24 | Wife | Checker | Iowa |
| 73 | Verma (X) Bernard | 50 | Mother | Scrub Woman | Iowa |
| 74 | Maryan Bernard | 14 | Sister | — | Iowa |
| 75 | Bernard Bernard | 17 | Brother | — | Iowa |
| 76 | Enoch Watson | 70 | Head | (Pension) | Iowa |
| 77 | Cora (X) Watson | 70 | Wife | — | Nebraska |
| 78 | Gladys (X) Davis | 28 | Head | — | Iowa |
| 79 | Shirley Davis | 8 | Daughter | — | 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)