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Mary Abbott — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, Iowa
Our Model Tree links this Mary Abbott across the 1930 and 1940 US Censuses in Union-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 | Union-County, Iowa |
| Surname | Abbott |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sand Creek TWP |
| 1935 Residence (County) | Union County |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Sand Creek Twp |
| 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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mayme Abbott | Spouse | — | 47 | ~1893 |
| John Abbott | Son | — | 23 | ~1917 |
| Edward Abbott | Head | — | 57 | ~1883 |
| Mary Abbott | Daughter | — | 11 | ~1929 |
| Edward Abbott | Son | — | 16 | ~1924 |
| Lloyd Abbott | Son | — | 14 | ~1926 |
| Robert Abbott | Son | — | 18 | ~1922 |
| Dorothy Abbott | Daughter | — | 20 | ~1920 |
Census Appearances
1930
Union, Iowa
Daughter, age 1
Union, Iowa · implied b. ~1929 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Abbott |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Union-County, Iowa
Daughter, age 11
Union-County, Iowa · implied b. ~1929 — 8 household members
| Surname | Abbott |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sand Creek TWP |
| 1935 Residence (County) | Union County |
| Class of Worker | 0 |
| Highest Grade | 5 |
| 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 Mary Abbott across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Abbott
Daughter · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Dorothy Abbott
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Abbott
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Abbott
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lloyd Abbott
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Abbott
Sibling · 1940 · age 23
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 — Union-County, Iowa
Open full size
1940 US Federal Census — Union-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01208-00419)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John C. Owens | 72 | Head | — | Iowa |
| 42 | Leta M. Owens | 40 | Wife | — | Illinois |
| 43 | Patrick D. Owens | 6 | Son | — | Iowa |
| 44 | Irvin R. Owens | 60 | Head | Farmer | Iowa |
| 45 | Pearl A. Owens | 54 | Wife | — | Iowa |
| 46 | Fred C. Cheers | 69 | Head | Farmer | Iowa |
| 47 | Wayne A. Cheers | 24 | Wife | Farmer | Iowa |
| 48 | Merle R. Wilson | 22 | Head | Farmer | Iowa |
| 49 | Vivian M. Wilson | 20 | Wife | — | Iowa |
| 50 | Freeman F. Coen | 25 | Head | Farmer | Iowa |
| 51 | Opal M. Coen | 27 | Wife | — | Missouri |
| 52 | Edward B. Abbott | 57 | Head | Farmer | Iowa |
| 53 | Mayme I. Abbott | 47 | Wife | — | Iowa |
| 54 | John B. Abbott | 23 | Son | Farm Laborer | Iowa |
| 55 | Dorothy M. Abbott | 20 | Daughter | — | Iowa |
| 56 | Robert D. Abbott | 18 | Son | Farmer | Iowa |
| 57 | Edward W. Abbott | 16 | Son | — | Iowa |
| 58 | Lloyd D. Abbott | 14 | Son | — | Iowa |
| 59 | Mary L. Abbott THIS PERSON | 11 | Daughter | — | Iowa |
| 60 | Marion D. Sweet | 36 | Head | Farmer | Iowa |
| 61 | Viola B. Sweet | 38 | Wife | — | Iowa |
| 62 | Everett C. Sweet | 15 | Son | — | Iowa |
| 63 | Francis E. Sweet | 14 | Son | — | Iowa |
| 64 | Charles F. Campbell | 66 | Head | Farmer | Iowa |
| 65 | Olive V. Campbell | 62 | Wife | — | Iowa |
| 66 | Ellis F. Haight | 40 | Head | Farmer | Iowa |
| 67 | Berniece E. Haight | 30 | Wife | — | Iowa |
| 68 | Dale F. Haight | 2 | Son | — | Iowa |
| 69 | Charles Miller | 52 | Head | Farmer | Iowa |
| 70 | Jessie M. Miller | 57 | Wife | — | Iowa |
| 71 | Ruth G. Miller | 15 | Daughter | — | Iowa |
| 72 | Charles W. Miller | 14 | Son | — | Iowa |
| 73 | Kirk A. Brown | 46 | Head | Farmer | Michigan |
| 74 | Helen B. Brown | 38 | Wife | — | Minnesota |
| 75 | Floyd W. Brown | 13 | Son | — | Iowa |
| 76 | Eva M. Brown | 11 | Daughter | — | Iowa |
| 77 | Elizabeth J. Brown | 8 | Daughter | — | Iowa |
| 78 | Patricia B. Brown | 2 | Daughter | — | Iowa |
| 79 | Selma O. Lindquist | 58 | Head | Farmer | Iowa |
| 80 | Mary R. Lindquist | 58 | Wife | — | Illinois |
Related Census Records
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)