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Margaret Hart — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cerro-Gordo-County, Iowa
Our Model Tree links this Margaret Hart across the 1920, 1930 and 1940 US Censuses in Cerro-Gordo-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1875), then head of a 4-person household.
Age 65
b. ~1875
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cerro-Gordo-County, Iowa |
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Mount Vernon twp |
| 1935 Residence (County) | Linn |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Mount Vernon Twp |
| Est. Birth Year | ~1875 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Morris Hart | Son | — | 31 | ~1909 |
| Robert Hart | Head | — | 66 | ~1874 |
| Margaret Hart | Spouse | — | 65 | ~1875 |
| Helen Hart | Daughter | — | 25 | ~1915 |
Census Appearances
1920
Cerro Gordo, …
Spouse, age 45
Cerro Gordo, Iowa · implied b. ~1875 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cerro Gordo, …
Spouse, age 53
Cerro Gordo, Iowa · implied b. ~1877 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 33 |
| Father's Birthplace | England |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cerro-Gordo-County, Iowa
Spouse, age 65
Cerro-Gordo-County, Iowa · implied b. ~1875 — 4 household members
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Mount Vernon twp |
| 1935 Residence (County) | Linn |
| Highest Grade | No 8 |
| 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 Margaret Hart across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Hart
Spouse · 1940 · age 65 · b. ~1875 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cerro-Gordo-County, Iowa
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1940 US Federal Census — Cerro-Gordo-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01146-01159)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wayne D. Barlow | 29 | Head | Farming | Iowa |
| 2 | Ada Barlow | 27 | Wife | — | Iowa |
| 3 | Gay Barlow | 2 | Daughter | — | Iowa |
| 4 | George A. Patel | 58 | Head | Farming | Iowa |
| 5 | Edith Patel | 55 | Wife | — | Iowa |
| 6 | John Patel | 20 | Son | Farming | Iowa |
| 7 | Elmer D. Hanson | 20 | Head | Farming | Iowa |
| 8 | Doris Hanson | 30 | Wife | — | Iowa |
| 9 | Janice Hanson | 2 | Daughter | — | Iowa |
| 10 | Roger D. Christensen | 34 | Head | Farming | Denmark |
| 11 | Johanna Christensen | 24 | Wife | — | Missouri |
| 12 | Barbara Christensen | 1 | Daughter | — | Iowa |
| 13 | Robert J. Hart | 66 | Head | Farming | Iowa |
| 14 | Margaret Hart THIS PERSON | 65 | Wife | — | Iowa |
| 15 | Morris Hart | 31 | Son | Barber | Minnesota |
| 16 | Helen Hart | 25 | Daughter | Teaching | Iowa |
| 17 | John D. Hart | 27 | Head | Laborer | Iowa |
| 18 | Gertrude Hart | 22 | Wife | — | Iowa |
| 19 | Mary Ellen Hart | 1 | Daughter | — | Iowa |
| 20 | Melvin D. Barlow | 29 | Head | Farming | Iowa |
| 21 | Ruby Barlow | 30 | Wife | — | Iowa |
| 22 | Lloyd Bonner | 31 | Head | Farming | Iowa |
| 23 | Velma G. Bonner | 27 | Wife | — | Missouri |
| 24 | Donald Bonner | 8 | Son | — | Iowa |
| 25 | William D. Hoden | 68 | Head | Farming | Iowa |
| 26 | Margaret Hoden | 60 | Wife | — | Illinois |
| 27 | Margaret Hoden | 29 | Daughter | Teaching | Iowa |
| 28 | Auguste Van Laere | 42 | Head | Farming | Holland |
| 29 | Cora B. Swab | 46 | Head | Farming | Iowa |
| 30 | Marjorie Swab | 51 | Daughter | — | Iowa |
| 31 | John Swab | 14 | Son | — | Iowa |
| 32 | Fred D. Draybill | 37 | Head | Farming | England |
| 33 | Hazel Draybill | 39 | Wife | Farming | Iowa |
| 34 | Riley Allen | 37 | Hired hand | Laborer | Iowa |
| 35 | Mary Allen | 29 | Hired hand | — | Iowa |
| 36 | John Allen | 5 | Hired hand | — | Iowa |
| 37 | Irene Allen | 3 | Hired hand | — | Iowa |
| 38 | Jacob D. Hill | 59 | Head | Farming | Illinois |
| 39 | Mary Hill | 65 | Wife | — | Illinois |
| 40 | Clifford Hill | 29 | Son | Laborer | 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)