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Mary Bradley — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allamakee-County, Iowa
Our Model Tree links this Mary Bradley across the 1920, 1930 and 1940 US Censuses in Allamakee-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 2-person household.
Age 76
b. ~1864
Female
Head
Born: Minnesota
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Allamakee-County, Iowa |
| Surname | Bradley |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Minnesota |
| 1935 Residence (City) | Lansing town |
| 1935 Residence (County) | Allamakee |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Lansing Town |
| Est. Birth Year | ~1864 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Bradley | Head | — | 76 | ~1864 |
| Lealy Bradley | Son | — | 46 | ~1894 |
Census Appearances
1920
Allamakee, Iowa
Spouse, age 50
Allamakee, Iowa · implied b. ~1870 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Allamakee, Iowa
Spouse, age 61
Allamakee, Iowa · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Allamakee-County, Iowa
Head, age 76
Allamakee-County, Iowa · implied b. ~1864 — 2 household members
| Surname | Bradley |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Minnesota |
| 1935 Residence (City) | Lansing town |
| 1935 Residence (County) | Allamakee |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Bradley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Bradley
Head · 1940 · age 76 · b. ~1864 · 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 — Allamakee-County, Iowa
Open full size
1940 US Federal Census — Allamakee-County, Iowa
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01136-00906)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Schaefer | 60 | Head | Salesman | Iowa |
| 42 | Annetta Schaefer | 54 | Sister | Primary Teacher | Iowa |
| 43 | Bertha Schaefer | 61 | Sister | — | Iowa |
| 44 | James Morris | 62 | Head | — | Iowa |
| 45 | Ann Morris | 59 | Wife | — | Iowa |
| 46 | Charles E. Leport | 55 | Head | — | Iowa |
| 47 | Emma F. Leport | 49 | Wife | — | Iowa |
| 48 | Frances L. Leport | 10 | Daughter | — | Chicago, Ill |
| 49 | Lilly Bauman | 79 | Head | — | Iowa |
| 50 | Ida Bauman | 52 | Daughter | — | Iowa |
| 51 | Freda Bauman | 68 | Sister | — | Iowa |
| 52 | Mrs. Robert Stauffer | 32 | Head | Saleslady | Iowa |
| 53 | Monty Gruber | 64 | Head | Minister | Iowa |
| 54 | Gruber | 61 | Wife | — | Iowa |
| 55 | Charles M. Kernell | 72 | Head | — | Iowa |
| 56 | Theodore Kernell | 44 | Son | Cashier | Iowa |
| 57 | Lydia Kernell | 40 | Daughter-in-law | Saleswoman | Iowa |
| 58 | Patricia Kernell | 15 | Granddaughter | — | Iowa |
| 59 | Anthony Kernell | 10 | Grandson | — | Wisconsin |
| 60 | Rose M. Peterson | 20 | Granddaughter | — | Iowa |
| 61 | Mary A. Bradley THIS PERSON | 76 | Head | — | Minnesota |
| 62 | Lealy F. Bradley | 46 | Son | — | Iowa |
| 63 | Myra Aiken | 54 | Head | — | Don't Know |
| 64 | Robert Spencer | 26 | Head | Collector | Iowa |
| 65 | Helen Spencer | 27 | Wife | Sales Lady | Iowa |
| 66 | Richard Spencer | 1 | Son | — | Iowa |
| 67 | Susan Lefebre | 51 | Head | — | Wisconsin |
| 68 | Emma Fritz | 73 | Head | — | Germany |
| 69 | Emma Fritz | 43 | Daughter | — | Iowa |
| 70 | Lydia Fritz | 40 | Daughter | — | Iowa |
| 71 | James Powers | 29 | Head | Stenographer | Iowa |
| 72 | Dora Powers | 31 | Wife | Bridge Carpenter | Iowa |
| 73 | John Powers | 3 | Son | — | Iowa |
| 74 | Maureen Powers | 2 | Daughter | — | Iowa |
| 75 | Eugene Breenan | 46 | Head | Contractor | Iowa |
| 76 | Dorothy Breenan | 44 | Wife | — | Iowa |
| 77 | Margaret M. Breenan | 11 | Daughter | — | Iowa |
| 78 | Daniel J. Breenan | 7 | Son | — | Wisconsin |
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)