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Mary Brady — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Iowa
Our Model Tree links this Mary Brady across the 1920, 1930 and 1940 US Censuses in Boone-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1861), then head of a 4-person household.
Age 79
b. ~1861
Female
Head
Born: Indiana
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Iowa |
| Surname | Brady |
| Given Name | Mary E. |
| Relationship to Head | head |
| Sex | F |
| Color / Race | White |
| Age | 79 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Boone City |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Class of Worker | 75 |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Boone City |
| Est. Birth Year | ~1861 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Ella Brady | Daughter | — | 53 | ~1887 |
| Mary Brady | Head | — | 79 | ~1861 |
| Patrick Brady | Son | — | 45 | ~1895 |
| Lloyd Brady | Son | — | 47 | ~1893 |
Census Appearances
1920
Boone, Iowa
Head, age 58
Boone, Iowa · implied b. ~1862 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brady |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| Father's Birthplace | New York |
| Mother's Birthplace | Canada |
| Occupation | Dressmaker |
| Industry | Own home |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Boone, Iowa
Head, age 69
Boone, Iowa · implied b. ~1861 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brady |
| Given Name | Mary G |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| Father's Birthplace | New York |
| Mother's Birthplace | Canada-Eng |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 1000 |
| Radio Set | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Boone-County, Iowa
Head, age 79
Boone-County, Iowa · implied b. ~1861 — 4 household members
| Surname | Brady |
| Given Name | Mary E. |
| Relationship to Head | head |
| Sex | F |
| Color / Race | White |
| Age | 79 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Boone City |
| 1935 Residence (County) | Boone |
| Class of Worker | 75 |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Brady 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 Brady
Head · 1940 · age 79 · b. ~1861 · 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 — Boone-County, Iowa
Open full size
1940 US Federal Census — Boone-County, Iowa
Page Contents
18 people indexed on this census page (nara:1940:m-t0627-01141-00377)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Velma M. Wisecup | 25 | wife | — | Iowa |
| 2 | Emma Belle Wisecup | 8 | daughter | — | Iowa |
| 3 | Roger James Wisecup | 7 | son | — | Iowa |
| 4 | Leo Jr. Wisecup | 4 | son | — | Iowa |
| 5 | Raymond A. Ades | 32 | head | Truck Driver | Iowa |
| 6 | Zetta Einole|Eunice Ades | 33 | wife | — | Iowa |
| 7 | Nancy Rae Ades | 12 | daughter | — | Iowa |
| 8 | Mary E. Brady THIS PERSON | 79 | head | — | Indiana |
| 9 | Ella Mae Brady | 53 | daughter | — | Iowa |
| 10 | Lloyd P. Brady | 47 | son | Laborer | Iowa |
| 11 | Patrick Brady | 45 | son | Farm Laborer | Iowa |
| 12 | Laverne Carlson | 24 | head | Carpenter | Iowa |
| 13 | Ada M. Carlson | 20 | wife | Chicken Picker | Iowa |
| 14 | Henry A. Richards | 62 | head | — | Iowa |
| 15 | Agnes Richards | 61 | wife | — | Iowa |
| 16 | Emery D. Ewalt | 43 | head | Appliance Salesman | Iowa |
| 17 | Mabel M. Ewalt | 42 | wife | — | Kansas |
| 18 | Dolores J. Ewalt | 18 | 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)