JG
John Grady — 1940 US Census Record
Model Tree available1940 United States Federal Census · Colfax-County, Nebraska
Our Model Tree links this John Grady across the 1920, 1930 and 1940 US Censuses in Colfax-County, Nebraska (XGBoost, ~Confirmed), with identified parents Richard & Frances — first a head (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Head
Born: Nebraska
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Colfax-County, Nebraska |
| Surname | Grady |
| Given Name | John F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Grant Township |
| 1935 Residence (County) | Colfax |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Occupation | Farmer |
| Township / Ward | Grant Township |
| Est. Birth Year | ~1910 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Grady | Head | — | 30 | ~1910 |
| Mary Grady | Spouse | — | 24 | ~1916 |
| Joseph Grady | Son | — | ~1940 |
Census Appearances
1920
Colfax, Nebraska
Son, age 10
Colfax, Nebraska · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grady |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1930
Colfax, Nebraska
Son, age 21
Colfax, Nebraska · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grady |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Colfax-County, Nebraska
Head, age 30
Colfax-County, Nebraska · implied b. ~1910 — 3 household members
| Surname | Grady |
| Given Name | John F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Grant Township |
| 1935 Residence (County) | Colfax |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 John Grady across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Richard Grady (~0.92 confidence) and mother Frances Grady (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Richard Grady
b. ~1858
Source father
● Household
· direct · ~0.92
Mother
Frances Grady
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Grady
Head · 1940 · age 30 · b. ~1910 · Nebraska
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Colfax-County, Nebraska
Open full size
1940 US Federal Census — Colfax-County, Nebraska
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02241-00719)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie Coufal | 67 | Wife | Housekeeper | Czechoslovakia |
| 42 | Charles Coufal | 31 | Son | Laborer | Nebraska |
| 43 | Libby Coufal | 27 | Daughter | Home Helper | Nebraska |
| 44 | John J. Koci | 62 | Head | Farmer | Czechoslovakia |
| 45 | Anna Koci | 50 | Wife | Housekeeper | Nebraska |
| 46 | John E Koci | 24 | Son | Farm Laborer | Nebraska |
| 47 | Lad. Horak | 45 | Head | Farmer | Nebraska |
| 48 | Emma Horak | 36 | Wife | Housekeeper | Nebraska |
| 49 | Leonard Horak | 15 | Son | Student | Nebraska |
| 50 | Lorene Horak | 8 | Daughter | — | Nebraska |
| 51 | Irma Horak | 5 | Daughter | — | Nebraska |
| 52 | Charles L. Foust | 60 | Head | Farmer | Nebraska |
| 53 | Jenny Foust | 64 | Wife | — | Nebraska |
| 54 | Thomas Foust | 34 | Son | Farm Laborer | Nebraska |
| 55 | Leo A. Vanicek | 60 | Head | Farmer | Nebraska |
| 56 | John F Grady THIS PERSON | 30 | Head | Farmer | Nebraska |
| 57 | Mary Grady | 24 | Wife | — | Nebraska |
| 58 | Joseph Richard Grady | 0 | Son | — | Nebraska |
| 59 | Clem Benesch | 28 | Head | Farmer | Nebraska |
| 60 | Marie Benesch | 25 | Wife | — | Nebraska |
| 61 | Valerian Benesch | 1 | Son | — | Nebraska |
| 62 | James Brady | 42 | Head | Farmer | Nebraska |
| 63 | Annetta Brady | 37 | Wife | Housekeeper | Nebraska |
| 64 | Rosemary Brady | 5 | Daughter | — | Nebraska |
| 65 | Anton B. Dolezal | 44 | Head | Farmer | Nebraska |
| 66 | Bessie E. Dolezal | 38 | Wife | Farmer | Nebraska |
| 67 | Evelyn Rose Dolezal | 14 | Daughter | Student | Nebraska |
| 68 | Eldon Leroy Dolezal | 8 | Son | — | Nebraska |
| 69 | Anton J. Slavik | 52 | Head | Farmer | Nebraska |
| 70 | Mary Slavik | 50 | Wife | Housekeeper | Nebraska |
| 71 | Gladys Slavik | 16 | Daughter | Student | Nebraska |
| 72 | Edward J. Dolezal | 31 | Head | Farmer | Nebraska |
| 73 | Mary Dolezal | 25 | Wife | Housekeeping | Nebraska |
| 74 | Albie Dolezal | 65 | Mother | — | Nebraska |
| 75 | Jerry Krejci | 36 | Head | Farmer | Nebraska |
| 76 | Elsie Krejci | 30 | Wife | Housekeeper | Nebraska |
| 77 | Ann Marie Krejci | 8 | Daughter | — | Nebraska |
| 78 | Gerald Krejci | 1 | Son | — | Nebraska |
| 79 | — | None | — | — | — |
| 80 | Ernest J. Barthe | 42 | Head | Farmer | Nebraska |
Pedigree Summary
John
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)