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John Grady — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bibb-County, Alabama
Our Model Tree links this John Grady across the 1930 and 1940 US Censuses in Bibb-County, Alabama (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Male
Son
Born: Alabama
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bibb-County, Alabama |
| Surname | Grady |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Beat 11 |
| 1935 Residence (County) | Bibb |
| Additional Details | |
| Occupation | Night Watchman |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Night Watchman |
| Township / Ward | Beat 11 |
| Est. Birth Year | ~1920 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Grady | Son | — | 20 | ~1920 |
| George Grady | Son | — | 24 | ~1916 |
| Julius Grady | Son | — | 26 | ~1914 |
| Herbert Grady | Son | — | 11 | ~1929 |
| Henry Grady | Head | — | 50 | ~1890 |
| Lula Grady | Spouse | — | 50 | ~1890 |
| Hettie Grady | Daughter | — | 17 | ~1923 |
| Peggy Grady | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Bibb, Alabama
Son, age 10
Bibb, Alabama · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grady |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Bibb-County, Alabama
Son, age 20
Bibb-County, Alabama · implied b. ~1920 — 8 household members
| Surname | Grady |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Beat 11 |
| 1935 Residence (County) | Bibb |
| Occupation | Night Watchman |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Grady
Son · 1940 · age 20 · b. ~1920 · Alabama
★ You are viewing this record
Sibling
Julius Grady
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Grady
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hettie Grady
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peggy Grady
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Grady
Sibling · 1940 · age 24
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 — Bibb-County, Alabama
Open full size
1940 US Federal Census — Bibb-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00004-00495)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ella Perry | 39 | Wife | — | Alabama |
| 42 | M. C. Perry | 18 | Son | New Worker | Alabama |
| 43 | Kathleen Perry | 16 | Daughter | — | Alabama |
| 44 | Pauline Perry | 14 | Daughter | — | Alabama |
| 45 | Annie M. Perry | 11 | Daughter | — | Alabama |
| 46 | Lyda Perry | 9 | Daughter | — | Alabama |
| 47 | John L. Perry | 8 | Son | — | Alabama |
| 48 | Jean Perry | 5 | Daughter | — | Alabama |
| 49 | Lucie Perry | 3 | Daughter | — | Alabama |
| 50 | Vance Perry | 2 | Son | — | Alabama |
| 51 | Henry Grady | 50 | Head | Proprietor | Alabama |
| 52 | Lula Grady | 50 | Wife | — | Alabama |
| 53 | Julius Grady | 26 | Son | Operator | Alabama |
| 54 | George Grady | 24 | Son | — | Alabama |
| 55 | John Grady THIS PERSON | 20 | Son | Night Watchman | Alabama |
| 56 | Hettie Grady | 17 | Daughter | — | Alabama |
| 57 | Herbert Grady | 11 | Son | — | Alabama |
| 58 | Peggy Grady | 9 | Daughter | — | Alabama |
| 59 | Walter Griffith | 26 | Head | Coal Digger | Alabama |
| 60 | Vernon Griffith | 28 | Wife | — | Alabama |
| 61 | Alton Griffith | 1 | Son | — | Alabama |
| 62 | Jane Colburn | 78 | Head | Direct Relief | Alabama |
| 63 | Percy Reed | 39 | Head | Mechanic | Alabama |
| 64 | Maye Reed | 36 | Wife | — | Alabama |
| 65 | Marion Reed | 11 | Son | — | Alabama |
| 66 | Charlotte Ann Reed | 7 | Daughter | — | Alabama |
| 67 | John H. Roach | 31 | Head | Laborer | Alabama |
| 68 | Teresa Roach | 29 | Wife | — | Alabama |
| 69 | Sally Jo Roach | 3 | Daughter | — | Alabama |
| 70 | Ethel Reach | 49 | Head | — | Alabama |
| 71 | Hewitt Reach | 28 | Son | Car Knocker | Alabama |
| 72 | Willard Reach | 24 | Son | Timber Cutter | Alabama |
| 73 | Earline Reach | 17 | Daughter | — | Alabama |
| 74 | Madine Reach | 15 | Daughter | — | Alabama |
| 75 | Viola Reach | 24 | Daughter | — | Alabama |
| 76 | Willard Jr. Reach | 2 | Grandson | — | Alabama |
| 77 | Carolyn Reach | 5 | Grand Daughter | — | Alabama |
| 78 | John H. Heerman | 77 | Head | Farmer | Alabama |
| 79 | Beatrice Thrasher | 39 | Head | — | Alabama |
| 80 | Gladys Thrasher | 16 | Daughter | — | Alabama |
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)