JH
John Harrison — 1940 US Census Record
Model Tree available1940 United States Federal Census · Davidson-County, Tennessee
Our Model Tree links this John Harrison across the 1920, 1930 and 1940 US Censuses in Davidson-County, Tennessee (XGBoost, ~Confirmed), with identified parents S & Julia — first a head (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Head
Born: Tennessee
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Davidson-County, Tennessee |
| Surname | Harrison |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | Nashville |
| 1935 Residence (County) | Davidson |
| Additional Details | |
| Occupation | Switchman |
| Industry | Rail Road |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1462 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | Switchman |
| Township / Ward | Nashville |
| Est. Birth Year | ~1908 |
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 Harrison | Head | — | 32 | ~1908 |
| John Harrison | Son | — | 9 | ~1931 |
| Dorothy Harrison | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Davidson, Tennessee
Son, age 10
Davidson, Tennessee · implied b. ~1910 — 31 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1930
Davidson, Tennessee
Son, age 21
Davidson, Tennessee · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Davidson-County, Tennessee
Head, age 32
Davidson-County, Tennessee · implied b. ~1908 — 3 household members
| Surname | Harrison |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | Nashville |
| 1935 Residence (County) | Davidson |
| Occupation | Switchman |
| Industry | Rail Road |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1462 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 Harrison across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father S Harrison (~0.92 confidence) and mother Julia Harrison (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
S Harrison
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Julia Harrison
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Harrison
Head · 1940 · age 32 · b. ~1908 · Tennessee
★ 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 — Davidson-County, Tennessee
Open full size
1940 US Federal Census — Davidson-County, Tennessee
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03975-00658)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Cowan | 71 | Mother | — | Tennessee |
| 2 | Cecil G. Cook | 35 | Head | Bread Salesman | Tennessee |
| 3 | Shirley Ann Cook | 5 | Daughter | — | Tennessee |
| 4 | Earl T. Cook | 4 | Son | — | Tennessee |
| 5 | Mary Cook | 25 | Wife | — | Kentucky |
| 6 | B. E. Kellow | 55 | Head | Decorating | Tennessee |
| 7 | John C. Harris | 43 | Head | Retail Salesman | Tennessee |
| 8 | Irene Harris | 40 | Wife | — | Tennessee |
| 9 | Dorothy S. Harris | 16 | Daughter | — | Tennessee |
| 10 | Martha J. Harris | 13 | Daughter | — | Tennessee |
| 12 | John F. Reavis | 45 | Head | Car Inspector | Tennessee |
| 13 | Valace M. Reavis | 37 | Wife | — | Tennessee |
| 14 | Mary E. Reavis | 17 | Daughter | — | Tennessee |
| 15 | John D. Reavis | 16 | Son | — | Tennessee |
| 16 | Clara F. Reavis | 13 | Daughter | — | Tennessee |
| 17 | Robert D. Whitaker | 72 | Head | Car Inspector | Tennessee |
| 18 | Mary P. Whitaker | 66 | Wife | — | Tennessee |
| 19 | George O. Griffin | 36 | Head | Carpenter | Tennessee |
| 20 | Nell D. Griffin | 35 | Wife | — | Tennessee |
| 21 | George W. Griffin | 14 | Son | — | Tennessee |
| 22 | Robert H. Griffin | 8 | Son | — | Tennessee |
| 23 | Richard C. Griffin | 1 | Son | — | Tennessee |
| 24 | Marcus A. Karl | 39 | Head | Service Mgr. | Tennessee |
| 25 | Willie Mae Karl | 36 | Wife | Cashier | Tennessee |
| 26 | Betsy N. Karl | 12 | Daughter | — | Tennessee |
| 27 | Bettie Mae Mallory | 62 | Mother-in-law | — | Tennessee |
| 28 | John S. Harrison THIS PERSON | 32 | Head | Switchman | Tennessee |
| 29 | Dorothy P. Harrison | 31 | Wife | — | Tennessee |
| 30 | John M. Harrison | 9 | Son | — | Tennessee |
| 31 | A. J. Mrs. Turner | 58 | Head | — | Tennessee |
| 32 | Antoinette Turner | 27 | Daughter | Sec. & Treas. | Tennessee |
| 33 | Foster Turner | 29 | Son | Attendant | Tennessee |
| 34 | Peggy Turner | 24 | Daughter | Trained Nurse | Tennessee |
| 35 | Leon Smith | 42 | Servant | Servant | Tennessee |
| 36 | Helsey E. Hailey | 27 | Head | Health Dept. | Tennessee |
| 37 | Jewell O. Hailey | 24 | Wife | — | Tennessee |
| 38 | Alice W. Hailey | 4 | Son | — | Tennessee |
| 39 | Douglas Jordan | 35 | Head | — | Tennessee |
| 40 | Douglas Shelton | 28 | Step-daughter | Stenographer | Tennessee |
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)