KJ
Katherine Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Davidson-County, Tennessee
Our Model Tree links this Katherine Johnson across the 1920, 1930 and 1940 US Censuses in Davidson-County, Tennessee (XGBoost, ~Confirmed), with identified parents William & William — first a daughter (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Female
Daughter
Born: Tennessee
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Davidson-County, Tennessee |
| Surname | Johnson |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Nashville City |
| 1935 Residence (County) | Davidson |
| Additional Details | |
| Occupation | Team Captain |
| Industry | Insurance Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | Team Captain |
| Township / Ward | Nashville City |
| Est. Birth Year | ~1914 |
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 Katherine | Age | Birth yr |
|---|---|---|---|---|
| Katherine Johnson | Daughter | — | 26 | ~1914 |
| Florence Little | Other | — | 50 | ~1890 |
| Brown Johnson | Head | — | 52 | ~1888 |
Census Appearances
1920
Davidson, Tennessee
Daughter, age 6
Davidson, Tennessee · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Katharine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | New York |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1930
Davidson, Tennessee
Daughter, age 16
Davidson, Tennessee · implied b. ~1914 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Davidson-County, Tennessee
Daughter, age 26
Davidson-County, Tennessee · implied b. ~1914 — 3 household members
| Surname | Johnson |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Nashville City |
| 1935 Residence (County) | Davidson |
| Occupation | Team Captain |
| Industry | Insurance Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| 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 Katherine Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Johnson (~0.92 confidence) and father William Johnson (~0.92 confidence) and mother Kate Johnson (~0.92 confidence) and father Brown Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Johnson
b. ~1876
Source father
● Household
· direct · ~0.92
Father
William Johnson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Kate Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Brown Johnson
b. ~1888
Source father
● Household
· direct · ~0.92
This person
Anchor record
Katherine Johnson
Daughter · 1940 · age 26 · b. ~1914 · 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
40 people indexed on this census page (nara:1940:m-t0627-03976-00393)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Porter L. Goodrum | 44 | Head | Salesman | Kentucky |
| 2 | Laura E. Goodrum | 40 | Wife | — | Kentucky |
| 3 | Charles Goodrum | 19 | Son | Salesman | Kentucky |
| 4 | Elizabeth Goodrum | 15 | Daughter | — | Kentucky |
| 5 | Harold Goodrum | 7 | Son | — | Tennessee |
| 6 | William Stirling | 50 | Head | Tailor | Scotland |
| 7 | Margaret R. Stirling | 56 | Wife | — | Scotland |
| 8 | Margaret Stirling | 20 | Daughter | Stenographer | Tennessee |
| 9 | Marian Clark | 76 | Lodger | — | Scotland |
| 10 | Mamie Rhea | 49 | Head | Secretary | Tennessee |
| 11 | Leila Harris | 47 | Sister | Clerical | Tennessee |
| 12 | Clarke Harris | 19 | Nephew | New Worker | Tennessee |
| 13 | Laurence S. Post | 45 | Head | Salesman | Connecticut |
| 14 | Pauline F. Post | 46 | Wife | — | Tennessee |
| 15 | Joe Fisher | 55 | Brother-in-law | Salesman | Tennessee |
| 16 | Angelo Anderson | 53 | Head | Owner | Greece |
| 17 | Crissie Anderson | 42 | Wife | — | Greece |
| 18 | Bessie Anderson | 22 | Daughter | — | Tennessee |
| 19 | Irene Anderson | 18 | Daughter | — | Tennessee |
| 20 | Robert W. Cryer | 50 | Head | Railway Clerk | Tennessee |
| 21 | Alvie M. Cryer | 43 | Wife | Supervisor | Tennessee |
| 22 | Sarah Foster | 65 | Mother-in-law | — | Tennessee |
| 23 | Margaret Pinson | 52 | Head | Office Work | Kentucky |
| 24 | William Pinson | 21 | Son | Office Work | Mississippi |
| 25 | Jean Pinson | 16 | Daughter | — | Tennessee |
| 26 | Peggy Pinson | 15 | Daughter | — | Tennessee |
| 27 | Patricia Pinson | 12 | Daughter | — | Tennessee |
| 28 | Lula Hendricks | 71 | Sister | — | Tennessee |
| 29 | James Marshall | 45 | Lodger | Salesman | Tennessee |
| 30 | Walter E. Brightwell | 46 | Head | Editor | Texas |
| 31 | Agnes Brightwell | 46 | Wife | — | Tennessee |
| 32 | Walter E. Brightwell | 20 | Son | New Worker | Texas |
| 33 | Roland Brightwell | 15 | Son | — | Texas |
| 34 | John B. Petty | 26 | Head | Printer | Tennessee |
| 35 | Edna Petty | 21 | Wife | Inspector | Tennessee |
| 36 | Brown A. Johnson | 52 | Head | Insurance Agent | Tennessee |
| 37 | Katherine Johnson THIS PERSON | 26 | Daughter | Team Captain | Tennessee |
| 38 | Florence Little | 50 | Sister | — | Tennessee |
| 39 | Walter Stirling | 45 | Head | Auditor | Scotland |
| 40 | Gladys Stirling | 43 | Wife | Correspondent Clerk | Tennessee |
Pedigree Summary
Katherine
Gen 1 · 4 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)