KJ
Katherine Johnson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Nottoway, Virginia
Our Model Tree links this Katherine Johnson across the 1930 and 1940 US Censuses in Nottoway, Virginia (XGBoost, ~Confirmed) — first a daughter (b.~1911), then head of a 8-person household.
Age 19
b. ~1911
Female
Daughter
Born: Virginia
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Nottoway, Virginia |
| Surname | Johnson |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Blackstone Town |
| Est. Birth Year | ~1911 |
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 1930 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| W Johnson | Son | — | 11 | ~1919 |
| Nellie Johnson | Daughter | — | 13 | ~1917 |
| Virginia Johnson | Daughter | — | 18 | ~1912 |
| Wallace Johnson | Son | — | 8 | ~1922 |
| Katherine Johnson | Daughter | — | 19 | ~1911 |
| W Johnson | Head | — | 52 | ~1878 |
| Lucille Johnson | Daughter | — | 15 | ~1915 |
| Mary Johnson | Spouse | — | 43 | ~1887 |
Census Appearances
1930
Nottoway, Virginia
Daughter, age 19
Nottoway, Virginia · implied b. ~1911 — 8 household members
| Surname | Johnson |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Nottoway-County, Virginia
Daughter, age 29
Nottoway-County, Virginia · implied b. ~1911 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Katie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Widowed |
| Birthplace | Virginia |
| 1935 Residence (City) | Winningham |
| 1935 Residence (County) | Nottoway |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Katherine Johnson
Daughter · 1930 · age 19 · b. ~1911 · Virginia
★ You are viewing this record
Sibling
W Johnson
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Johnson
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Johnson
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Johnson
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wallace Johnson
Sibling · 1930 · age 8
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
1930 US Federal Census — Nottoway, Virginia
Open full size
1930 US Federal Census — Nottoway, Virginia
Page Contents
48 people indexed on this census page (ia:1930:15thcensus2453unit:0536)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Burnell Williams | 15 | Son | — | Virginia |
| 2 | Theo Williams | 14 | Daughter | — | Virginia |
| 3 | Laura Williams | 12 | Daughter | — | Virginia |
| 4 | Lucille Williams | 5 | Granddaughter | — | Virginia |
| 5 | Cornelius Ward | 38 | Head | Painter | Virginia |
| 6 | Mary A Ward | 35 | Wife | Teacher | Virginia |
| 7 | Ruth Ward | 15 | Daughter | — | Virginia |
| 8 | C M East | 26 | Head | Barber | Virginia |
| 9 | Jessie A East | 25 | Wife | — | Virginia |
| 10 | Gladys Talman | 17 | Sister in law | — | Virginia |
| 11 | A W Hardy | 50 | Head | Salesman | Virginia |
| 12 | Annie T Hardy | 45 | Wife | — | Virginia |
| 13 | Mabel Hardy | 16 | Daughter | — | Virginia |
| 14 | Walter Hardy | 12 | Son | — | Virginia |
| 15 | Gladys Hammond | 22 | Boarder | Salesman | Virginia |
| 16 | W L Johnson | 52 | Head | Salesman | Virginia |
| 17 | Mary Johnson | 43 | Wife | Salesman | Virginia |
| 18 | Katherine Johnson THIS PERSON | 19 | Daughter | — | Virginia |
| 19 | Virginia Lee Johnson | 18 | Daughter | Asst House | Virginia |
| 20 | Lucille Johnson | 15 | Daughter | — | Virginia |
| 21 | Nellie Johnson | 13 | Daughter | — | Virginia |
| 22 | W L Jr Johnson | 11 | Son | — | Virginia |
| 23 | Wallace Johnson | 8 | Son | — | Virginia |
| 24 | W A Johnson | 31 | Head | Salesman | Virginia |
| 25 | Lola Johnson | 25 | Wife | — | Virginia |
| 26 | B W Coleman | 33 | Head | Mechanic | Virginia |
| 27 | Irene Coleman | 30 | Wife | — | Virginia |
| 28 | Milton Coleman | 10 | Son | — | Virginia |
| 29 | Jane Coleman | 19 | Sister | — | Virginia |
| 30 | Elizabeth Gilliam | 70 | Boarder | — | Virginia |
| 31 | Luther Young | 31 | Head | Salesman | Virginia |
| 32 | Reatice Young | 28 | Wife | Machine | Virginia |
| 33 | Luther Jr Young | 10 | Son | — | Virginia |
| 34 | Andrew J Young | 8 | Son | — | Virginia |
| 35 | Harriet Epes | 19 | Boarder | Helper | Virginia |
| 36 | J W Meredith | 23 | Boarder | Clerk | Virginia |
| 37 | W B Ward Allen | 37 | Head | Salesman | Virginia |
| 38 | Margaret Allen | 36 | Wife | Office Manager | Virginia |
| 39 | W Ward Jr Allen | 5 | Son | — | Virginia |
| 40 | Mary E Perkins | 16 | Stepdaughter | — | Virginia |
| 41 | Stanley Sullivan | 47 | Boarder | Agent | Virginia |
| 42 | Lucie Sadler | 29 | Boarder | Clerk | Virginia |
| 43 | C J Simms | 29 | Boarder | Clerk | Virginia |
| 44 | J A Patterson | 28 | Boarder | Mechanic | Virginia |
| 45 | Hugh Coleman | 21 | Boarder | Salesman | Virginia |
| 46 | J A Guerry | 22 | Boarder | Salesman | Virginia |
| 47 | W S Shaper | 26 | Head | Helper | Virginia |
| 48 | Carrie Shaper | 22 | Wife | Helper | Virginia |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)