JJ
John Johnston — 1940 US Census Record
Model Tree available1940 United States Federal Census · Leavenworth-County, Kansas
Our Model Tree links this John Johnston across the 1920, 1930 and 1940 US Censuses in Leavenworth-County, Kansas (XGBoost, ~Confirmed), with identified parents William & Catherine — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Leavenworth-County, Kansas |
| Surname | Johnston |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Leavenworth City |
| 1935 Residence (County) | Leavenworth |
| Additional Details | |
| Occupation | Advertising |
| Industry | Advertising |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 1537 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Advertising |
| Township / Ward | Leavenworth City |
| Est. Birth Year | ~1909 |
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 Johnston | Head | — | 31 | ~1909 |
| John Johnston | Son | — | 7 | ~1933 |
| Mae Johnston | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Leavenworth, Kansas
Son, age 11
Leavenworth, Kansas · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | John Hairl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Leavenworth, Kansas
Son, age 21
Leavenworth, Kansas · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | John H |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | signalman |
| Industry | railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | no |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Leavenworth-County, Kansas
Head, age 31
Leavenworth-County, Kansas · implied b. ~1909 — 3 household members
| Surname | Johnston |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Leavenworth City |
| 1935 Residence (County) | Leavenworth |
| Occupation | Advertising |
| Industry | Advertising |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 1537 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Johnston across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Johnston (~0.92 confidence) and mother Catherine Johnston (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Johnston
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Catherine Johnston
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Johnston
Head · 1940 · age 31 · b. ~1909 · Kansas
★ 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 — Leavenworth-County, Kansas
Open full size
1940 US Federal Census — Leavenworth-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01240-01008)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sherman Barbara A. Grant | 5 | Daughter | — | Kansas |
| 2 | Meyer R. Henshaw | 43 | Head | Foreman | Iowa |
| 3 | Marjorie Henshaw | 39 | Wife | — | Iowa |
| 4 | Raymond Henshaw | 19 | Son | Clerk Paper Carrier | Iowa |
| 5 | John Henshaw | 17 | Son | Paper Carrier | Iowa |
| 6 | Christine Henshaw | 15 | Daughter | — | Iowa |
| 7 | Russell Henshaw | 13 | Son | — | Iowa |
| 8 | Robert Henshaw | 11 | Son | — | Iowa |
| 9 | Marian Henshaw | 5 | Daughter | — | Kansas |
| 10 | Kathryn Henshaw | 3 | Daughter | — | Kansas |
| 11 | James Henshaw | 1 | Son | — | Kansas |
| 12 | William Cordt | 60 | Head | — | Germany |
| 13 | Louise Cordt | 58 | Wife | — | Missouri |
| 14 | William Jr. Cordt | 22 | Son | Moulder | Kansas |
| 15 | Charles Cordt | 20 | Son | Labor Construction Co. | Kansas |
| 16 | Louise Jr. Cordt | 18 | Daughter | New Worker N. Y. A. | Kansas |
| 17 | Christine Cordt | 13 | Daughter | — | Kansas |
| 18 | Bertha Cordt | 11 | Daughter | — | Kansas |
| 19 | Richard Cordt | 9 | Son | — | Kansas |
| 20 | Walter Cordt | 7 | Son | — | Kansas |
| 21 | Jack E. North | 32 | Head | Flour Packer | Kansas |
| 22 | Ruby North | 27 | Wife | — | Kansas |
| 23 | John Johnston THIS PERSON | 31 | Head | Advertising | Kansas |
| 24 | Mae Johnston | 28 | Wife | — | Kansas |
| 25 | John Iii Johnston | 7 | Son | — | Kansas |
| 26 | Frank Mckinney | 25 | Head | Reporter Photographer | Missouri |
| 27 | Katherine Mckinney | 27 | Wife | Beauty Operator | Kansas |
| 28 | Clyde Roakey | 54 | Head | Blacksmith | Nebraska |
| 29 | Laura Roakey | 48 | Wife | — | Kansas |
| 30 | Mary E. Roakey | 24 | Daughter | Clerk | Kansas |
| 31 | Charlotte Roakey | 20 | Daughter | Beauty Operator | Kansas |
| 32 | Clyde Jr. Roakey | 14 | Son | — | Kansas |
| 33 | Lena Meyer | 55 | Head | Waitress | Kansas |
| 34 | Anna Meyer | 55 | Mother | — | Kansas |
| 35 | Carl William Meyer | 33 | Sister | Painter | Kansas |
| 36 | Clarence Chapman | 33 | Nephew | Labor | Kansas |
| 37 | John Mills | 67 | Head | Labor | Kansas |
| 38 | Anna Mills | 66 | Wife | Laundress | Kansas |
| 39 | Alonzo Mills | 40 | Son | Woodwork | Kansas |
| 40 | Harold C. Short | 31 | Head | Clerk | Kansas |
Related Census Records
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)