JH
John Henderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Henderson across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Walter & Walter — first a son (b.~1907), then head of a 2-person household.
Age 33
b. ~1907
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Henderson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | East McKeesport Boro |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Salesman |
| Industry | Retail Men's Clothing |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Salesman |
| Township / Ward | East Mckeesport Boro |
| Est. Birth Year | ~1907 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| William Henderson | Head | — | 59 | ~1881 |
| John Henderson | Son | — | 33 | ~1907 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 12
Allegheny, Pennsylvania · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 23
Allegheny, Pennsylvania · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Salesman |
| Industry | Retail Goods |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 33
Allegheny-County, Pennsylvania · implied b. ~1907 — 2 household members
| Surname | Henderson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | East McKeesport Boro |
| 1935 Residence (County) | Allegheny |
| Occupation | Salesman |
| Industry | Retail Men's Clothing |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Henderson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Walter Henderson (~0.92 confidence) and father Walter Henderson (~0.92 confidence) and father William Henderson (~0.92 confidence) and mother Vallie Henderson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Walter Henderson
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Walter Henderson
b. ~1880
Source father
● Household
· direct · ~0.92
Father
William Henderson
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Vallie Henderson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Henderson
Son · 1940 · age 33 · b. ~1907 · Pennsylvania
★ 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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03402-00693)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Filomeno Cardo | 52 | Head | Stone Grinder | Italy |
| 2 | Angeline Cardo | 37 | Wife | — | Italy |
| 3 | Josephine Cardo | 11 | Daughter | — | Pennsylvania |
| 4 | Teresa Cardo | 10 | Daughter | — | Pennsylvania |
| 5 | Rosie Cardo | 9 | Daughter | — | Pennsylvania |
| 6 | Johnny Cardo | 2 | Son | — | Pennsylvania |
| 7 | Robert Walker | 58 | Head | Tool Grinder | Scotland |
| 8 | Ollie Walker | 61 | Wife | — | Pennsylvania |
| 9 | Robert Jr. Walker | 29 | Son | Drill Press Operator | Pennsylvania |
| 10 | Doris Walker | 28 | Daughter | — | Pennsylvania |
| 11 | Elinor Walker | 24 | Daughter | Sales Clerk | Pennsylvania |
| 12 | Lillian Walker | 22 | Daughter | Sales Clerk | Pennsylvania |
| 13 | Adam Rudolph | 58 | Head | Carpenter | Austria |
| 14 | Mary Rudolph | 53 | Wife | — | Pennsylvania |
| 15 | Eleanor Connor | 13 | Niece | — | Pennsylvania |
| 16 | William Brown | 75 | Head | — | Pennsylvania |
| 17 | Annie M. Brown | 75 | Wife | — | Pennsylvania |
| 18 | Mabel Brown | 50 | Daughter | — | Pennsylvania |
| 19 | Jesse H. Fischer | 71 | Brother in law | — | Pennsylvania |
| 20 | Geo. W. Miller | 76 | Head | — | Ohio |
| 21 | Elizabeth Miller | 75 | Wife | — | Pennsylvania |
| 22 | Edward M. Miller | 55 | Son | Police Man | Pennsylvania |
| 23 | Clifford J. Miller | 45 | Son | Police Man | Pennsylvania |
| 24 | Elizabeth Miller | 24 | Granddaughter | Rubber Inspector | Pennsylvania |
| 25 | Lloyd Kaufman | 27 | Head | Pipe Fitter | Pennsylvania |
| 26 | Doris Kaufman | 27 | Wife | — | Pennsylvania |
| 27 | Lloyd Kaufman | 5 | Son | — | Pennsylvania |
| 28 | Robert Garvin | 27 | Head | Machine Hand | Pennsylvania |
| 29 | Genevieve Garvin | 27 | Wife | — | Pennsylvania |
| 30 | William Henderson | 59 | Head | — | Pennsylvania |
| 31 | John Henderson THIS PERSON | 33 | Son | Salesman | Pennsylvania |
| 32 | William D. Curry | 22 | Head | Teacher | Pennsylvania |
| 33 | Lorine Curry | 21 | Wife | — | Pennsylvania |
| 34 | Charles W. Wilson | 61 | Head | Druggist | West Virginia |
| 35 | Adda Wilson | 60 | Wife | — | Pennsylvania |
| 36 | David L. Rev. Lay | 49 | Head | Minister | Pennsylvania |
| 37 | Martha D. Lay | 46 | Wife | — | Pennsylvania |
| 38 | Samuel Lay | 20 | Son | Waiter | Pennsylvania |
| 39 | Cynthianne Lay | 17 | Daughter | — | Pennsylvania |
| 40 | Anita Lay | 4 | Daughter | — | Pennsylvania |
Pedigree Summary
John
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)