JH
John Henderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cass-County, Iowa
Our Model Tree links this John Henderson across the 1920, 1930 and 1940 US Censuses in Cass-County, Iowa (XGBoost, ~Confirmed), with identified parents J & Lida — first a son (b.~1915), then head of a 7-person household.
Age 25
b. ~1915
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Iowa |
| Surname | Henderson |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Atlantic City |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Industry | S |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Atlantic City |
| Est. Birth Year | ~1915 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Henderson | Head | — | 55 | ~1885 |
| Ethel Henderson | Other | — | 50 | ~1890 |
| Mary Anderson | Other | — | 30 | ~1910 |
| Robert Henderson | Son | — | 17 | ~1923 |
| Edwin Henderson | Son | — | 27 | ~1913 |
| John Henderson | Son | — | 25 | ~1915 |
| Leola Henderson | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Cass, Iowa
Son, age 5
Cass, Iowa · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cass, Iowa
Son, age 15
Cass, Iowa · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | John C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cass-County, Iowa
Son, age 25
Cass-County, Iowa · implied b. ~1915 — 7 household members
| Surname | Henderson |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Atlantic City |
| 1935 Residence (County) | Cass |
| Industry | S |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 J Henderson (~0.92 confidence) and mother Lida Henderson (~0.92 confidence) and father John Henderson (~0.92 confidence) and mother Leola Henderson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
J Henderson
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Lida Henderson
b. ~1866
Source mother
● Household
· direct · ~0.92
Father
John Henderson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Leola Henderson
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Henderson
Son · 1940 · age 25 · b. ~1915 · Iowa
★ You are viewing this record
Sibling
Edwin Henderson
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Henderson
Sibling · 1940 · age 17
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
1940 US Federal Census — Cass-County, Iowa
Open full size
1940 US Federal Census — Cass-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01145-00133)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Kilpatrick | 68 | Lodger | — | Wisconsin |
| 2 | Ruth Johnson | 18 | Lodger | Waitress | Iowa |
| 3 | Jeanette Carr | 23 | Lodger | Stenographer | Iowa |
| 4 | George M. Eblen | 25 | Head | Motor Analyst Technician | Iowa |
| 5 | Edna F. Eblen | 25 | Wife | — | Nebraska |
| 6 | Richard L. Eblen | 2 | Son | — | Iowa |
| 7 | Lelia J. Sands | 85 | Head | — | Vermont |
| 8 | Ethel S. Stevens | 60 | Daughter | — | Illinois |
| 9 | Walter C. Archambault | 60 | Head | Insurance Agent | New York |
| 10 | Flora E. Archambault | 57 | Wife | — | Vermont |
| 11 | Gideon M. Chaffey | 64 | Head | — | Iowa |
| 12 | Leone S. Chaffey | 57 | Wife | — | Illinois |
| 13 | Iva M. Chaffey | 14 | Daughter | — | Iowa |
| 14 | Clarence C. Morrison | 65 | Head | — | Kentucky |
| 15 | Minnie S. Morrison | 62 | Wife | — | Iowa |
| 16 | Donivan Ingram | 19 | Lodger | Kitchen Boy | Nebraska |
| 17 | John Z. Henderson | 55 | Head | Owner Operator | Iowa |
| 18 | Leola E. Henderson | 54 | Wife | — | Iowa |
| 19 | Edwin C. Henderson | 27 | Son | Feed Man | Iowa |
| 20 | John C. Henderson THIS PERSON | 25 | Son | — | Iowa |
| 21 | Robert M. Henderson | 17 | Son | — | Iowa |
| 22 | Ethel E. Henderson | 50 | Sister | Saleslady | Iowa |
| 23 | Mary H. Anderson | 30 | Lodger | Teacher | Iowa |
| 24 | Annie O'Donnell | 67 | Head | — | Illinois |
| 25 | Chas. B. Castle | 37 | Lodger | Superintendent | Iowa |
| 26 | Edna B. Castle | 34 | Lodger | — | Iowa |
| 27 | Lecha B. Wymore | 14 | Lodger | — | Iowa |
| 28 | Nadine B. Castle | 14 | Lodger | — | Iowa |
| 29 | Lois A. Wymore | 12 | Lodger | — | Iowa |
| 30 | Walter H. O'Donnell | 54 | Head | — | Illinois |
| 31 | Maude F. O'Donnell | 50 | Wife | — | Iowa |
| 32 | Helen E. O'Donnell | 18 | Daughter | — | Iowa |
| 33 | Bernadine Comes | 71 | Head | — | Germany |
| 34 | David R. Love | 85 | Head | — | Pennsylvania |
| 35 | Rosa B. Love | 80 | Wife | — | Iowa |
| 36 | Ed J. Bopp | 48 | Head | Laborer | Iowa |
| 37 | Matilda E. Bopp | 45 | Wife | — | Iowa |
| 38 | Edward L. Bopp | 19 | Son | Delivery Man | Iowa |
| 39 | Gregory W. Bopp | 40 | Brother | Farm Laborer | Iowa |
| 40 | Daniel R. Peasley | 21 | Lodger | Field Man | Iowa |
Pedigree Summary
John + 2 siblings
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)