JH
James Henderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this James Henderson across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed), with identified parents Grace & Margaret — first a son (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Henderson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Occupation | Smoked Meat Department |
| Industry | Meat Packing |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 496 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Smoked Meat Department |
| Township / Ward | Waterloo City |
| Est. Birth Year | ~1916 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Joseph Henderson | Head | — | 58 | ~1882 |
| Grace Heisler | Other | — | 22 | ~1918 |
| James Henderson | Son | — | 24 | ~1916 |
| Margaret Henderson | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Black Hawk, …
Son, age 3
Black Hawk, Iowa · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | James D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Black Hawk, …
Son, age 14
Black Hawk, Iowa · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | James D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Black-Hawk-County, Iowa
Son, age 24
Black-Hawk-County, Iowa · implied b. ~1916 — 4 household members
| Surname | Henderson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Occupation | Smoked Meat Department |
| Industry | Meat Packing |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 496 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 James Henderson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Grace Henderson (~0.92 confidence) and mother Margaret Henderson (~0.92 confidence) and mother Margaret Henderson (~0.92 confidence) and father Joseph Henderson (~0.92 confidence) and father Joseph Henderson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Grace Henderson
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Margaret Henderson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Margaret Henderson
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Joseph Henderson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Joseph Henderson
b. ~1882
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Henderson
Son · 1940 · age 24 · b. ~1916 · Iowa
★ 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 — Black-Hawk-County, Iowa
Open full size
1940 US Federal Census — Black-Hawk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01139-01266)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Howard Bowerstock | 52 | Head | Owner And Manager | Ohio |
| 42 | Ann Bowerstock | 44 | Wife | — | West Virginia |
| 43 | Marian Galloway | 47 | Maid | Household Duties | Iowa |
| 44 | Ralph W. Hosmer | 51 | Head | District Agent | Iowa |
| 45 | Johanna Hosmer | 44 | Wife | — | Iowa |
| 46 | Parker W. Finley | 37 | Head | Service Operator | Iowa |
| 47 | Madeline Finley | 29 | Wife | — | Iowa |
| 48 | Diane Finley | 6 | Daughter | — | Iowa |
| 49 | Edna Anderson | 19 | Maid | Household Duties | Iowa |
| 50 | Arnold John Raper | 31 | Head | Owner-Manager | Iowa |
| 51 | Florence L. Raper | 31 | Wife | — | Missouri |
| 52 | Robert Louis Raper | 4 | Son | — | Iowa |
| 53 | Helen Hockett | 26 | Maid | Household Duties | Minnesota |
| 54 | Gertrude Black Hockett | None | Maid | — | — |
| 55 | Karl C. Von Lackum | 40 | Head | State Editor | Iowa |
| 56 | Elizabeth Von Lackum | 41 | Wife | — | Michigan |
| 57 | Nancy Jean Von Lackum | 13 | Daughter | — | Iowa |
| 58 | Genevieve Von Lackum | 44 | Sister | Stenographer | Illinois |
| 59 | Leslie C. Lundeen | 40 | Head | Stationary Engineer | Illinois |
| 60 | Bernetta Lundeen | 40 | Wife | — | Iowa |
| 61 | David Lundeen | 12 | Son | — | Iowa |
| 62 | Jarral Lundeen | 6 | Daughter | — | Iowa |
| 63 | Harry Kauffman | 42 | Head | Repair Dept. Sheet Metal | Iowa |
| 64 | Grace Kauffman | 40 | Wife | — | Iowa |
| 65 | Mary Lou Kauffman | 10 | Daughter | — | Iowa |
| 66 | Craig Kauffman | 7 | Son | — | Iowa |
| 67 | Albert E. Enderlein | 61 | Head | Owner And Manager | Kansas |
| 68 | Luella Enderlein | 51 | Wife | — | Kansas |
| 69 | Eugene A. Enderlein | 21 | Son | — | Iowa |
| 70 | Earl H. Turner | 69 | Head | Owner And Manager | Wisconsin |
| 71 | Emma D. Turner | 72 | Wife | — | Wisconsin |
| 72 | Evaline Cranston | 24 | Maid | Household Duties | Iowa |
| 73 | Joseph Henderson | 58 | Head | District Secretary And Treasurer | Iowa |
| 74 | Margaret Grace Henderson | 60 | Wife | — | Iowa |
| 75 | James Henderson THIS PERSON | 24 | Son | Smoked Meat Department | Iowa |
| 76 | Grace Heisler | 22 | Maid | Household Duties | Iowa |
| 77 | Max G. Bevell | 31 | Head | Farm Loan Supervisor | Iowa |
| 78 | Harriet Bevell | 32 | Wife | — | Iowa |
| 79 | Barbara Ann Bevell | 11 | Daughter | — | Oklahoma |
| 80 | David J. Bevell | 9 | Son | — | Iowa |
Pedigree Summary
James
Gen 1 · 5 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)