JH
John Henderson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Polk, Iowa
Our Model Tree links this John Henderson across the 1920, 1930 and 1940 US Censuses in Polk, Iowa (XGBoost, ~Confirmed), with identified parents Robert & R — first a son (b.~1911), then head of a 5-person household.
Age 19
b. ~1911
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Iowa |
| Surname | Henderson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Reporter |
| Industry | Newspaper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Reporter |
| Township / Ward | Des Moines City |
| 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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Jane Henderson | Daughter | — | 15 | ~1915 |
| Maryann Henderson | Daughter | — | 22 | ~1908 |
| Robert Henderson | Head | — | 56 | ~1874 |
| John Henderson | Son | — | 19 | ~1911 |
| Myrtle Henderson | Spouse | — | 50 | ~1880 |
Census Appearances
1920
Polk, Iowa
Son, age 9
Polk, Iowa · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 19
Polk, Iowa · implied b. ~1911 — 5 household members
| Surname | Henderson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Reporter |
| Industry | Newspaper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Other, age 30
Polk-County, Iowa · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | Johnnie |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Cook |
| Industry | Cafe |
| Class of Worker | OA |
| Hours Worked | 72 |
| Highest Grade | 8 |
| 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 John Henderson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Henderson (~0.92 confidence) and father R Henderson (~0.92 confidence) and mother Myrtle Henderson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Henderson
b. ~1874
Source father
● Household
· direct · ~0.92
Father
R Henderson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Myrtle Henderson
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Henderson
Son · 1930 · age 19 · b. ~1911 · Iowa
★ You are viewing this record
Sibling
Maryann Henderson
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Henderson
Sibling · 1930 · age 15
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 — Polk, Iowa
Open full size
1930 US Federal Census — Polk, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel673:0983)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Simon Butler | 48 | Head | Supt. | Iowa |
| 2 | Sara H. Butler | 45 | Wife | Organist | Iowa |
| 3 | Elizabeth C. Hamilton | 80 | Mother-in-law | — | Indiana |
| 4 | Charles Hansen | 53 | Head | Druggist | Iowa |
| 5 | Erma B. Hansen | 52 | Wife | — | Iowa |
| 6 | Esther L. Hansen | 19 | Daughter | Stenographer | Iowa |
| 7 | Ole M. Hansen | 84 | Father | Shoemaker | Norway |
| 8 | Roberta Jones | 22 | Niece | Cashier | North Dakota |
| 9 | August H. Carstens | 45 | Head | Steamfitter | Nebraska |
| 10 | Hazel A. Carstens | 35 | Wife | — | Iowa |
| 11 | August M. Carstens | 14 | Son | — | Nebraska |
| 12 | Mary E. Carstens | 12 | Daughter | — | Nebraska |
| 13 | Taylor S. Miller | 48 | Head | Proprietor | Iowa |
| 14 | Grace M. Miller | 35 | Wife | Saleslady | Iowa |
| 15 | Henry D. Hanes | 50 | Head | Salesman | Iowa |
| 16 | Mattie E. Hanes | 44 | Wife | — | Iowa |
| 17 | Ralph C. Hanes | 12 | Son | — | Iowa |
| 18 | Mary S. Hanes | 11 | Daughter | — | Iowa |
| 19 | Jonathan C. Hanes | 85 | Father | Farmer | Indiana |
| 20 | Sven A. Lindholm | 77 | Head | Publicity Serv. | Sweden |
| 21 | Alfreda A. Lindholm | 72 | Wife | — | Sweden |
| 22 | Edith O. Lindholm | 42 | Daughter | Teacher | Nebraska |
| 23 | Hattie A. Lindholm | 27 | Son | Salesman | Minnesota |
| 24 | Olga A. Marlow | 45 | Daughter | Manager | Minnesota |
| 25 | Fredy M. Marlow | 22 | Granddaughter | Nurse | Minnesota |
| 26 | William R. Casson | 58 | Head | Proprietor | Illinois |
| 27 | Matilda Casson | 53 | Wife | — | Iowa |
| 28 | Lancelot C. Rood | 60 | Head | Manager | Iowa |
| 29 | Maud A. Rood | 54 | Wife | — | Iowa |
| 30 | Adelaide I. Mcvey | 34 | Daughter | Buyer | Illinois |
| 31 | Robert M. Mcvey | 12 | Grandson | — | Iowa |
| 32 | Ruth L. Shepard | 41 | Head | Landlady | Illinois |
| 33 | William P. Shepard | 14 | Son | — | Illinois |
| 34 | Adele L. Shepard | 12 | Daughter | — | Illinois |
| 35 | Elizabeth Horne | 30 | Lodger | Teacher | Nebraska |
| 36 | William B. Chase | 53 | Head | Physician | Iowa |
| 37 | Ethel P. Chase | 51 | Wife | — | Iowa |
| 38 | William B. Jr. Chase | 23 | Son | — | Iowa |
| 39 | Robert L. Chase | 19 | Son | — | Iowa |
| 40 | Robert Henderson | 56 | Head | Superintendent | Iowa |
| 41 | Myrtle L. Henderson | 50 | Wife | — | Iowa |
| 42 | Maryann Henderson | 22 | Daughter | Stenographer | Iowa |
| 43 | John Henderson THIS PERSON | 19 | Son | Reporter | Iowa |
| 44 | Jane Henderson | 15 | Daughter | — | Iowa |
| 45 | John Sloan | 53 | Head | Proprietor | Texas |
| 46 | Mary F. Sloan | 58 | Wife | — | Missouri |
| 47 | Adele J. Sloan | 24 | Daughter | File Clerk | Missouri |
| 48 | Grace J. Sloan | 21 | Daughter | — | Missouri |
| 49 | Ollie H. Harris | 46 | Head | Salesman | Iowa |
| 50 | Etta M. Harris | 40 | Wife | — | Iowa |
Pedigree Summary
John + 2 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)