JH
John Hendrickson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Iron-County, Michigan
Our Model Tree links this John Hendrickson across the 1920, 1930 and 1940 US Censuses in Iron-County, Michigan (XGBoost, ~Confirmed), with identified parents Ruben & Sanna — first a head (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Iron-County, Michigan |
| Surname | Hendrickson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Crystal Falls Township |
| 1935 Residence (County) | Iron |
| Additional Details | |
| Occupation | Trucker |
| Industry | W.P.A. Road Construction |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 450 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Trucker |
| Township / Ward | Crystal Falls Township |
| Est. Birth Year | ~1906 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Elaine Hendrickson | Daughter | — | 11 | ~1929 |
| John Hendrickson | Head | — | 34 | ~1906 |
| Dolores Hendrickson | Daughter | — | 7 | ~1933 |
| Richard Hendrickson | Son | — | 9 | ~1931 |
| Lillian Hendrickson | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Iron, Michigan
Son, age 14
Iron, Michigan · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hendrickson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Iron, Michigan
Other, age 24
Iron, Michigan · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hendrickson |
| Given Name | John |
| Relationship to Head | Son-in-law |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 22 |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Woodsman |
| Industry | Lumber |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Iron-County, Michigan
Head, age 34
Iron-County, Michigan · implied b. ~1906 — 5 household members
| Surname | Hendrickson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Crystal Falls Township |
| 1935 Residence (County) | Iron |
| Occupation | Trucker |
| Industry | W.P.A. Road Construction |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 450 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Hendrickson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ruben Hendrickson (~0.92 confidence) and mother Sanna Hendrickson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ruben Hendrickson
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Sanna Hendrickson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Hendrickson
Head · 1940 · age 34 · b. ~1906 · Michigan
★ 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 — Iron-County, Michigan
Open full size
1940 US Federal Census — Iron-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01765-00392)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Laurence Giordana | 33 | Head | Laborer | Italy |
| 2 | Angeline Giordana | 27 | Wife | — | Michigan |
| 3 | Edward Giordana | 8 | Son | — | Michigan |
| 4 | Florence Giordana | 6 | Daughter | — | Michigan |
| 5 | Elizabeth Ann Giordana | 3 | Daughter | — | Michigan |
| 6 | Laurence Jr. Giordana | 1 | Son | — | Michigan |
| 7 | Reuben V. Wicklund | 28 | Head | Farmer | Michigan |
| 8 | Mary Carlson | 54 | Mother | — | Finland |
| 9 | Walter Carlson | 19 | Step Brother | Laborer | Michigan |
| 10 | Anthony Pantala | 34 | Head | Farmer | Idaho |
| 11 | John Hendrickson THIS PERSON | 34 | Head | Trucker | Michigan |
| 12 | Lillian Hendrickson | 28 | Wife | — | Michigan |
| 13 | Elaine Hendrickson | 11 | Daughter | — | Michigan |
| 14 | Richard Hendrickson | 9 | Son | — | Michigan |
| 15 | Dolores Hendrickson | 7 | Daughter | — | Michigan |
| 16 | Edward Claus | 70 | Head | — | Germany |
| 17 | Mary Claus | 54 | Wife | — | Germany |
| 18 | Donald Claus | 27 | Son | Laborer | Michigan |
| 19 | Emma L. Claus | 25 | Daughter | Chore Girl | Michigan |
| 20 | David W. Claus | 22 | Son | Ditching Laborer | Michigan |
| 21 | Rena V. Claus | 25 | Daughter-in-law | — | Michigan |
| 22 | Donna Marie Claus | 1 | Daughter | — | Michigan |
| 23 | John Huhtaman | 56 | Head | Farmer | Finland |
| 24 | Louise Laurent | 52 | Head | Farmer | Italy |
| 25 | John Laurent | 27 | Son | Track Helper | Michigan |
| 26 | Martin Thompson | 57 | Head | Farmer | Finland |
| 27 | Hilma Thompson | 57 | Wife | — | Finland |
| 28 | Andrew Kampilla | 52 | Head | Lumberjack | Finland |
| 29 | Fred White | 63 | Head | — | Michigan |
| 30 | Paul Challancin | 32 | Head | Sloper | Michigan |
| 31 | Rose Challancin | 30 | Wife | — | Michigan |
| 32 | Edward Wreniere | 76 | Head | Trapper | Canada-French |
| 33 | John Wierikko | 65 | Head | Farmer | Finland |
| 34 | Armas W. Wierikko | 24 | Son | Laborer | Michigan |
| 35 | Rena L. Wierikko | 26 | Daughter | — | Michigan |
| 36 | Urho V. Wierikko | 23 | Son | Trucker | Michigan |
| 37 | Agnes I. Wierikko | 21 | Daughter | Housekeeper | Michigan |
| 38 | Reino Wierikko | 18 | Son | Pruning Trees | Michigan |
| 39 | Matt Wallny | 45 | Head | Swamper | Finland |
| 40 | Hilda V. Wallny | 13 | Daughter | — | Michigan |
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)