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Robert Hudson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clinton-County, Iowa
Our Model Tree links this Robert Hudson across the 1920, 1930 and 1940 US Censuses in Clinton-County, Iowa (XGBoost, ~Confirmed), with identified parents Thomas & Kenneth — first a son (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Iowa |
| Surname | Hudson |
| Given Name | Robert L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Low Moor Town |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Occupation | Laborer |
| Industry | garage |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 240 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Low Moor Town |
| Est. Birth Year | ~1919 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Kenneth Hudson | Head | — | 57 | ~1883 |
| Ralph Hudson | Son | — | 25 | ~1915 |
| Robert Hudson | Son | — | 21 | ~1919 |
Census Appearances
1920
Clinton, Iowa
Son, age 2
Clinton, Iowa · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hudson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Clinton, Iowa
Son, age 12
Clinton, Iowa · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hudson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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
Clinton-County, Iowa
Son, age 21
Clinton-County, Iowa · implied b. ~1919 — 3 household members
| Surname | Hudson |
| Given Name | Robert L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Low Moor Town |
| 1935 Residence (County) | Clinton |
| Occupation | Laborer |
| Industry | garage |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 240 |
| Highest Grade | H 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 Robert Hudson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Hudson (~0.92 confidence) and father Kenneth Hudson (~0.92 confidence) and mother Hattie Hudson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Hudson
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Kenneth Hudson
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Hattie Hudson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Hudson
Son · 1940 · age 21 · b. ~1919 · Iowa
★ You are viewing this record
Sibling
Ralph Hudson
Sibling · 1940 · age 25
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 — Clinton-County, Iowa
Open full size
1940 US Federal Census — Clinton-County, Iowa
Page Contents
12 people indexed on this census page (nara:1940:m-t0627-01151-00114)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louis B Daldrup|Daldrupp | 11 | Son | — | Iowa |
| 2 | Lawrence A Daldrup|Daldrupp | 8 | Son | — | Iowa |
| 3 | Paul C Daldrup|Daldrupp | 7 | Son | — | Iowa |
| 4 | Darrell D Daldrup|Daldrupp | 4 | Son | — | Iowa |
| 5 | Janet D Daldrup|Daldrupp | 1 | Daughter | — | Iowa |
| 6 | John A Johnson | 55 | Head | Laborer | Sweden |
| 7 | Louis J Johnson | 50 | Son | Laborer | Iowa |
| 8 | Kenneth Hudson | 57 | Head | — | Iowa |
| 9 | Ralph L Hudson | 25 | Son | Truck Driver | Iowa |
| 10 | Robert L Hudson THIS PERSON | 21 | Son | Laborer | Iowa |
| 11 | Finley Roman | 63 | Head | Carpenter | Iowa |
| 12 | Louie E O Roman | 68 | Wife | — | Iowa |
Pedigree Summary
Robert + 1 sibling
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 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)