JC
John Corbett — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dubuque-County, Iowa
Our Model Tree links this John Corbett across the 1930 and 1940 US Censuses in Dubuque-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 9-person household.
Age 22
b. ~1918
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dubuque-County, Iowa |
| Surname | Corbett |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (County) | Dubuque |
| Additional Details | |
| Occupation | Bottler |
| Industry | Bottling works |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 496 |
| Highest Grade | Hs 4 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Bottler |
| Township / Ward | Dubuque |
| Est. Birth Year | ~1918 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Corbett | Head | — | 55 | ~1885 |
| Jane Corbett | Daughter | — | 15 | ~1925 |
| Stella Corbett | Daughter | — | 20 | ~1920 |
| Martha Corbett | Daughter | — | 18 | ~1922 |
| Clotilda Corbett | Spouse | — | 54 | ~1886 |
| Molly Burke | Other | — | 71 | ~1869 |
| Paul Corbett | Son | — | 26 | ~1914 |
| Marcella Corbett | Daughter | — | 24 | ~1916 |
| John Corbett | Son | — | 22 | ~1918 |
Census Appearances
1930
Dubuque, Iowa
Son, age 12
Dubuque, Iowa · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Corbett |
| Given Name | John |
| 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
Dubuque-County, Iowa
Son, age 22
Dubuque-County, Iowa · implied b. ~1918 — 9 household members
| Surname | Corbett |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (County) | Dubuque |
| Occupation | Bottler |
| Industry | Bottling works |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 496 |
| Highest Grade | Hs 4 |
| 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 Corbett across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Corbett
Son · 1940 · age 22 · b. ~1918 · Iowa
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Sibling
Marcella Corbett
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Corbett
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stella Corbett
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Corbett
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Corbett
Sibling · 1940 · age 18
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 — Dubuque-County, Iowa
Open full size
1940 US Federal Census — Dubuque-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01159-00408)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin, Lawrence Martin | 2 | Daughter | — | Iowa |
| 2 | Lawrence Dales | 37 | Head | Janitor | Minnesota |
| 3 | Anna Dales | 41 | Wife | — | Michigan |
| 4 | Leroy Dales | 12 | Son | — | Michigan |
| 5 | Gladys Dales | 7 | Daughter | — | Michigan |
| 6 | Arnold Jennings | 36 | Head | Cooker Furnace | Iowa |
| 7 | Florence Jennings | 31 | Wife | — | Illinois |
| 8 | Clementine Jennings | 12 | Daughter | — | Iowa |
| 9 | Erwin R. Berger | 31 | Head | Battery Factory | Nebraska |
| 10 | Margaret Berger | 31 | Wife | Trimmer | Iowa |
| 11 | Erwin Jr. Berger | 9 | Son | — | Iowa |
| 12 | Lenore Berger | 7 | Daughter | — | Iowa |
| 13 | Kathlyn Berger | 6 | Daughter | — | Iowa |
| 14 | Delores Berger | 4 | Daughter | — | Iowa |
| 15 | Robert Berger | 3 | Son | — | Iowa |
| 16 | Joseph Walker | 27 | Head | Laborer | Iowa |
| 17 | Mildred Walker | 23 | Wife | — | Iowa |
| 18 | Robert Walker | 3 | Son | — | Iowa |
| 19 | Wayne Walker | 1 | Son | — | Iowa |
| 20 | Elizabeth Walker | 0 | Daughter | — | Iowa |
| 21 | Martin J. Burke | 49 | Head | Laborer | Iowa |
| 22 | Mary Burke | 53 | Sister | — | Iowa |
| 23 | Ralph Smith | 36 | Head | Trucker | Iowa |
| 24 | Alta Smith | 49 | Wife | — | Iowa |
| 25 | Shirley Smith | 10 | Daughter | — | Iowa |
| 26 | Goldwin Varner | 29 | Step-daughter | Seamstress | Iowa |
| 27 | Mary Ann Varner | 10 | Step-granddaughter | — | Iowa |
| 28 | Richard Varner | 7 | Step-grandson | — | Illinois |
| 29 | Mary Jordan | 86 | Head | — | Ohio |
| 30 | Anna Jordan | 65 | Daughter | — | Illinois |
| 31 | Lester Daily | 45 | Son | Wood Carver | Illinois |
| 32 | John P. Corbett | 55 | Head | Packer | Iowa |
| 33 | Clotilda Corbett | 54 | Wife | — | Iowa |
| 34 | Paul Corbett | 26 | Son | Shipping Clerk | Iowa |
| 35 | Marcella Corbett | 24 | Daughter | Secretary | Iowa |
| 36 | John Corbett THIS PERSON | 22 | Son | Bottler | Iowa |
| 37 | Stella Corbett | 20 | Daughter | — | Iowa |
| 38 | Martha Corbett | 18 | Daughter | — | Iowa |
| 39 | Jane Corbett | 15 | Daughter | — | Iowa |
| 40 | Molly Burke | 71 | Sister-in-law | — | Tennessee |
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)