JL
John Lunn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kossuth-County, Iowa
Our Model Tree links this John Lunn across the 1930 and 1940 US Censuses in Kossuth-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kossuth-County, Iowa |
| Surname | Lunn |
| Given Name | John A. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Harrison Township |
| 1935 Residence (County) | Kossuth |
| Additional Details | |
| Occupation | Farming |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farming |
| Township / Ward | Harrison Township |
| Est. Birth Year | ~1910 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Lunn | Head | — | 30 | ~1910 |
| Beverley Lunn | Daughter | — | 8 | ~1932 |
| Richard Lunn | Son | — | 7 | ~1933 |
| Elsa Lunn | Spouse | — | 28 | ~1912 |
Census Appearances
1930
Kossuth, Iowa
Head, age 20
Kossuth, Iowa · implied b. ~1910 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lunn |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 19 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Kossuth-County, Iowa
Head, age 30
Kossuth-County, Iowa · implied b. ~1910 — 4 household members
| Surname | Lunn |
| Given Name | John A. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Harrison Township |
| 1935 Residence (County) | Kossuth |
| Occupation | Farming |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Lunn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Lunn
Head · 1940 · age 30 · b. ~1910 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Kossuth-County, Iowa
Open full size
1940 US Federal Census — Kossuth-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01173-00417)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herman S. Botter | 64 | head | Farming | Germany |
| 2 | Mary Botter | 55 | wife | — | Germany |
| 3 | Malinda Botter | 24 | daughter | — | Iowa |
| 4 | Ella Botter | 22 | daughter | — | Iowa |
| 5 | Albert Botter | 22 | son | Labor | Iowa |
| 6 | Rida Worthington | 25 | daughter | — | Minnesota |
| 7 | Engelbert Logemann | 39 | head | Farming | Iowa |
| 8 | Helen Logemann | 28 | wife | — | Iowa |
| 9 | Norma Logemann | 10 | daughter | — | Iowa |
| 10 | Wallace Logemann | 7 | son | — | Iowa |
| 11 | Donald Logemann | 5 | son | — | Iowa |
| 12 | Vernon Burt | 43 | head | Farming | Minnesota |
| 13 | Violet Burt | 30 | wife | — | Iowa |
| 14 | Vernon Jr. Burt | 3 | son | — | Iowa |
| 15 | Wilma Burt | 2 | daughter | — | Iowa |
| 16 | Ronald Burt | 0 | son | — | Iowa |
| 17 | Oliver V. Koons | 42 | head | Labor | Iowa |
| 18 | Lottie Koons | 40 | wife | — | Iowa |
| 19 | Lois Koons | 18 | daughter | — | Iowa |
| 20 | James Koons | 16 | son | — | Iowa |
| 21 | Donald Koons | 9 | son | — | Iowa |
| 22 | Dorothy Koons | 8 | daughter | — | Iowa |
| 23 | Victoriano Huerta | 29 | head | Laborer | Mexico |
| 24 | Kenneth Welfore | 27 | head | Farming | Iowa |
| 25 | Merle Welfore | 22 | brother | Labor | South Dakota |
| 26 | Maxine Welfore | 14 | sister | — | South Dakota |
| 27 | Grace Welfore | 52 | mother | — | South Dakota |
| 28 | Godfrey Lindrum | 39 | head | Farming | Illinois |
| 29 | Lillian Lindrum | 38 | wife | — | Iowa |
| 30 | Paul Lindrum | 12 | son | — | Iowa |
| 31 | Sharon Lindrum | 4 | daughter | — | Iowa |
| 32 | Alfred Busch | 31 | head | Farming | Iowa |
| 33 | Susanna Busch | 29 | wife | — | Indiana |
| 34 | Maxine Busch | 3 | daughter | — | Iowa |
| 35 | Darlene Busch | 1 | daughter | — | Iowa |
| 36 | Duane Busch | 0 | son | — | Iowa |
| 37 | John A. Lunn THIS PERSON | 30 | head | Farming | Iowa |
| 38 | Elsa M. Lunn | 28 | wife | — | Iowa |
| 39 | Beverley A. Lunn | 8 | daughter | — | Iowa |
| 40 | Richard Lunn | 7 | son | — | Iowa |
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)