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 son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kossuth-County, Iowa |
| Surname | Lunn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Harrison Twp. |
| 1935 Residence (County) | Kossuth |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Harrison Twp |
| Est. Birth Year | ~1928 |
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 |
|---|---|---|---|---|
| James Lunn | Son | — | 3 | ~1937 |
| Harold Lunn | Son | — | 9 | ~1931 |
| Annie Lunn | Spouse | — | 36 | ~1904 |
| Carl Lunn | Head | — | 38 | ~1902 |
| Sharon Lunn | Daughter | — | 2 | ~1938 |
| Shirley Lunn | Daughter | — | 4 | ~1936 |
| Lucille Lunn | Daughter | — | 16 | ~1924 |
| John Lunn | Son | — | 12 | ~1928 |
| Franklin Lunn | Son | — | 7 | ~1933 |
Census Appearances
1930
Kossuth, Iowa
Other, age 2
Kossuth, Iowa · implied b. ~1928 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lunn |
| Given Name | John A. |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Texas |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Kossuth-County, Iowa
Son, age 12
Kossuth-County, Iowa · implied b. ~1928 — 9 household members
| Surname | Lunn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Harrison Twp. |
| 1935 Residence (County) | Kossuth |
| Highest Grade | 5 |
| 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.
Show:
This person
Anchor record
John Lunn
Son · 1940 · age 12 · b. ~1928 · Iowa
★ You are viewing this record
Sibling
James Lunn
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Lunn
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Lunn
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Franklin Lunn
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sharon Lunn
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Lunn
Sibling · 1940 · age 4
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 — 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-t0627-01173-00423)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Raymond Boeckholt | 15 | Son | — | Iowa |
| 2 | Elmer H. Hollasch | 37 | Head | Farming | Iowa |
| 3 | Mary J. Hollasch | 38 | Wife | Home | Iowa |
| 4 | Delores Hollasch | 14 | Daughter | — | Iowa |
| 5 | Helen Hollasch | 12 | Daughter | — | Iowa |
| 6 | Wilma Hollasch | 10 | Daughter | — | Iowa |
| 7 | Shirley Hollasch | 8 | Daughter | — | Iowa |
| 8 | James Hollasch | 6 | Son | — | Iowa |
| 9 | Phillip Hollasch | 4 | Son | — | Iowa |
| 10 | Axel Paulsen | 50 | Head | Farming | Denmark |
| 11 | Augusta Paulsen | 40 | Wife | Home | Missouri |
| 12 | Albert H. Paulsen | 15 | Son | — | Iowa |
| 13 | Mildred E. Paulsen | 13 | Daughter | — | Iowa |
| 14 | David E. Hosier | 51 | Head | Farming | Iowa |
| 15 | Cora M. Hosier | 50 | Wife | Home | Iowa |
| 16 | Howard W. Hosier | 29 | Son | Labor | Iowa |
| 17 | Florence Hosier | 26 | Daughter-in-law | Home | South Dakota |
| 18 | John James Hosier | 4 | Grandson | — | Iowa |
| 19 | Marilyn Hosier | 3 | Granddaughter | — | Iowa |
| 20 | Richard Hosier | 2 | Son | — | Iowa |
| 21 | Carl Lunn | 38 | Head | Farming | Iowa |
| 22 | Annie E. Lunn | 36 | Wife | Home | Texas |
| 23 | Lucille Lunn | 16 | Daughter | — | Iowa |
| 24 | John Lunn THIS PERSON | 12 | Son | — | Iowa |
| 25 | Harold Lunn | 9 | Son | — | Iowa |
| 26 | Franklin Lunn | 7 | Son | — | Iowa |
| 27 | Shirley A. Lunn | 4 | Daughter | — | Iowa |
| 28 | James Lunn | 3 | Son | — | Iowa |
| 29 | Sharon Lunn | 2 | Daughter | — | Iowa |
| 30 | Jacob E. Kelly | 72 | Head | Farming | Iowa |
| 31 | Agnes C. Kelly | 70 | Wife | Home | Iowa |
| 32 | Everett J. Kelley | 31 | Head | Farming | Iowa |
| 33 | Bertha M. Kelley | 28 | Wife | Home | Iowa |
| 34 | Everett Jr. Kelley | 8 | Son | — | Iowa |
| 35 | William B. Kelley | 4 | Son | — | Iowa |
| 36 | Robert S. Kelley | 1 | Son | — | Iowa |
| 37 | William S. Welfare | 35 | Head | Farming | Minnesota |
| 38 | Rosella Welfare | 27 | Wife | Home | Iowa |
| 39 | David J. Welfare | 2 | Son | — | Minnesota |
| 40 | George A. Mogensen | 56 | Head | Farming | Denmark |
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)