JK
John Kern — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this John Kern across the 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 6-person household.
Age 48
b. ~1892
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | Kern |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs |
| 1935 Residence (County) | Pottawattamie |
| Additional Details | |
| Occupation | Barber Shop |
| Industry | at home |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 700 |
| Highest Grade | No 5 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Barber Shop |
| Township / Ward | Council Bluffs |
| Est. Birth Year | ~1892 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Charline Kern | Daughter | — | 11 | ~1929 |
| Jackene Kern | Daughter | — | 9 | ~1931 |
| Lila Kern | Spouse | — | 45 | ~1895 |
| John Kern | Son | — | 6 | ~1934 |
| Robert Kern | Son | — | 22 | ~1918 |
| John Kern | Head | — | 48 | ~1892 |
Census Appearances
1930
Pottawattamie, Iowa
Head, age 38
Pottawattamie, Iowa · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kern |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 32 |
| Father's Birthplace | Germany |
| Mother's Birthplace | New York |
| Occupation | Barber |
| Industry | Barber Shop |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3700 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Head, age 48
Pottawattamie-County, Iowa · implied b. ~1892 — 6 household members
| Surname | Kern |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs |
| 1935 Residence (County) | Pottawattamie |
| Occupation | Barber Shop |
| Industry | at home |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 700 |
| Highest Grade | No 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 Kern across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Kern
Head · 1940 · age 48 · b. ~1892 · 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 — Pottawattamie-County, Iowa
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1940 US Federal Census — Pottawattamie-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01199-00383)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lorraine Barwick | 17 | daughter | — | Iowa |
| 2 | Melda Jackson | 73 | Mother | — | Iowa |
| 3 | Ronald Anderson | 29 | Head | Painter Of | Iowa |
| 4 | Mayona Anderson | 24 | Wife | — | Iowa |
| 5 | Robert Anderson | 3 | Son | — | Iowa |
| 6 | Alvin Kern | 84 | Head | — | Pennsylvania |
| 7 | Martha Kern | 84 | Wife | — | Iowa |
| 8 | John Kern THIS PERSON | 48 | Head | Barber Shop | Iowa |
| 9 | Lila Kern | 45 | Wife | Grocery Store | Iowa |
| 10 | Robert Kern | 22 | Son | Labor | Iowa |
| 11 | Charline Kern | 11 | daughter | — | Iowa |
| 12 | Jackene Kern | 9 | daughter | — | Iowa |
| 13 | John Raymond Kern | 6 | Son | — | Iowa |
| 15 | Frank Krapee | 66 | Head | — | New York |
| 16 | Ruth Leck | 34 | daughter | Sewing Project | Iowa |
| 17 | William Christenson | 35 | Head | Mechanic Servicing | Iowa |
| 18 | Maxwell Christenson | 27 | Wife | — | No. Dakota |
| 19 | Ruth Christenson | 7 | Son | — | Nebraska |
| 20 | Elizabeth Christenson | 4 | daughter | — | Iowa |
| 21 | John Eledge | 63 | Head | Operator | Iowa |
| 22 | Myrtle Eledge | 46 | Wife | — | Nebraska |
| 23 | Grover Eledge | 19 | Son | — | Iowa |
| 24 | Wrestle Eledge | 18 | Son | — | Iowa |
| 25 | Melba Eledge | 16 | daughter | — | Iowa |
| 26 | John Sylvester | 63 | Head | Coach Cleaner | Illinois |
| 27 | Lillian Sylvester | 45 | Wife | — | Oklahoma |
| 28 | Dewy Smith | 42 | Head | — | Missouri |
| 29 | Murrel Smith | 42 | Wife | — | Kansas |
| 30 | Dewie Smith | 19 | Son | Labor | Iowa |
| 31 | Geneve Smith | 18 | daughter | — | Iowa |
| 32 | Clifford Smith | 16 | Son | — | Iowa |
| 33 | Bruce Durbin | 56 | Head | Labor | Kentucky |
| 34 | Ellen Durbin | 45 | Wife | — | Wyoming |
| 35 | Glenn Durbin | 20 | Son | Labor | Iowa |
| 36 | Ruth Durbin | 18 | daughter | — | Iowa |
| 37 | Betty Durbin | 16 | daughter | — | Iowa |
| 38 | Earl Durbin | 14 | Son | — | Iowa |
| 39 | Walter Durbin | 12 | Son | — | Iowa |
| 40 | Donna May Durbin | 10 | daughter | — | 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)