JK
John Kern — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Minnesota
Our Model Tree links this John Kern across the 1930 and 1940 US Censuses in Washington-County, Minnesota (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Minnesota |
| Surname | Kern |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Cottage Grove Township |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | Laborer |
| Industry | Packing House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Laborer |
| Township / Ward | Cottage Grove Township |
| Est. Birth Year | ~1921 |
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 |
|---|---|---|---|---|
| Lawrence Dorsey | Other | — | 69 | ~1871 |
| Ruth Kern | Daughter | — | 13 | ~1927 |
| Emily Kern | Daughter | — | 16 | ~1924 |
| Eloise Kern | Daughter | — | 6 | ~1934 |
| Isabel Kern | Daughter | — | 9 | ~1931 |
| James Kern | Son | — | 15 | ~1925 |
| Harry Kern | Head | — | 46 | ~1894 |
| Louise Kern | Spouse | — | 44 | ~1896 |
| John Kern | Son | — | 19 | ~1921 |
Census Appearances
1930
Hennepin, Minnesota
Son, age 9
Hennepin, Minnesota · implied b. ~1921 — 14 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kern |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Washington-County, Minnesota
Son, age 19
Washington-County, Minnesota · implied b. ~1921 — 9 household members
| Surname | Kern |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Cottage Grove Township |
| 1935 Residence (County) | Washington |
| Occupation | Laborer |
| Industry | Packing House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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.
Show:
This person
Anchor record
John Kern
Son · 1940 · age 19 · b. ~1921 · Minnesota
★ You are viewing this record
Sibling
Eloise Kern
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emily Kern
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabel Kern
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Kern
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Kern
Sibling · 1940 · age 13
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 — Washington-County, Minnesota
Open full size
1940 US Federal Census — Washington-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01967-00146)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Muriel Boyd | 30 | Wife | H | Minnesota |
| 42 | Ivia Boyd | 6 | Daughter | — | Minnesota |
| 43 | William Boyd | 4 | Son | — | Minnesota |
| 44 | Roy G. Shingeldecker | 33 | Head | Truck Driver | Minnesota |
| 45 | Bernice M. Shingeldecker | 27 | Wife | H | Minnesota |
| 46 | Jean Shingeldecker | 6 | Daughter | — | Minnesota |
| 47 | Gayle Shingeldecker | 2 | Daughter | — | Minnesota |
| 48 | Richard O. Kohls | 40 | Head | Caretaker | Minnesota |
| 49 | Gertrude Kohls | 44 | Wife | Parlor Maid | Minnesota |
| 50 | Shirley Mae Kohls | 13 | Daughter | — | Minnesota |
| 51 | Richard A. Nippoldt | 61 | Head | Farmer | Minnesota |
| 52 | Anna Nippoldt | 54 | Wife | H | Minnesota |
| 53 | Frances Nippoldt | 23 | Daughter | House Work | Minnesota |
| 54 | Victor Nippoldt | 20 | Son | Laborer | Minnesota |
| 55 | John L. Peterson | 52 | Head | Farmer | Sweden |
| 56 | Ella C. Peterson | 49 | Wife | H | Sweden |
| 57 | John F. Peterson | 22 | Son | Laborer | Minnesota |
| 58 | Everett H. Peterson | 19 | Son | Laborer | Minnesota |
| 59 | Albert H. Bake | 77 | Head | Farmer | Minnesota |
| 60 | Jessie B. Bake | 68 | Wife | H | Minnesota |
| 61 | Raymond A. Bake | 43 | Son | Manager | Minnesota |
| 62 | Fred White | 57 | Hired Hand | Farm Laborer | ? |
| 63 | Harry Harold C. Kern | 46 | Head | Farmer | Minnesota |
| 64 | Louise F. Kern | 44 | Wife | H | Minnesota |
| 65 | John F. Kern THIS PERSON | 19 | Son | Laborer | Minnesota |
| 66 | Emily E. Kern | 16 | Daughter | — | Minnesota |
| 67 | James H. Kern | 15 | Son | S | Minnesota |
| 68 | Ruth L. Kern | 13 | Daughter | — | Minnesota |
| 69 | Isabel F. Kern | 9 | Daughter | — | Minnesota |
| 70 | Eloise J. Kern | 6 | Daughter | — | Minnesota |
| 71 | Lawrence Dorsey | 69 | Hired Hand | Farm Laborer | Illinois |
| 72 | John Nippoldt | 38 | Head | Farmer | Minnesota |
| 73 | Adelaide Nippoldt | 30 | Wife | H | Minnesota |
| 74 | Emily Mung | 80 | Head | U | Minnesota |
| 75 | Margie Stafford | 39 | Daughter | H | North Dakota |
| 76 | Mavis Stafford | 15 | Granddaughter | S | North Dakota |
| 77 | James Stafford | 13 | Grandson | — | North Dakota |
| 78 | Joyce Stafford | 12 | Granddaughter | — | North Dakota |
| 79 | Leroy O. Walter | 39 | Head | Farmer | Minnesota |
| 80 | Hilda Walter | 37 | Wife | H | Minnesota |
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)