JL
John Lund — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this John Lund across the 1920, 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 3-person household.
Age 55
b. ~1885
Male
Head
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Lund |
| Given Name | John P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Oto Twp |
| 1935 Residence (County) | Woodbury |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 452 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Farmer |
| Township / Ward | Oto Twp |
| Est. Birth Year | ~1885 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Lund | Head | — | 55 | ~1885 |
| Lester Lund | Son | — | 16 | ~1924 |
| Rosa Lund | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Woodbury, Iowa
Head, age 32
Woodbury, Iowa · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lund |
| Given Name | John M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1906 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Carpenter |
| Industry | House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1930
Woodbury, Iowa
Head, age 44
Woodbury, Iowa · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lund |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 26 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Laborer |
| Industry | Mason Work |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | O |
| Home Value / Rent | 3500 |
| Radio Set | R |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Woodbury-County, Iowa
Head, age 55
Woodbury-County, Iowa · implied b. ~1885 — 3 household members
| Surname | Lund |
| Given Name | John P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Oto Twp |
| 1935 Residence (County) | Woodbury |
| Naturalization Status | Naturalized |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 452 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
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 Lund across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Lund
Head · 1940 · age 55 · b. ~1885 · 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 — Woodbury-County, Iowa
Open full size
1940 US Federal Census — Woodbury-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01214-00440)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Earl L Guinn | 24 | Head | Farmer | Nebraska |
| 2 | Theresa Guinn | 57 | Mother | Housekeeper | Germany |
| 3 | Francis Guinn | 22 | Brother | Farm Laborer | Iowa |
| 4 | Nadine Guinn | 17 | Sister | Housekeeper | Iowa |
| 5 | Deloris Guinn | 14 | Sister | Housekeeper | Iowa |
| 6 | Ariel A White | 26 | Head | Farm Laborer | Iowa |
| 7 | Muriel V White | 26 | Wife | Housekeeper | Iowa |
| 8 | Alice L White | 1 | Daughter | — | Iowa |
| 9 | John P Lund THIS PERSON | 55 | Head | Farmer | Denmark |
| 10 | Rosa T Lund | 53 | Wife | Farm Helper | Missouri |
| 11 | Lester R Lund | 16 | Son | Chores On Farm | Iowa |
| 12 | Marius Anderson | 48 | Head | Farmer | Denmark |
| 13 | Anna B Anderson | 42 | Wife | Farm Helper | Iowa |
| 14 | Willie H Anderson | 17 | Son | Helper On Farm | Iowa |
| 15 | Mark J Anderson | 11 | Son | — | Iowa |
| 16 | Carston Thompson | 19 | Hired hand | Farm Laborer | Iowa |
| 17 | Martin Drenkhahn | 47 | Head | Farmer | Iowa |
| 18 | Frances A Drenkhahn | 43 | Wife | Farm Helper | Iowa |
| 19 | Clifford C Drenkhahn | 15 | Son | Chores On Farm | Iowa |
| 20 | Donald A Drenkhahn | 12 | Son | — | Iowa |
| 21 | Dorris F Drenkhahn | 10 | Daughter | — | Iowa |
| 22 | Marvin L Drenkhahn | 2 | Son | — | Iowa |
| 23 | Lewis F Cooper | 30 | Head | Farmer | Iowa |
| 24 | Martin J Sawin | 36 | Head | Farmer | Iowa |
| 25 | Ollie E Sawin | 39 | Wife | Farm Helper | Iowa |
| 26 | Darlene M Sawin | 19 | Daughter | Maid | Iowa |
| 27 | Bonnie L Sawin | 16 | Daughter | Helper In Home | Iowa |
| 28 | Dorothy J Sawin | 11 | Daughter | — | Iowa |
| 29 | Martin J Sawin | 8 | Son | — | Iowa |
| 30 | Oren C Sawin | 4 | Son | — | Iowa |
| 31 | Charles T Morgan | 49 | Head | Farmer | Iowa |
| 32 | Mary K Morgan | 45 | Wife | Farm Helper | Iowa |
| 33 | Leonard C Morgan | 23 | Son | Farm Laborer | Iowa |
| 34 | Mildred E Morgan | 20 | Daughter | School Teacher | Iowa |
| 35 | Dorothy J Morgan | 15 | Daughter | — | Iowa |
| 36 | Ronald P Morgan | 8 | Son | — | Iowa |
| 37 | Ernest H Weathers | 44 | Head | Farmer | Iowa |
| 38 | Edna N Weathers | 40 | Wife | Farm Helper | Iowa |
| 39 | Margaret L Weathers | 21 | Daughter | Clerk | Iowa |
| 40 | Earnestine L Weathers | 17 | Daughter | Helper In Home Work | 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)