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Mary Lund — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Eau-Claire-County, Wisconsin
Our Model Tree links this Mary Lund across the 1930 and 1940 US Censuses in Eau-Claire-County, Wisconsin (XGBoost, ~Confirmed) — first a spouse (b.~1892), then head of a 8-person household.
Age 48
b. ~1892
Female
Spouse
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Eau-Claire-County, Wisconsin |
| Surname | Lund |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Town |
| 1935 Residence (County) | Eau Claire |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Town |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Annie Lund | Daughter | — | 16 | ~1924 |
| Carl Lund | Son | — | 10 | ~1930 |
| Mary Lund | Spouse | — | 48 | ~1892 |
| Ida Lund | Daughter | — | 15 | ~1925 |
| Iela Lund | Daughter | — | 9 | ~1931 |
| Charles Lund | Head | — | 49 | ~1891 |
| Emil Lund | Son | — | 12 | ~1928 |
| Laura Lund | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Eau Claire, …
Spouse, age 37
Eau Claire, Wisconsin · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lund |
| Given Name | Mary E |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Age at First Marriage | 20 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Eau-Claire-County, Wisconsin
Spouse, age 48
Eau-Claire-County, Wisconsin · implied b. ~1892 — 8 household members
| Surname | Lund |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Town |
| 1935 Residence (County) | Eau Claire |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Mary Lund across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lund
Spouse · 1940 · age 48 · b. ~1892 · Wisconsin
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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 — Eau-Claire-County, Wisconsin
Open full size
1940 US Federal Census — Eau-Claire-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04477-00171)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arvilla Deetz | 24 | Wife | Housewife | Wisconsin |
| 42 | Ronald Deetz | 1 | Son | — | Wisconsin |
| 43 | Frank H. Jacobson | 56 | Head | Farmer | Wisconsin |
| 44 | Elma Jacobson | 50 | Wife | — | Wisconsin |
| 45 | Norman J. Jacobson | 21 | Son | — | Wisconsin |
| 46 | Lorraine Jacobson | 16 | Daughter | — | Wisconsin |
| 47 | Arnold Berg | 5 | Hired hand | Farm Hand | Wisconsin |
| 48 | Gilbert Dahl | 56 | Head | Farmer | Wisconsin |
| 49 | Robert Dahl | 65 | Brother | — | Norway |
| 50 | Oscar Olson | 35 | Nephew | Farmer | North Dakota |
| 51 | Rena Olson | 62 | Sister | — | Norway |
| 52 | Fred Flasher | 67 | Brother-in-law | Farm Hand | Wisconsin |
| 53 | Tena Flasher | 59 | Sister | — | Wisconsin |
| 54 | Nephew Marshall | None | M | Service Sta. | — |
| 55 | Gordon Marshall | 15 | Nephew | — | Minnesota |
| 56 | Wilfred Davis | 39 | Head | Farmer | Wisconsin |
| 57 | Gwendolyn Davis | 37 | Wife | — | Wisconsin |
| 58 | Betty Davis | 13 | Daughter | — | Wisconsin |
| 59 | Bernard Davis | 10 | Son | — | Wisconsin |
| 60 | Virgil Davis | 9 | Son | — | Wisconsin |
| 61 | Donna Davis | 6 | Daughter | — | Wisconsin |
| 62 | Eldon Davis | 4 | Son | — | Wisconsin |
| 63 | Hugh Smith | 47 | Head | Patrolman | Wisconsin |
| 64 | Esther Smith | 42 | Wife | — | Wisconsin |
| 65 | Gladys Smith | 18 | Daughter | — | Wisconsin |
| 66 | Benjamin Berg | 32 | Hired hand | Farm Hand | Wisconsin |
| 67 | John M. Johnson | 57 | Head | Caretaker | Minnesota |
| 68 | Rena Johnson | 57 | Wife | — | Minnesota |
| 69 | Melvin Johnson | 26 | Son | Farm Hand | Montana |
| 70 | Charles Lund | 49 | Head | Farmer | Wisconsin |
| 71 | Mary Lund THIS PERSON | 48 | Wife | — | Wisconsin |
| 72 | Annie Lund | 16 | Daughter | — | Wisconsin |
| 73 | Ida Lund | 15 | Daughter | — | Wisconsin |
| 74 | Emil Lund | 12 | Son | — | Wisconsin |
| 75 | Carl Lund | 10 | Son | — | Wisconsin |
| 76 | Iela Lund | 9 | Daughter | — | Wisconsin |
| 77 | Laura Lund | 7 | Daughter | — | Wisconsin |
| 78 | Robert B. Wilson | 43 | Head | Farmer | Wisconsin |
| 79 | Hazel Wilson | 43 | Wife | — | Wisconsin |
| 80 | Clifford Rayment | 25 | Lodger | Teacher | Wisconsin |
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)