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Bertha Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grant-County, North Dakota
Our Model Tree links this Bertha Nelson across the 1920, 1930 and 1940 US Censuses in Grant-County, North Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1872), then head of a 3-person household.
Age 68
b. ~1872
Female
Spouse
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Grant-County, North Dakota |
| Surname | Nelson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Valley View Township |
| 1935 Residence (County) | Grant |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Township / Ward | Valley View Township |
| Est. Birth Year | ~1872 |
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 Bertha | Age | Birth yr |
|---|---|---|---|---|
| M Nelson | Head | — | 69 | ~1871 |
| William Nelson | Son | — | 28 | ~1912 |
| Bertha Nelson | Spouse | — | 68 | ~1872 |
Census Appearances
1920
Grant, North …
Spouse, age 48
Grant, North Dakota · implied b. ~1872 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1902 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | No |
| Mother Tongue | Danish |
| Birth Country | Denmark |
| Year of Naturalization | 1907 |
| Birthplace (normalized) | denmark |
1930
Grant, North …
Other, age 57
Grant, North Dakota · implied b. ~1873 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Bertha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 33 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Grant-County, North …
Spouse, age 68
Grant-County, North Dakota · implied b. ~1872 — 3 household members
| Surname | Nelson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Valley View Township |
| 1935 Residence (County) | Grant |
| Naturalization Status | Naturalized |
| Highest Grade | 7 |
| 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 Bertha Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Bertha Nelson
Spouse · 1940 · age 68 · b. ~1872 · North Dakota
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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 — Grant-County, North Dakota
Open full size
1940 US Federal Census — Grant-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03003-00207)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Almert F. Arndt | 40 | Head | Farmer | Minnesota |
| 2 | Ella Arndt | 37 | Wife | — | Minnesota |
| 3 | Gordon Arndt | 14 | Son | — | North Dakota |
| 4 | Lester Arndt | 8 | Son | — | North Dakota |
| 5 | Donald Arndt | 3 | Son | — | North Dakota |
| 6 | Carlyle Arndt | 2 | Son | — | North Dakota |
| 7 | Bernard Emch | 23 | Head | Farmer | North Dakota |
| 8 | Grace Emch | 24 | Wife | — | North Dakota |
| 9 | Mary Lou Emch | 3 | Daughter | — | North Dakota |
| 10 | Peggy Emch | 2 | Daughter | — | North Dakota |
| 11 | Joseph P. O'Donnell | 50 | Head | Farmer | Wisconsin |
| 12 | Cordelia O'Donnell | 47 | Wife | — | Iowa |
| 13 | Amerson O'Donnell | 14 | Son | — | North Dakota |
| 14 | James O'Donnell | 1 | Son | — | North Dakota |
| 15 | William Anderson | 52 | Head | Farmer | New York |
| 16 | Nancy Anderson | 48 | Wife | — | Missouri |
| 17 | Richard Anderson | 28 | Son | — | Minnesota |
| 18 | Gerald Anderson | 20 | Son | Gardener | North Dakota |
| 19 | Joyce Anderson | 18 | Daughter | — | North Dakota |
| 20 | Gloria Anderson | 16 | Daughter | — | North Dakota |
| 21 | Esther Anderson | 15 | Daughter | — | North Dakota |
| 22 | Donald Anderson | 13 | Son | — | North Dakota |
| 23 | Vernon Anderson | 10 | Son | — | North Dakota |
| 24 | M. P. Nelson | 69 | Head | Farmer | Denmark |
| 25 | Bertha Nelson THIS PERSON | 68 | Wife | — | Denmark |
| 26 | William Nelson | 28 | Son | Farm Laborer | North Dakota |
| 27 | Albert S. Halvorson | 63 | Head | Farmer | Sweden |
| 28 | Emma Halvorson | 62 | Wife | — | Sweden |
| 29 | Irene Halvorson | 21 | Daughter | — | North Dakota |
| 30 | Gilbert O. Moen | 47 | Head | Farmer | Minnesota |
| 31 | Novella Moen | 39 | Wife | — | Illinois |
| 32 | Beauford Moen | 20 | Son | Farm Laborer | North Dakota |
| 33 | Alvin Moen | 14 | Son | — | North Dakota |
| 34 | Lyle Moen | 6 | Son | — | North Dakota |
| 35 | Robert D. Mund | 34 | Head | Farmer | North Dakota |
| 36 | Edna Mund | 27 | Wife | — | North Dakota |
| 37 | Leonard Mund | 6 | Son | — | North Dakota |
| 38 | Lulu Mund | 5 | Daughter | — | North Dakota |
| 39 | Donald Mund | 1 | Son | — | North Dakota |
| 40 | Augustina Traxel | 69 | Head | — | Russia |
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)