CN
Clara Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mountrail-County, North Dakota
Our Model Tree links this Clara Nelson across the 1930 and 1940 US Censuses in Mountrail-County, North Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 8-person household.
Age 39
b. ~1901
Female
Spouse
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mountrail-County, North Dakota |
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Idaho Township |
| 1935 Residence (County) | Mountrail |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Idaho Township |
| Est. Birth Year | ~1901 |
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 Clara | Age | Birth yr |
|---|---|---|---|---|
| Charlotte Nelson | Daughter | — | 16 | ~1924 |
| Clara Nelson | Spouse | — | 39 | ~1901 |
| Jacqueline Nelson | Daughter | — | 1 | ~1939 |
| Donna Nelson | Daughter | — | 4 | ~1936 |
| Lavonne Nelson | Daughter | — | 5 | ~1935 |
| John Nelson | Head | — | 42 | ~1898 |
| Janet Nelson | Daughter | — | 12 | ~1928 |
| Lois Nelson | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Mountrail, North …
Spouse, age 29
Mountrail, North Dakota · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 21 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Mountrail-County, North …
Spouse, age 39
Mountrail-County, North Dakota · implied b. ~1901 — 8 household members
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Idaho Township |
| 1935 Residence (County) | Mountrail |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Clara Nelson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Clara Nelson
Spouse · 1940 · age 39 · b. ~1901 · 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 — Mountrail-County, North Dakota
Open full size
1940 US Federal Census — Mountrail-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03008-00089)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isaac Svendseid | 57 | Wife | — | Minnesota |
| 2 | Anton T. Peterson | 39 | Head | Laborer | Minnesota |
| 3 | Anna Peterson | 37 | Wife | Cook | Minnesota |
| 4 | Karen Jelleed | 72 | Head | — | Wisconsin |
| 5 | Benjamin Jelleed | 44 | Son | Farmer | Minnesota |
| 6 | Andrew Johnson | 66 | Head | Farmer | Sweden |
| 7 | Annie Johnson | 59 | Wife | — | Sweden |
| 8 | Clifford Johnson | 29 | Son | Farmer | North Dakota |
| 9 | Dolky Johnson | 24 | Son | Farmer | North Dakota |
| 10 | Oscar Kloster | 39 | Head | Farmer | Minnesota |
| 11 | Olga Kloster | 37 | Wife | — | Michigan |
| 12 | Norman Kloster | 7 | Son | — | North Dakota |
| 13 | Eugene Kloster | 4 | Son | — | North Dakota |
| 14 | Palmer Kloster | 39 | Head | Farmer | Minnesota |
| 15 | Sophie Kloster | 31 | Wife | — | Minnesota |
| 16 | Philip Kloster | 8 | Son | — | Minnesota |
| 17 | Harlan Wong | 28 | Head | Farmer | North Dakota |
| 18 | Evelyn Wong | 31 | Wife | Farmer | North Dakota |
| 19 | Jerome Wong | 7 | Son | — | North Dakota |
| 20 | Harold Wong | 5 | Son | — | North Dakota |
| 21 | Richard Wong | 1 | Son | — | North Dakota |
| 22 | Robert Smith | 20 | Laborer | Laborer | North Dakota |
| 23 | David J. Buckman | 47 | Head | Laborer | Sweden |
| 24 | Nettie Buckman | 37 | Wife | — | Minnesota |
| 25 | Arnold Buckman | 13 | Son | — | North Dakota |
| 26 | Milton Buckman | 11 | Son | — | North Dakota |
| 27 | Delores Buckman | 8 | Daughter | — | North Dakota |
| 28 | Oscar Buckman | 5 | Son | — | North Dakota |
| 29 | Calvin Buckman | 4 | Son | — | North Dakota |
| 30 | Cecelia Buckman | 0 | Daughter | — | North Dakota |
| 31 | John L. Nelson | 42 | Head | Farmer | Minnesota |
| 32 | Clara Nelson THIS PERSON | 39 | Wife | — | Minnesota |
| 33 | Charlotte Nelson | 16 | Daughter | Laborer | North Dakota |
| 34 | Janet Nelson | 12 | Daughter | — | North Dakota |
| 35 | Lois Nelson | 8 | Daughter | — | North Dakota |
| 36 | Lavonne Nelson | 5 | Daughter | — | North Dakota |
| 37 | Donna Nelson | 4 | Daughter | — | North Dakota |
| 38 | Jacqueline Nelson | 1 | Daughter | — | North Dakota |
| 39 | Andrew Carlson | 76 | Head | Farmer | Sweden |
| 40 | Inga Carlson | 66 | Wife | — | Sweden |
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)