CP
Clara Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cavalier-County, North Dakota
Our Model Tree links this Clara Peterson across the 1910, 1920, 1930 and 1940 US Censuses in Cavalier-County, North Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 6-person household.
Age 54
b. ~1886
Female
Spouse
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cavalier-County, North Dakota |
| Surname | Peterson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Hope Township |
| 1935 Residence (County) | Cavalier |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Hope Township |
| Est. Birth Year | ~1886 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Clara | Age | Birth yr |
|---|---|---|---|---|
| Charles Peterson | Head | — | 58 | ~1882 |
| Clara Peterson | Spouse | — | 54 | ~1886 |
| Gilbert Peterson | Son | — | 25 | ~1915 |
| Irma Peterson | Daughter | — | 14 | ~1926 |
| Allen Peterson | Son | — | 15 | ~1925 |
| Otto Peterson | Son | — | 23 | ~1917 |
Census Appearances
1910
Cavalier, North …
Spouse, age 27
Cavalier, North Dakota · implied b. ~1883 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Years Married | 3 |
| Children Born | 3 |
| Children Living | 3 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1920
Cavalier, North …
Spouse, age 37
Cavalier, North Dakota · implied b. ~1883 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Clara |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Cavalier, North …
Spouse, age 45
Cavalier, North Dakota · implied b. ~1885 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Age at First Marriage | 23 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Cavalier-County, North …
Spouse, age 54
Cavalier-County, North Dakota · implied b. ~1886 — 6 household members
| Surname | Peterson |
| Given Name | Clara |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Hope Township |
| 1935 Residence (County) | Cavalier |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Peterson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Clara Peterson
Spouse · 1940 · age 54 · b. ~1886 · North Dakota
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cavalier-County, North Dakota
Open full size
1940 US Federal Census — Cavalier-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02998-00181)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helgert J Romfo | 34 | Head | Farming | North Dakota |
| 2 | Ellie G Romfo | 39 | Wife | — | North Dakota |
| 3 | Duane L Romfo | 12 | Son | — | North Dakota |
| 4 | Neil H Romfo | 11 | Son | — | North Dakota |
| 5 | Ramona G Romfo | 9 | Daughter | — | North Dakota |
| 6 | Armond B Romfo | 7 | Son | — | North Dakota |
| 7 | Willis D Romfo | 5 | Son | — | North Dakota |
| 8 | Marlys A Romfo | 3 | Daughter | — | North Dakota |
| 9 | Marlene L Romfo | 1 | Daughter | — | North Dakota |
| 10 | George Christianson | 50 | Head | Farming | North Dakota |
| 11 | Sevard Peterson | 77 | Head | Farming | Norway |
| 12 | Anna Peterson | 76 | Wife | — | Norway |
| 13 | Emma K Graves | 44 | Head | — | North Dakota |
| 14 | Carl Christianson | 34 | Head | Road Maintainer | North Dakota |
| 15 | Blanche Christianson | 33 | Wife | Grade Teacher | North Dakota |
| 16 | Marvel G Christianson | 5 | Daughter | — | North Dakota |
| 17 | Betty A Christianson | 4 | Daughter | — | North Dakota |
| 18 | Carl D Christianson | 2 | Son | — | North Dakota |
| 19 | Lars Christianson | 75 | Head | Farming | Norway |
| 20 | Pauline Christianson | 61 | Wife | — | Norway |
| 21 | Oscar D Christianson | 36 | Son | Laborer | North Dakota |
| 22 | Ina A Christianson | 28 | Daughter-in-law | — | North Dakota |
| 23 | Gene D Christianson | 4 | Grandson | — | North Dakota |
| 24 | Allen D Christianson | 3 | Grandson | — | North Dakota |
| 25 | P Leidholm | 33 | Head | Laborer | North Dakota |
| 26 | Daphne Leidholm | 20 | Wife | — | North Dakota |
| 27 | Leona Leidholm | 0 | Daughter | — | North Dakota |
| 28 | Clarence Lee | 20 | Hired hand | Laborer | North Dakota |
| 29 | Knut G Knutson | 66 | Head | Laborer | Norway |
| 30 | Ole G Knutson | 64 | Brother | Laborer | Norway |
| 31 | Martha J Stone | 68 | Head | — | Minnesota |
| 32 | Morris Stone | 25 | Son | Farming | North Dakota |
| 33 | Palmer J Olsen | 30 | Head | Farming | North Dakota |
| 34 | Mabel A Olsen | 27 | Wife | Grade Teacher | North Dakota |
| 35 | Charles E Peterson | 58 | Head | Farming | North Dakota |
| 36 | Clara Peterson THIS PERSON | 54 | Wife | — | North Dakota |
| 37 | Gilbert Peterson | 25 | Son | Farming | North Dakota |
| 38 | Otto Peterson | 23 | Son | Farming | North Dakota |
| 39 | Irma J Peterson | 14 | Daughter | — | North Dakota |
| 40 | Allen A Peterson | 15 | Son | — | North Dakota |
Related Census Records
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)