CJ
Clarence Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cass-County, North Dakota
Our Model Tree links this Clarence Johnson across the 1910, 1920, 1930 and 1940 US Censuses in Cass-County, North Dakota (XGBoost, ~Confirmed), with identified parents Anton & Nels — first a son (b.~1901), then head of a 5-person household.
Age 39
b. ~1901
Male
Son
Born: North Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, North Dakota |
| Surname | Johnson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Fargo City |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same house |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Fargo City |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Clarence | Age | Birth yr |
|---|---|---|---|---|
| Gladys Johnson | Daughter | — | 29 | ~1911 |
| Pearl Johnson | Daughter | — | 30 | ~1910 |
| Nels Johnson | Head | — | 63 | ~1877 |
| Joseph Johnson | Son | — | 29 | ~1911 |
| Clarence Johnson | Son | — | 39 | ~1901 |
Census Appearances
1910
Cass, North …
Son, age 7
Cass, North Dakota · implied b. ~1903 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Clarence T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1920
Cass, North …
Son, age 16
Cass, North Dakota · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Cass, North …
Son, age 27
Cass, North Dakota · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Assistant Cashier |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Cass-County, North …
Son, age 39
Cass-County, North Dakota · implied b. ~1901 — 5 household members
| Surname | Johnson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Fargo City |
| 1935 Residence (County) | Cass |
| Highest Grade | 4 |
| 1935 Residence | Same house |
| 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 Clarence Johnson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Anton Johnson (~0.92 confidence) and father Nels Johnson (~0.92 confidence) and father Baron Johnson (~0.92 confidence) and mother Caroline Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Anton Johnson
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Nels Johnson
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Baron Johnson
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Caroline Johnson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clarence Johnson
Son · 1940 · age 39 · b. ~1901 · North Dakota
★ You are viewing this record
Sibling
Gladys Johnson
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Johnson
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pearl Johnson
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cass-County, North Dakota
Open full size
1940 US Federal Census — Cass-County, North Dakota
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02996-00444)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bruce Endahl | 3 | Son | — | North Dakota |
| 42 | Gloria June Endahl | 5 | Daughter | — | North Dakota |
| 43 | Carl J. Seaquist | 57 | Head | Traveling Salesman | Minnesota |
| 44 | Christine Seaquist | 56 | Wife | — | Minnesota |
| 45 | Robert W. Seaquist | 27 | Son | Orchestra Player | Minnesota |
| 46 | Michael L. Sullivan | 43 | Head | — | Illinois |
| 47 | Minnie H. Sullivan | 42 | Wife | — | Illinois |
| 48 | John L. Sullivan | 19 | Son | Truck Driver | North Dakota |
| 49 | Clarence M. Sullivan | 15 | Son | — | North Dakota |
| 50 | Vera K. Sullivan | 10 | Daughter | — | North Dakota |
| 51 | Patrick J. Sullivan | 8 | Son | — | North Dakota |
| 52 | Mary Margaret Sullivan | 5 | Daughter | — | North Dakota |
| 53 | Geraldine M. Sullivan | 3 | Daughter | — | North Dakota |
| 55 | Peter Amundson | 63 | Head | Water Foreman | Norway |
| 56 | Julia Amundson | 64 | Wife | — | Norway |
| 57 | Arthur Amundson | 27 | Son | Greenhouse Laborer | North Dakota |
| 58 | Lawrence Anderson | 36 | Head | Truck Driver | North Dakota |
| 59 | L. Linai Anderson | 36 | Wife | — | Minnesota |
| 60 | Newell M. Anderson | 13 | Son | — | North Dakota |
| 61 | Lawrence S. Anderson | 11 | Son | — | Minnesota |
| 62 | Lynne B. Anderson | 0 | Son | — | North Dakota |
| 63 | Elias Larson | 52 | Head | Moulder | Norway |
| 64 | Elona Larson | 22 | Son | — | North Dakota |
| 65 | Clarence Schurr | 45 | Head | Proprietor | North Dakota |
| 66 | Mildred H. Schurr | 41 | Wife | Saleslady | North Dakota |
| 67 | Delmer W. Schurr | 18 | Son | Errand Boy | North Dakota |
| 68 | Jefferson L. Schurr | 15 | Son | Errand Boy | North Dakota |
| 69 | Robert Duane Schurr | 2 | Son | — | North Dakota |
| 70 | Julius O. Somsen | 55 | Head | Proprietor | South Dakota |
| 71 | Rose Somsen | 55 | Wife | Saleslady | Iowa |
| 72 | Nels A. Johnson | 63 | Head | Shoemaker | Norway |
| 73 | Clarence Johnson THIS PERSON | 39 | Son | — | North Dakota |
| 74 | Pearl D. Johnson | 30 | Daughter | Packer | North Dakota |
| 75 | Gladys G. Johnson | 29 | Daughter | Cream Tester | North Dakota |
| 76 | Joseph A. Johnson | 29 | Son | Helper Laborer | North Dakota |
| 77 | Robert M. Grance | 67 | Head | Truck Driver | Pennsylvania |
| 78 | Frieda Augusta Grance | 49 | Wife | — | North Dakota |
| 79 | Marie Hubner | 81 | Mother-in-law | — | Germany |
| 80 | Peter M. Deibert | 33 | Head | Welder | North Dakota |
Related Census Records
Pedigree Summary
Clarence + 3 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)