AJ
Alfred Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Grand-Forks-County, North Dakota
Our Model Tree links this Alfred Johnson across the 1920, 1930 and 1940 US Censuses in Grand-Forks-County, North Dakota (XGBoost, ~Confirmed), with identified parents Emma & Emma — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: North Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grand-Forks-County, North Dakota |
| Surname | Johnson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Allendale |
| 1935 Residence (County) | Grand Forks |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Laborer |
| Township / Ward | Allendale |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Alfred | Age | Birth yr |
|---|---|---|---|---|
| Edna Johnson | Daughter | — | 26 | ~1914 |
| Doris Johnson | Daughter | — | 24 | ~1916 |
| Marcus Johnson | Head | — | 59 | ~1881 |
| Henry Watson | Other | — | 20 | ~1920 |
| Alfred Johnson | Son | — | 21 | ~1919 |
| Donald Johnson | Son | — | 19 | ~1921 |
| Emma Johnson | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Grand Forks, …
Son, age 1
Grand Forks, North Dakota · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alfred E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Grand Forks, …
Son, age 11
Grand Forks, North Dakota · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alfred E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Grand-Forks-County, North …
Son, age 21
Grand-Forks-County, North Dakota · implied b. ~1919 — 7 household members
| Surname | Johnson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Allendale |
| 1935 Residence (County) | Grand Forks |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | G 8 |
| 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 Alfred Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Emma Johnson (~0.92 confidence) and mother Emma Johnson (~0.92 confidence) and father Marcus Johnson (~0.92 confidence) and father Marcus Johnson (~0.92 confidence) and father Martin Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Emma Johnson
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Emma Johnson
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
Marcus Johnson
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Marcus Johnson
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Martin Johnson
b. ~1881
Source father
● Household
· direct · ~0.92
This person
Anchor record
Alfred Johnson
Son · 1940 · age 21 · b. ~1919 · North Dakota
★ You are viewing this record
Sibling
Doris Johnson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Johnson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Johnson
Sibling · 1940 · age 26
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 — Grand-Forks-County, North Dakota
Open full size
1940 US Federal Census — Grand-Forks-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03002-00014)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George W. Block | 50 | Head | Farmer | North Dakota |
| 2 | Laura Block | 46 | Wife | — | Wisconsin |
| 3 | "Russell ""Ab""" Block | 24 | Son | — | North Dakota |
| 4 | Warren Block | 17 | Son | — | North Dakota |
| 5 | Wanda Block | 15 | Daughter | — | North Dakota |
| 6 | Eunice Block | 5 | Daughter | — | North Dakota |
| 7 | Woodrow Heth | 21 | Son-in-law | Laborer | North Dakota |
| 8 | June Heth | 18 | Daughter | — | North Dakota |
| 9 | Marcus Johnson | 59 | Head | Farmer | Wisconsin |
| 10 | Emma Johnson | 62 | Wife | — | Illinois |
| 11 | Edna Marie Johnson | 26 | Daughter | — | North Dakota |
| 12 | Doris Johnson | 24 | Daughter | — | North Dakota |
| 13 | Alfred Johnson THIS PERSON | 21 | Son | Laborer | North Dakota |
| 14 | Donald Johnson | 19 | Son | Laborer | North Dakota |
| 15 | Henry Watson | 20 | Hired hand | Laborer | North Dakota |
| 16 | Balthazar Geatz | 58 | Head | Farmer | Russia |
| 17 | Theresa Geatz | 58 | Wife | — | Russia |
| 18 | Barbara Geatz | 25 | Daughter | — | North Dakota |
| 19 | Angelia Geatz | 17 | Daughter | — | North Dakota |
| 20 | John Geatz | 20 | Son | Laborer | North Dakota |
| 21 | Theonia Geatz | 19 | Daughter-in-law | — | North Dakota |
| 22 | Lars Nelson | 42 | Head | Farmer | Norway |
| 23 | Tizzie Nelson | 38 | Wife | — | Minnesota |
| 24 | Harry Nelson | 20 | Son | Laborer | Minnesota |
| 25 | Martin Nelson | 18 | Son | Laborer | North Dakota |
| 26 | Evelyn Nelson | 16 | Daughter | — | North Dakota |
| 27 | Selma Nelson | 14 | Daughter | — | North Dakota |
| 28 | Floyd Nelson | 11 | Son | — | North Dakota |
| 29 | Milton Nelson | 6 | Son | — | North Dakota |
| 30 | Clarence Nelson | 4 | Son | — | North Dakota |
| 31 | Shirley Ann Nelson | 1 | Daughter | — | North Dakota |
| 32 | Knute Kjembus | 35 | Head | Farmer | North Dakota |
| 33 | Elmer Kjembus | 31 | Brother | Laborer | North Dakota |
| 34 | Mary Kjembus | 68 | Mother | — | Norway |
| 35 | Henry Breton | 36 | Head | Farmer | North Dakota |
| 36 | Anne Breton | 37 | Wife | — | Minnesota |
| 37 | Mary Ann Breton | 9 | Daughter | — | North Dakota |
| 38 | Thomas Breton | 7 | Son | — | North Dakota |
| 39 | Frank Fritz | 56 | Head | Farmer | Illinois |
| 40 | Celestine Fritz | 48 | Wife | — | Iowa |
Pedigree Summary
Alfred + 3 siblings
Gen 1 · 5 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)