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James Allison — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allamakee-County, Iowa
Our Model Tree links this James Allison across the 1920, 1930 and 1940 US Censuses in Allamakee-County, Iowa (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allamakee-County, Iowa |
| Surname | Allison |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ludlow |
| 1935 Residence (County) | Allamakee |
| Additional Details | |
| Occupation | Farm Helper |
| Industry | Farming |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 366 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farm Helper |
| Township / Ward | Ludlow |
| Est. Birth Year | ~1917 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Allison | Son | — | 23 | ~1917 |
| Olga Allison | Spouse | — | 51 | ~1889 |
| Grant Allison | Son | — | 20 | ~1920 |
| Avis Allison | Daughter | — | 28 | ~1912 |
| Palmer Allison | Son | — | 26 | ~1914 |
| John Allison | Head | — | 59 | ~1881 |
Census Appearances
1920
Allamakee, Iowa
Son, age 2
Allamakee, Iowa · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allison |
| Given Name | James L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Minnesota |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Allamakee, Iowa
Son, age 13
Allamakee, Iowa · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allison |
| Given Name | James J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Allamakee-County, Iowa
Son, age 23
Allamakee-County, Iowa · implied b. ~1917 — 6 household members
| Surname | Allison |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ludlow |
| 1935 Residence (County) | Allamakee |
| Occupation | Farm Helper |
| Industry | Farming |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 366 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 James Allison across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Allison (~0.92 confidence) and father John Allison (~0.92 confidence) and father John Allison (~0.92 confidence) and mother Olga Allison (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Allison
b. ~1882
Source father
● Household
· direct · ~0.92
Father
John Allison
b. ~1881
Source father
● Household
· direct · ~0.92
Father
John Allison
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Olga Allison
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Allison
Son · 1940 · age 23 · b. ~1917 · Iowa
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Sibling
Palmer Allison
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Avis Allison
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grant Allison
Sibling · 1940 · age 20
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 — Allamakee-County, Iowa
Open full size
1940 US Federal Census — Allamakee-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01136-00955)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elmer Klocke | 35 | Head | Farmer | Iowa |
| 42 | Bernice Klocke | 31 | Wife | — | Iowa |
| 43 | James Klocke | 3 | Son | — | Iowa |
| 44 | John Nagel | 59 | Head | Farmer | Iowa |
| 45 | Lena Nagel | 54 | Wife | — | Iowa |
| 46 | Edward Nagel | 32 | Head | Farmer | Iowa |
| 47 | Aurelia Nagel | 26 | Wife | — | Iowa |
| 48 | Sylvia Nagel | 5 | Daughter | — | Iowa |
| 49 | Roland Nagel | 3 | Son | — | Iowa |
| 50 | August Nagel | 61 | Head | Farmer | Iowa |
| 51 | Minnie Nagel | 51 | Wife | — | Illinois |
| 52 | Mindert Nagel | 35 | Head | Farmer | Iowa |
| 53 | Helma Nagel | 29 | Wife | — | Iowa |
| 54 | Richard Nagel | 3 | Son | — | Iowa |
| 55 | Edward Brandt | 43 | Head | Farmer | Iowa |
| 56 | Lenora Brandt | 43 | Wife | — | Iowa |
| 57 | Floyd Brandt | 24 | Son | Farmer | Iowa |
| 58 | Ralph Brandt | 22 | Son | Farm Helper | Iowa |
| 59 | Willis Brandt | 15 | Son | — | Iowa |
| 60 | Freddie Schlitter | 35 | Head | Farmer | Iowa |
| 61 | Geneva Schlitter | 30 | Wife | — | Iowa |
| 62 | Darlene Schlitter | 9 | Daughter | — | Iowa |
| 63 | Marcella Schlitter | 6 | Daughter | — | Iowa |
| 64 | Anna Mae Schlitter | 3 | Daughter | — | Iowa |
| 65 | Albert Evans | 50 | Head | Road Worker | Iowa |
| 66 | Grace Evans | 47 | Wife | — | Iowa |
| 67 | John Q. Allison | 59 | Head | Farmer | Iowa |
| 68 | Olga Allison | 51 | Wife | — | Minnesota |
| 69 | Avis Allison | 28 | Daughter | Teacher | Iowa |
| 70 | Palmer Allison | 26 | Son | Farm Helper | Iowa |
| 71 | James Allison THIS PERSON | 23 | Son | Farm Helper | Iowa |
| 72 | Grant Allison | 20 | Son | Farmer | Iowa |
| 73 | August Held | 50 | Head | Farmer | Iowa |
| 74 | Esther Held | 45 | Wife | — | Iowa |
| 75 | Clifford Held | 21 | Son | Farm Helper | Iowa |
| 76 | Carl Shafer | 52 | Head | Farmer | Iowa |
| 77 | Martha Shafer | 53 | Wife | — | Iowa |
| 78 | Reuben Shafer | 15 | Son | — | Iowa |
| 79 | Ruth Shafer | 14 | Daughter | — | Iowa |
| 80 | Charles Klocke | 22 | Head | Day Laborer | Iowa |
Pedigree Summary
James + 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)