JW
James Wallace — 1940 US Census Record
Model Tree available1940 United States Federal Census · Boone-County, Iowa
Our Model Tree links this James Wallace across the 1920, 1930 and 1940 US Censuses in Boone-County, Iowa (XGBoost, ~Confirmed), with identified parents Henry & Henry — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Iowa |
| Surname | Wallace |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Boone city |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Occupation | Student |
| Industry | at school |
| Class of Worker | PW |
| Hours Worked | 5 |
| Income (1939) | 150 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Student |
| Township / Ward | Boone City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Maude Wallace | Daughter | — | 15 | ~1925 |
| Naomi Wallace | Daughter | — | 19 | ~1921 |
| Henry Wallace | Head | — | 41 | ~1899 |
| James Wallace | Son | — | 21 | ~1919 |
| Henry Wallace | Son | — | 13 | ~1927 |
| Sophie Wallace | Spouse | — | 41 | ~1899 |
Census Appearances
1920
Boone, Iowa
Son, age
Boone, Iowa · implied b. ~1920 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wallace |
| Given Name | James A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Boone, Iowa
Son, age 11
Boone, Iowa · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wallace |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Boone-County, Iowa
Son, age 21
Boone-County, Iowa · implied b. ~1919 — 6 household members
| Surname | Wallace |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Boone city |
| 1935 Residence (County) | Boone |
| Occupation | Student |
| Industry | at school |
| Class of Worker | PW |
| Hours Worked | 5 |
| Income (1939) | 150 |
| Highest Grade | C 1 |
| 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 Wallace across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Wallace (~0.92 confidence) and father Henry Wallace (~0.92 confidence) and father Morris Wallace (~0.92 confidence) and mother Sophia Wallace (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Wallace
b. ~1899
Source father
● Household
· direct · ~0.92
Father
Henry Wallace
b. ~1899
Source father
● Household
· direct · ~0.92
Father
Morris Wallace
b. ~1899
Source father
● Household
· direct · ~0.92
Mother
Sophia Wallace
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Wallace
Son · 1940 · age 21 · b. ~1919 · Iowa
★ You are viewing this record
Sibling
Henry Wallace
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Naomi Wallace
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maude Wallace
Sibling · 1940 · age 15
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 — Boone-County, Iowa
Open full size
1940 US Federal Census — Boone-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01141-00430)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mountain E. Williams | 47 | Brother | Construction | Missouri |
| 42 | Nell C. Mcbennett | 58 | Sister | Cook | Missouri |
| 43 | Clarence P. Snodden | 22 | Head | Farm Laborer | Iowa |
| 44 | Ruth M. Snodden | 23 | Wife | — | Iowa |
| 45 | Vernon T. Maynard | 32 | Head | Carman | Iowa |
| 46 | Bertha B. Maynard | 35 | Wife | — | Missouri |
| 47 | Mary F. Maynard | 15 | Daughter | — | Iowa |
| 48 | Robert L. Maynard | 13 | Son | — | Iowa |
| 49 | Richard H. Maynard | 11 | Son | — | Iowa |
| 50 | John D. Maynard | 8 | Son | — | Iowa |
| 51 | Thomas E. Maynard | 4 | Son | — | Iowa |
| 52 | Henry A. Wallace | 41 | Head | Chief Engineer | Iowa |
| 53 | Sophie A. Wallace | 41 | Wife | — | Iowa |
| 54 | James A. Wallace THIS PERSON | 21 | Son | Student | Iowa |
| 55 | Naomi L. Wallace | 19 | Daughter | Student | Iowa |
| 56 | Maude M. Wallace | 15 | Daughter | — | Iowa |
| 57 | Henry N. Wallace | 13 | Son | — | Iowa |
| 58 | Albert L. Allison | 45 | Head | Repairman | Iowa |
| 59 | Lola F. Allison | 36 | Wife | Collector | Iowa |
| 60 | George L. Neff | 36 | Head | Truck Driver | Iowa |
| 61 | Gloria B. Neff | 32 | Wife | — | Iowa |
| 62 | Henry A. Stolze | 72 | Head | — | Germany |
| 63 | Emma D. Stolze | 69 | Wife | — | New York |
| 64 | Anna E. Dickson | 44 | Head | — | Missouri |
| 65 | Billy D. Dickson | 6 | Son | — | Iowa |
| 66 | Fannie B. Martin | 73 | Head | — | Pennsylvania |
| 67 | Alfred E. Hunter | 31 | Head | Preacher | Iowa |
| 68 | Fern L. Hunter | 25 | Wife | — | Iowa |
| 69 | Harold A. Smart | 26 | Head | Laborer | Illinois |
| 70 | Bertha Smart | 22 | Wife | — | Iowa |
| 71 | Beverly J. Smart | 9 | Daughter | — | Iowa |
| 72 | Billy J. Smart | 1 | Son | — | Colorado |
| 73 | Paul J. Ehmann | 31 | Head | Carpenter | Iowa |
| 74 | Lois A. Ehmann | 22 | Wife | — | Iowa |
| 75 | Gwendolyn L. Ehmann | 12 | Daughter | — | Iowa |
| 76 | Clarence D. Helm | 28 | Head | Signal Keeper | Illinois |
| 77 | Alice M. Helm | 31 | Wife | — | Iowa |
| 78 | Gerald L. Helm | 1 | Son | — | Iowa |
| 79 | Clarence Reed | 56 | Head | Clerk | Iowa |
| 80 | Grace Reed | 58 | Wife | — | 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)