LS
Lester Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Keokuk-County, Iowa
Our Model Tree links this Lester Smith across the 1920, 1930 and 1940 US Censuses in Keokuk-County, Iowa (XGBoost, ~Confirmed), with identified parents Anton & Anton — first a son (b.~1899), then head of a 2-person household.
Age 41
b. ~1899
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Keokuk-County, Iowa |
| Surname | Smith |
| Given Name | Lester |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Plank Township |
| 1935 Residence (County) | Keokuk County |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 452 |
| Highest Grade | 7 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Plank Township |
| Est. Birth Year | ~1899 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lester | Age | Birth yr |
|---|---|---|---|---|
| Anton Smith | Head | — | 76 | ~1864 |
| Lester Smith | Son | — | 41 | ~1899 |
Census Appearances
1920
Keokuk, Iowa
Son, age 21
Keokuk, Iowa · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smita |
| Given Name | Lester |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | France |
| Mother's Birthplace | California |
| Occupation | Laborer |
| Industry | Home Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Keokuk, Iowa
Son, age 31
Keokuk, Iowa · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Lester |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Dazic|Danzig |
| Mother's Birthplace | California |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Keokuk-County, Iowa
Son, age 41
Keokuk-County, Iowa · implied b. ~1899 — 2 household members
| Surname | Smith |
| Given Name | Lester |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Plank Township |
| 1935 Residence (County) | Keokuk County |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 452 |
| Highest Grade | 7 |
| 1935 Residence | Same house |
| 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 Lester Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Anton Smith (~0.92 confidence) and father Anton Smita (~0.92 confidence) and father Anton Smith (~0.92 confidence) and mother Tillia Smita (~0.92 confidence) and mother Mary Smith (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Anton Smith
b. ~1864
Source father
● Household
· direct · ~0.92
Father
Anton Smita
b. ~1864
Source father
● Household
· direct · ~0.92
Father
Anton Smith
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Tillia Smita
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lester Smith
Son · 1940 · age 41 · b. ~1899 · Iowa
★ 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 — Keokuk-County, Iowa
Open full size
1940 US Federal Census — Keokuk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01172-00868)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Katharine Northup | 26 | Wife | — | Iowa |
| 42 | Elair May Northup | 1 | Daughter | — | Iowa |
| 43 | John Mewes | 73 | Head | Farmer | Germany |
| 44 | Herman Mewes | 79 | Brother | — | Germany |
| 45 | Diedrich Nagel | 73 | Head | Farmer | Germany |
| 46 | Meta Nagel | 28 | Daughter | — | Iowa |
| 47 | William Nagel | 36 | Son | Farmer | Iowa |
| 48 | Edith Nagel | 34 | Daughter | — | Iowa |
| 49 | Otto D. Nagel | 27 | Son | Farmer | Iowa |
| 50 | Ben Seaba | 31 | Head | Farmer | Iowa |
| 51 | Letha Seaba | 26 | Wife | — | Iowa |
| 52 | Earlene Seaba | 6 | Daughter | — | Iowa |
| 53 | Kenneth Seaba | 4 | Son | — | Iowa |
| 54 | Eugene Seaba | 2 | Son | — | Iowa |
| 55 | Donald Seaba | 1 | Son | — | Iowa |
| 56 | Lewis Seaba | 61 | Head | Farmer | Iowa |
| 57 | Minnie Seaba | 58 | Wife | — | Iowa |
| 58 | William Bott | 49 | Head | Farmer | Iowa |
| 59 | Leota Bott | 41 | Wife | — | Iowa |
| 60 | John Bott | 18 | Son | Farm Laborer | Iowa |
| 61 | Anton Smith | 76 | Head | Farmer | Germany |
| 62 | Lester Smith THIS PERSON | 41 | Son | Farmer | Iowa |
| 63 | Walter Smith | 45 | Head | Farmer | Iowa |
| 64 | Marguerite Smith | 39 | Wife | — | Iowa |
| 65 | Clara Smith | 16 | Daughter | — | Iowa |
| 66 | Gilbert Smith | 14 | Son | Farm Laborer | Iowa |
| 67 | Donald Smith | 11 | Son | — | Iowa |
| 68 | Eugene Smith | 10 | Son | — | Iowa |
| 69 | John Smith | 7 | Son | — | Iowa |
| 70 | Mary Theresa Smith | 5 | Daughter | — | Iowa |
| 71 | John Weber | 69 | Head | Farmer | Germany |
| 72 | Katie Weber | 63 | Wife | — | Iowa |
| 73 | Henry Weber | 31 | Head | Farmer | Iowa |
| 74 | Evelyn Weber | 24 | Wife | — | Iowa |
| 75 | Robert Weber | 2 | Son | — | Iowa |
| 76 | Patrica Weber | 1 | Daughter | — | Iowa |
| 77 | Dawson | 43 | Laborer | Laborer | Iowa |
| 78 | Lee Chambers | 45 | Head | Farmer | So. Dakota |
| 79 | Dora Chambers | 46 | Wife | — | Illinois |
| 80 | Raymond Chambers | 15 | Son | Farm Laborer | Iowa |
Pedigree Summary
Lester
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)