FL
Fred Lewis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this Fred Lewis across the 1920, 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed), with identified parents Elizabeth & Frances — first a son (b.~1895), then head of a 4-person household.
Age 45
b. ~1895
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | Lewis |
| Given Name | Fred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Walnut town |
| 1935 Residence (County) | Pottawattamie |
| Additional Details | |
| Occupation | Assistant |
| Industry | Harness Shop |
| Class of Worker | PW |
| Hours Worked | 65 |
| Income (1939) | 624 |
| Highest Grade | C-2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Assistant |
| Township / Ward | Walnut Town |
| Est. Birth Year | ~1895 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Fred | Age | Birth yr |
|---|---|---|---|---|
| Harry Lewis | Head | — | 79 | ~1861 |
| Elizabeth Lewis | Spouse | — | 80 | ~1860 |
| Caroline Lewis | Other | — | 32 | ~1908 |
| Fred Lewis | Son | — | 45 | ~1895 |
Census Appearances
1920
Pottawattamie, Iowa
Son, age 25
Pottawattamie, Iowa · implied b. ~1895 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Ford W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Harness maker |
| Industry | H. Shop |
| Class of Worker | S |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Pottawattamie, Iowa
Son, age 35
Pottawattamie, Iowa · implied b. ~1895 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Fred W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Salesman |
| Industry | Insurance |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Son, age 45
Pottawattamie-County, Iowa · implied b. ~1895 — 4 household members
| Surname | Lewis |
| Given Name | Fred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Walnut town |
| 1935 Residence (County) | Pottawattamie |
| Occupation | Assistant |
| Industry | Harness Shop |
| Class of Worker | PW |
| Hours Worked | 65 |
| Income (1939) | 624 |
| Highest Grade | C-2 |
| 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 Fred Lewis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Lewis (~0.92 confidence) and mother Frances Lewis (~0.92 confidence) and father Harry Lewis (~0.92 confidence) and father Harry Lewis (~0.92 confidence) and father Nathan Lewis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Lewis
b. ~1860
Source mother
● Household
· direct · ~0.92
Mother
Frances Lewis
b. ~1860
Source mother
● Household
· direct · ~0.92
Father
Harry Lewis
b. ~1861
Source father
● Household
· direct · ~0.92
Father
Harry Lewis
b. ~1861
Source father
● Household
· direct · ~0.92
Father
Nathan Lewis
b. ~1861
Source father
● Household
· direct · ~0.92
This person
Anchor record
Fred Lewis
Son · 1940 · age 45 · b. ~1895 · 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 — Pottawattamie-County, Iowa
Open full size
1940 US Federal Census — Pottawattamie-County, Iowa
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01199-00654)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Chris H. Johansen | 66 | Head | — | Germany |
| 42 | Pauline Johansen | 63 | Wife | — | Germany |
| 43 | Catharine Lowless | 72 | Head | — | Pennsylvania |
| 44 | John Kochenberg | 66 | Head | Employer | Iowa |
| 45 | Bertha Kochenberg | 59 | Wife | — | Iowa |
| 46 | Arthur Kochenberg | 34 | Son | Clerk | Iowa |
| 47 | Alvin Kochenberg | 32 | Son | Bookkeeper | Iowa |
| 48 | Clarence Walters | 39 | Head | Auto Mechanic | Iowa |
| 49 | Ethel Walters | 38 | Wife | — | Iowa |
| 50 | Clara Walters | 18 | Daughter | — | Iowa |
| 51 | Dorothy Walters | 15 | Daughter | — | Iowa |
| 52 | Donald Walters | 13 | Son | — | Iowa |
| 53 | Mary Walters | 12 | Daughter | — | Iowa |
| 54 | Robert Walters | 9 | Son | — | Iowa |
| 55 | Marjorie Walters | 2 | Daughter | — | Iowa |
| 57 | Michael Martin | 81 | Head | — | Illinois |
| 58 | Mary Martin | 68 | Wife | — | Iowa |
| 59 | Harry Lewis | 79 | Head | Harness Maker | Iowa |
| 60 | Elizabeth Lewis | 80 | Wife | — | Iowa |
| 61 | Fred Lewis THIS PERSON | 45 | Son | Assistant | Iowa |
| 62 | Caroline Lewis | 32 | Daughter-in-law | — | Iowa |
| 63 | William Thompson | 28 | Head | Trucker | Iowa |
| 64 | Adell Thompson | 24 | Wife | — | Iowa |
| 65 | Olathe Decker | 39 | Head | Well Digging | Iowa |
| 66 | Bonnie Decker | 37 | Wife | — | Iowa |
| 67 | Marcella Decker | 14 | Daughter | — | Iowa |
| 68 | Norman Decker | 12 | Son | — | Iowa |
| 69 | Ronald Decker | 11 | Son | — | Iowa |
| 70 | Douglas Decker | 9 | Son | — | Iowa |
| 71 | Lesley Decker | 7 | Son | — | Iowa |
| 72 | Keith Decker | 5 | Son | — | Iowa |
| 73 | Max Decker | 3 | Son | — | Iowa |
| 74 | Sandra Decker | 1 | Daughter | — | Iowa |
| 75 | August Fischer | 42 | Head | Hatchery | Iowa |
| 76 | Caroline Fischer | 50 | Wife | — | Iowa |
| 77 | Donald Fischer | 19 | Son | — | Iowa |
| 78 | Delia Christensen | 21 | Daughter | Operator | Iowa |
Pedigree Summary
Fred
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)