ML
Marie Lewis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Linn-County, Iowa
Our Model Tree links this Marie Lewis across the 1930 and 1940 US Censuses in Linn-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 10-person household.
Age 20
b. ~1920
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Linn-County, Iowa |
| Surname | Lewis |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fayette Township |
| 1935 Residence (County) | Linn |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C-2 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Fayette Township |
| Est. Birth Year | ~1920 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marie | Age | Birth yr |
|---|---|---|---|---|
| Arland Lewis | Head | — | 44 | ~1896 |
| Loren Lewis | Son | — | 17 | ~1923 |
| Vivian Lewis | Daughter | — | 15 | ~1925 |
| Mary Lewis | Daughter | — | 7 | ~1933 |
| Norman Lewis | Son | — | 3 | ~1937 |
| Neva Lewis | Spouse | — | 42 | ~1898 |
| Marie Lewis | Daughter | — | 20 | ~1920 |
| Claude Lewis | Son | — | 10 | ~1930 |
| John Lewis | Son | — | 13 | ~1927 |
| Thomas Lewis | Son | — | 22 | ~1918 |
Census Appearances
1930
Linn, Iowa
Daughter, age 10
Linn, Iowa · implied b. ~1920 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Linn-County, Iowa
Daughter, age 20
Linn-County, Iowa · implied b. ~1920 — 10 household members
| Surname | Lewis |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fayette Township |
| 1935 Residence (County) | Linn |
| Income (1939) | 0 |
| Highest Grade | C-2 |
| 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 Marie Lewis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marie Lewis
Daughter · 1940 · age 20 · b. ~1920 · Iowa
★ You are viewing this record
Sibling
Claude Lewis
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norman Lewis
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lewis
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loren Lewis
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lewis
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vivian Lewis
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lewis
Sibling · 1940 · age 7
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 — Linn-County, Iowa
Open full size
1940 US Federal Census — Linn-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01175-00244)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marylyn Cremers | 8 | Step daughter | — | Iowa |
| 2 | Beverly Cremers | 5 | Step daughter | — | Iowa |
| 3 | Lloyd Hepher | 43 | Head | Farmer | Iowa |
| 4 | Pauline Hepher | 41 | Wife | — | Iowa |
| 5 | Robert Hepher | 18 | Son | Farm Laborer | Iowa |
| 6 | Dale Hepher | 9 | Son | — | Iowa |
| 7 | Thomas S. Lewis | 74 | Head | — | Iowa |
| 8 | Edith Lewis | 59 | Wife | — | So. Dakota |
| 9 | Arland Lewis | 44 | Head | Farmer | Iowa |
| 10 | Neva Lewis | 42 | Wife | — | Iowa |
| 11 | Thomas Lewis | 22 | Son | Farm Laborer | Iowa |
| 12 | Marie Lewis THIS PERSON | 20 | Daughter | — | Iowa |
| 13 | Loren Lewis | 17 | Son | — | Iowa |
| 14 | Vivian Lewis | 15 | Daughter | — | Iowa |
| 15 | John Lewis | 13 | Son | — | Iowa |
| 16 | Claude Lewis | 10 | Son | — | Iowa |
| 17 | Mary Jane Lewis | 7 | Daughter | — | Iowa |
| 18 | Norman Lewis | 3 | Son | — | Iowa |
| 19 | Frank C. Hulmey | 56 | Head | — | Missouri |
| 20 | Lottie Hulmey | 52 | Wife | — | Iowa |
| 21 | Earl Hulmey | 17 | Son | — | Iowa |
| 22 | Sarah Hulmey | 13 | Daughter | — | Iowa |
| 23 | Everett Hulmey | 11 | Son | — | Iowa |
| 24 | Frank P. Hulmey | 23 | Head | Farmer | Minnesota |
| 25 | J. S. Macarthur | 60 | Head | Farmer | Iowa |
| 26 | Sarah Macarthur | 57 | Wife | — | Iowa |
| 27 | Vergil Macarthur | 20 | Son | — | Iowa |
| 28 | Ellie Jean Macarthur | 17 | Daughter | — | Iowa |
| 29 | Max S. Ashlock | 24 | Head | Farmer | Iowa |
| 30 | Eleanor Ashlock | 21 | Wife | — | Iowa |
| 31 | Keith Ashlock | 1 | Son | — | Iowa |
| 32 | Harley Burt | 28 | Head | Farm Laborer | Iowa |
| 33 | Edith Burt | 28 | Wife | — | Illinois |
| 34 | Henry Burt | 8 | Son | — | Iowa |
| 35 | Melvin Burt | 4 | Son | — | Iowa |
| 36 | Ralph Little | 38 | Head | Farmer | Iowa |
| 37 | Ruth A. Little | 42 | Wife | — | Iowa |
| 38 | Glenn Little | 17 | Son | — | Wisconsin |
| 39 | Naomi Little | 16 | Daughter | — | Wisconsin |
| 40 | George Little | 15 | Son | — | Wisconsin |
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)