MC
Mary Curtis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Warren-County, Iowa
Our Model Tree links this Mary Curtis across the 1930 and 1940 US Censuses in Warren-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Iowa |
| Surname | Curtis |
| Given Name | Mary Bell |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Milo |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Lacona Town |
| Est. Birth Year | ~1923 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Alma Curtis | Daughter | — | 11 | ~1929 |
| Lillie Curtis | Daughter | — | 6 | ~1934 |
| Mary Curtis | Daughter | — | 17 | ~1923 |
| Lelia Curtis | Daughter | — | 16 | ~1924 |
| Howard Curtis | Head | — | 40 | ~1900 |
| Pearl Curtis | Son | — | 14 | ~1926 |
| Dean Curtis | Son | — | 2 | ~1938 |
| Annie Curtis | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Warren, Iowa
Daughter, age 7
Warren, Iowa · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | Mary Belle |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Warren-County, Iowa
Daughter, age 17
Warren-County, Iowa · implied b. ~1923 — 8 household members
| Surname | Curtis |
| Given Name | Mary Bell |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Milo |
| 1935 Residence (County) | Warren |
| Highest Grade | Hs 4 |
| 1935 Residence | Iowa |
| 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 Mary Curtis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Curtis
Daughter · 1940 · age 17 · b. ~1923 · Iowa
★ You are viewing this record
Sibling
Lillie Curtis
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dean Curtis
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pearl Curtis
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lelia Curtis
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alma Curtis
Sibling · 1940 · age 11
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 — Warren-County, Iowa
Open full size
1940 US Federal Census — Warren-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01210-00536)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alma L. Butler | 1 | Daughter | — | Iowa |
| 42 | Howard Curtis | 40 | Head | Common Laborer | Iowa |
| 43 | Annie Curtis | 37 | Wife | — | Iowa |
| 44 | Mary Bell Curtis THIS PERSON | 17 | Daughter | — | Iowa |
| 45 | Lelia May Curtis | 16 | Daughter | New Worker | Iowa |
| 46 | Pearl L. Curtis | 14 | Son | — | Iowa |
| 47 | Alma L. Curtis | 11 | Daughter | — | Iowa |
| 48 | Lillie Curtis | 6 | Daughter | — | Iowa |
| 49 | Dean Curtis | 2 | Son | — | Iowa |
| 50 | J. L. Edington | 34 | Head | Blaster | Iowa |
| 51 | Marvel Edington | 31 | Wife | — | Iowa |
| 52 | Irene Edington | 9 | Daughter | — | Iowa |
| 53 | Norman Edington | 7 | Son | — | Iowa |
| 54 | Blaine Edington | 5 | Son | — | Iowa |
| 55 | Doyle Edington | 3 | Son | — | Iowa |
| 56 | James Edington | 2 | Son | — | Iowa |
| 57 | Dennis Edington | 1 | Son | — | Iowa |
| 58 | Lottie Rodgers | 70 | Head | — | Michigan |
| 59 | Albert Silvers | 56 | Head | Black Smith | Germany |
| 60 | Laura Silvers | 46 | Wife | — | Iowa |
| 61 | Alberta Silvers | 16 | Daughter | — | Iowa |
| 62 | Lilian Silvers | 14 | Daughter | — | Iowa |
| 63 | Frank Dittmer | 46 | Head | Common Laborer | Iowa |
| 64 | Mildred Dittmer | 19 | Daughter | Housekeeper | Iowa |
| 65 | Florence Dittmer | 17 | Daughter | New Worker | Iowa |
| 66 | Edna Dittmer | 16 | Daughter | — | Iowa |
| 67 | Louise Dittmer | 14 | Son | — | Iowa |
| 68 | Majary A. Dittmer | 12 | Daughter | — | Iowa |
| 69 | Lolen Dittmer | 10 | Son | — | Iowa |
| 70 | Lloyd Dittmer | 8 | Son | — | Iowa |
| 71 | Joseph Putz | 74 | Head | — | Iowa |
| 72 | Mary M. Putz | 72 | Wife | — | Iowa |
| 73 | Frank B. Daugherty | 52 | Head | General Labor | Iowa |
| 74 | Nora Daugherty | 55 | Wife | — | Iowa |
| 75 | J. W. Cranford | 39 | Head | Janitor | Iowa |
| 76 | George Cranford | 14 | Son | — | Iowa |
| 77 | Marlene Cranford | 2 | Daughter | — | Iowa |
| 78 | Ora Haltom | 65 | Head | — | Iowa |
| 79 | Raymond V. Rodgers | 44 | Head | Mining And Truck Driving | Iowa |
| 80 | Frances Rodgers | 43 | Wife | Telephone Operator | Iowa |
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)