MC
Mary Curtis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Aitkin-County, Minnesota
Our Model Tree links this Mary Curtis across the 1930 and 1940 US Censuses in Aitkin-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 13-person household.
Age 10
b. ~1930
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Aitkin-County, Minnesota |
| Surname | Curtis |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Idun Twp |
| 1935 Residence (County) | Aitkin |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Idun Twp |
| Est. Birth Year | ~1930 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lillie Curtis | Daughter | — | 14 | ~1926 |
| Mary Curtis | Daughter | — | 10 | ~1930 |
| Laura Curtis | Daughter | — | 17 | ~1923 |
| Donna Curtis | Daughter | — | 8 | ~1932 |
| Arthur Curtis | Head | — | 58 | ~1882 |
| Gordon Curtis | Son | — | 12 | ~1928 |
| Chester Curtis | Son | — | 22 | ~1918 |
| Harry Curtis | Son | — | 20 | ~1920 |
| Milford Curtis | Son | — | 19 | ~1921 |
| Harold Curtis | Son | — | 23 | ~1917 |
| Mitchel Curtis | Son | — | 15 | ~1925 |
| Richard Curtis | Son | — | 2 | ~1938 |
| Amy Curtis | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Aitkin, Minnesota
Daughter, age
Aitkin, Minnesota · implied b. ~1930 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Nebraska |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Aitkin-County, Minnesota
Daughter, age 10
Aitkin-County, Minnesota · implied b. ~1930 — 13 household members
| Surname | Curtis |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Idun Twp |
| 1935 Residence (County) | Aitkin |
| Highest Grade | 5 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 10 · b. ~1930 · Minnesota
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Sibling
Lillie Curtis
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gordon Curtis
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donna Curtis
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Curtis
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Curtis
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Curtis
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Milford Curtis
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Chester Curtis
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Curtis
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mitchel Curtis
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 — Aitkin-County, Minnesota
Open full size
1940 US Federal Census — Aitkin-County, Minnesota
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-01903-00276)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur Anderson | 45 | Head | Farmer | Minnesota |
| 2 | Rosetta Anderson | 34 | wife | — | Minnesota |
| 3 | Mae Donna Anderson | 11 | daughter | — | Minnesota |
| 4 | Phyllis Anderson | 7 | daughter | — | Minnesota |
| 5 | John Arthur Anderson | 0 | son | — | Minnesota |
| 6 | Amanda Peterson | 74 | lodger | None | Sweden |
| 7 | Arthur P. Curtis | 58 | Head | Farmer | Michigan |
| 8 | Amy Curtis | 48 | wife | — | Nebraska |
| 9 | Harold Curtis | 23 | son | 78 | Minnesota |
| 10 | Chester A. Curtis | 22 | son | Farm Labor | Minnesota |
| 11 | Harry Curtis | 20 | son | Farm Labor | Minnesota |
| 12 | Milford Curtis | 19 | son | 79 | Minnesota |
| 13 | Laura Curtis | 17 | daughter | — | Minnesota |
| 14 | Mitchel Curtis | 15 | son | — | Minnesota |
| 15 | Lillie Curtis | 14 | daughter | — | Minnesota |
| 16 | Gordon Curtis | 12 | son | — | Minnesota |
| 17 | Mary Curtis THIS PERSON | 10 | daughter | — | Minnesota |
| 18 | Donna Mae Curtis | 8 | daughter | — | Minnesota |
| 19 | Richard Curtis | 2 | son | — | Minnesota |
| 20 | Ernest Nelson | 40 | Head | Farmer | Minnesota |
| 21 | Ivey Nelson | 33 | wife | — | Minnesota |
| 22 | Shirley Nelson | 12 | daughter | — | Wisconsin |
| 23 | William Nelson | 9 | son | — | Wisconsin |
| 24 | Helen Nelson | 6 | daughter | — | Minnesota |
| 25 | Carl A. Johnson | 76 | Head | — | Norway |
| 26 | Bertha Johnson | 68 | wife | — | Norway |
| 27 | Mabel Johnson | 23 | daughter | — | Minnesota |
| 28 | Hans O. Johnson | 44 | Head | Farmer | Minnesota |
| 29 | Martha Johnson | 43 | wife | — | Minnesota |
| 30 | Cornelius L. Bates | 51 | Head | Farmer | So Dakota |
| 31 | Alonett Bates | 38 | wife | — | Pennsylvania |
| 32 | Melvin C. Bates | 27 | son | Farm Labor | So Dakota |
| 33 | Joseph A. Slette | 47 | Head | Farmer | Minnesota |
| 34 | James Bennett | 64 | Head | Farmer | Iowa |
| 35 | Elina Johnson | 77 | Head | — | Norway |
| 36 | — | 52 | — | — | Norway |
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)