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Mary Baird — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hancock-County, Illinois
Our Model Tree links this Mary Baird across the 1930 and 1940 US Censuses in Hancock-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 4-person household.
Age 17
b. ~1923
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hancock-County, Illinois |
| Surname | Baird |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Carthage City |
| 1935 Residence (County) | Hancock |
| Additional Details | |
| Occupation | Student |
| Class of Worker | S |
| Hours Worked | 5 |
| Income (1939) | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Student |
| Township / Ward | Carthage City |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bessie Baird | Spouse | — | 53 | ~1887 |
| James Baird | Head | — | 55 | ~1885 |
| James Baird | Son | — | 21 | ~1919 |
| Mary Baird | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Hancock, Illinois
Daughter, age 7
Hancock, Illinois · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baird |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Hancock-County, Illinois
Daughter, age 17
Hancock-County, Illinois · implied b. ~1923 — 4 household members
| Surname | Baird |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Carthage City |
| 1935 Residence (County) | Hancock |
| Occupation | Student |
| Class of Worker | S |
| Hours Worked | 5 |
| Income (1939) | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Baird across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Baird
Daughter · 1940 · age 17 · b. ~1923 · Illinois
★ You are viewing this record
Sibling
James Baird
Sibling · 1940 · age 21
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 — Hancock-County, Illinois
Open full size
1940 US Federal Census — Hancock-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00810-00103)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louis Arvin | 36 | Head | Lawyer | Illinois |
| 2 | Laurine Arvin | 35 | Wife | — | Illinois |
| 3 | Leanne Arvin | 7 | Daughter | — | Illinois |
| 4 | Robert Louis Arvin | 4 | Son | — | Illinois |
| 5 | James D Baird | 55 | Head | Lawyer | Illinois |
| 6 | Bessie Baird | 53 | Wife | — | Illinois |
| 7 | James Baird | 21 | Son | Student | Illinois |
| 8 | Mary Baird THIS PERSON | 17 | Daughter | Student | Illinois |
| 9 | Mattie Helmick | 72 | Head | — | Illinois |
| 10 | Stella Mcdermott | 48 | Head | — | Illinois |
| 11 | Charles Galloway | 31 | Lodger | Waiter | Illinois |
| 12 | Jane D Miller | 79 | Head | — | Illinois |
| 13 | George Behrens | 67 | Head | Janitor | Illinois |
| 14 | Anna Behrens | 65 | Wife | — | Germany |
| 15 | Neil Brittain | 46 | Head | Druggist | Illinois |
| 16 | Helen A Brittain | 29 | Wife | — | Missouri |
| 17 | Claude Brittain | 5 | Son | — | Illinois |
| 18 | Verne Brittain | 3 | Son | — | Illinois |
| 19 | Elizabeth Brittain | 1 | Daughter | — | Illinois |
| 20 | L. Phil Brittain | 0 | Daughter | — | Illinois |
| 21 | Homer Patterson | 52 | Head | Common Labor | Illinois |
| 22 | Emma Patterson | 44 | Wife | — | Illinois |
| 23 | Fred Goldenstein | 50 | Head | General Salesman | Illinois |
| 24 | Matilda Goldenstein | 46 | Wife | — | Illinois |
| 25 | Leona Goldenstein | 26 | Daughter | — | Illinois |
| 26 | Helen Goldenstein | 24 | Daughter | Printer | Illinois |
| 27 | Paul Goldenstein | 21 | Son | General Farm Work | Illinois |
| 28 | June Goldenstein | 9 | Daughter | — | Illinois |
| 29 | Edward Clark | 40 | Head | Packing Food | California |
| 30 | Edith D Clark | 26 | Wife | — | Illinois |
| 31 | Deloris Clark | 9 | Daughter | — | Illinois |
| 32 | Charles Clark | 4 | Daughter | — | Illinois |
| 33 | Charles Clark | 2 | Son | — | Illinois |
| 34 | Juanita Clark | 0 | Daughter | — | Illinois |
| 35 | Ashley Otting|Otting | 32 | Head | Mauler | Iowa |
| 36 | Lucille Otting|Otting | 34 | Wife | — | Illinois |
| 37 | Harlan Saxon | 54 | Head | Laborer | Indiana |
| 38 | Luise Saxon | 41 | Wife | — | Illinois |
| 39 | Elsie Marie Saxon | 7 | Daughter | — | Illinois |
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)