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Mary Baird — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Scott-County, Illinois
Our Model Tree links this Mary Baird across the 1930 and 1940 US Censuses in Scott-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Illinois |
| Surname | Baird |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Oxville Precinct |
| 1935 Residence (County) | Scott |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Oxville Precinct |
| Est. Birth Year | ~1929 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Archie Baird | Son | — | 10 | ~1930 |
| Dorothy Baird | Daughter | — | 16 | ~1924 |
| Florine Baird | Daughter | — | 8 | ~1932 |
| Archie Baird | Head | — | 40 | ~1900 |
| Maycle Baird | Daughter | — | 13 | ~1927 |
| Geraldine Baird | Spouse | — | 35 | ~1905 |
| Mary Baird | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Scott, Illinois
Other, age 1
Scott, Illinois · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baird |
| Given Name | Mary L. |
| Relationship to Head | Dau. |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Scott-County, Illinois
Daughter, age 11
Scott-County, Illinois · implied b. ~1929 — 7 household members
| Surname | Baird |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Oxville Precinct |
| 1935 Residence (County) | Scott |
| Highest Grade | No 5 |
| 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 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Florine Baird
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Baird
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maycle Baird
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Archie Baird
Sibling · 1940 · age 10
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 — Scott-County, Illinois
Open full size
1940 US Federal Census — Scott-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00889-00232)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edsie Guerino | 43 | Wife | — | Illinois |
| 2 | Ivan Gregory | 23 | Lodger | Laborer | Illinois |
| 3 | Everett Howell | 21 | Head | Farmer | Illinois |
| 4 | Barbara Howell | 21 | Wife | — | Illinois |
| 5 | Frank Marsh | 34 | Head | Farmer | Illinois |
| 6 | Eileen Marsh | 30 | Wife | — | Illinois |
| 7 | Alvin Marsh | 10 | Son | — | Illinois |
| 8 | Charles Carlton | 73 | Father-in-law | — | Illinois |
| 9 | Louis Carlton | 30 | Brother-in-law | Laborer | Illinois |
| 10 | Herbert Bland | 41 | Head | Farmer | Illinois |
| 11 | Mary Bland | 39 | Wife | — | Illinois |
| 12 | Howard Bland | 21 | Son | Common Labor | Illinois |
| 13 | Marvin Bland | 15 | Son | — | Illinois |
| 14 | Albert Bland | 11 | Son | — | Illinois |
| 15 | Henry Fruesen | 46 | Head | Farmer | Illinois |
| 16 | Louise Fruesen | 40 | Wife | — | Illinois |
| 17 | Ted Jarvis | 38 | Head | Laborer | Illinois |
| 18 | Mary Jarvis | 39 | Wife | — | Illinois |
| 19 | Bernard Jarvis | 19 | Son | Laborer | Illinois |
| 20 | Donald Jarvis | 15 | Son | Laborer | Illinois |
| 21 | Harvey Jarvis | 13 | Son | — | Illinois |
| 22 | Earl Jarvis | 3 | Son | — | Illinois |
| 23 | Oscar Fruesen | 40 | Head | Farmer | Illinois |
| 24 | Opal Fruesen | 40 | Wife | — | Illinois |
| 25 | Oscar Robert Fruesen | 14 | Son | — | Illinois |
| 26 | Leroy Fruesen | 11 | Son | — | Colorado |
| 27 | George E. Cox | 54 | Head | Farmer | Illinois |
| 28 | Clyde Cox | 20 | Brother | Laborer | Illinois |
| 29 | Norma Cox | 18 | Sister-in-law | — | Illinois |
| 30 | Joe Six | 66 | Head | Farmer | Illinois |
| 31 | Venia Gilman | 39 | Partner | Farmer | Illinois |
| 32 | Rowena Gilman | 16 | Partner's daughter | — | Illinois |
| 33 | Ronald Gilman | 9 | Partner's son | — | Illinois |
| 34 | Archie Baird | 40 | Head | Paper Hanger | Illinois |
| 35 | Geraldine Baird | 35 | Wife | — | Illinois |
| 36 | Dorothy Baird | 16 | Daughter | — | Illinois |
| 37 | Maycle Baird | 13 | Daughter | — | Illinois |
| 38 | Mary Lou Baird THIS PERSON | 11 | Daughter | — | Illinois |
| 39 | Archie Dean Baird | 10 | Son | — | Illinois |
| 40 | Florine Baird | 8 | 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)