WB
William Baird — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Yellowstone-County, Montana
Our Model Tree links this William Baird across the 1930 and 1940 US Censuses in Yellowstone-County, Montana (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 6-person household.
Age 55
b. ~1885
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Yellowstone-County, Montana |
| Surname | Baird |
| Given Name | William A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Broadview Town |
| 1935 Residence (County) | Yellowstone |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 56 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Broadview Town |
| Est. Birth Year | ~1885 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Arthur Baird | Son | — | 25 | ~1915 |
| Mildred Baird | Daughter | — | 18 | ~1922 |
| Willard Baird | Son | — | 14 | ~1926 |
| Stella Baird | Daughter | — | 16 | ~1924 |
| Lellia Baird | Spouse | — | 46 | ~1894 |
| William Baird | Head | — | 55 | ~1885 |
Census Appearances
1930
Yellowstone, Montana
Head, age 45
Yellowstone, Montana · implied b. ~1885 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baird |
| Given Name | William A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 29 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | New York |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1200 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Yellowstone-County, Montana
Head, age 55
Yellowstone-County, Montana · implied b. ~1885 — 6 household members
| Surname | Baird |
| Given Name | William A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Broadview Town |
| 1935 Residence (County) | Yellowstone |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 56 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 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 William Baird across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Baird
Head · 1940 · age 55 · b. ~1885 · Montana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Yellowstone-County, Montana
Open full size
1940 US Federal Census — Yellowstone-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02234-00999)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | J. Percy Swartz | 57 | Head | Farmer | Missouri |
| 2 | Lottie Swartz | 54 | Wife | — | Iowa |
| 3 | P. Dale Swartz | 20 | Son | Labor | Montana |
| 4 | Dorothy D. Swartz | 18 | Daughter | — | Montana |
| 5 | Gordon R. Swartz | 9 | Son | — | Montana |
| 6 | William A. Baird THIS PERSON | 55 | Head | Farmer | Illinois |
| 7 | Lellia M. Baird | 46 | Wife | — | Illinois |
| 8 | Arthur R. Baird | 25 | Son | Mechanic | Illinois |
| 9 | Mildred A. Baird | 18 | Daughter | — | Montana |
| 10 | Stella May Baird | 16 | Daughter | — | Montana |
| 11 | Willard G. Baird | 14 | Son | — | Montana |
| 12 | Sam J. Dickey | 42 | Head | Truck Driver | Mississippi |
| 13 | Violet Dorothy Dickey | 26 | Wife | — | Montana |
| 14 | Violet L. Dickey | 9 | Daughter | — | Montana |
| 15 | Sidney W. Dickey | 8 | Son | — | Montana |
| 16 | Earl Jr. Dickey | 6 | Son | — | Montana |
| 17 | Florence M. Dickey | 4 | Daughter | — | Montana |
| 18 | Helen I. Dickey | 3 | Daughter | — | Montana |
| 19 | Bert Davids | 43 | Head | Dealer | Iowa |
| 20 | Ocean M. Davids | 41 | Wife | Clerk | Iowa |
| 21 | Ray H. Davids | 18 | Son | — | Montana |
| 22 | John Jansma | 47 | Head | Mail Carrier | Iowa |
| 23 | Jennie Jansma | 36 | Wife | — | Iowa |
| 24 | Dean Jansma | 11 | Son | — | Montana |
| 25 | Anita K. Jansma | 0 | Daughter | — | Montana |
| 26 | Lloyd L. De Witt | 30 | Head | Teacher | Kansas |
| 27 | Lillian De Witt | 26 | Wife | — | Kansas |
| 28 | Georgia Hannant | 62 | Head | — | Iowa |
| 29 | Frank E. Swartz | 78 | Head | — | Illinois |
| 30 | Nancy Ann Swartz | 79 | Wife | — | Indiana |
| 31 | John J. Harding | 61 | Head | Janitor | Nebraska |
| 32 | Amelia Harding | 38 | Wife | — | Iowa |
| 33 | Warren J. Harding | 18 | Son | Labor | Montana |
| 34 | Wayne F. Harding | 15 | Son | Labor | Montana |
| 35 | Beulah L. Harding | 12 | Daughter | — | Montana |
| 36 | Dolores J. Harding | 7 | Daughter | — | Montana |
| 37 | Kenneth J. Hegg | 31 | Head | Proprietor | Wisconsin |
| 38 | Emma Hegg | 29 | Wife | — | Montana |
| 39 | Kenneth Jr. Hegg | 5 | Son | — | Montana |
| 40 | Donald M. Hegg | 2 | Son | — | Montana |
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)