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Mary Baird — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Baird across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 6-person household.
Age 42
b. ~1898
Female
Spouse
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Baird |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Verona |
| Naturalization Status | First papers filed |
| Additional Details | |
| Highest Grade | H-4 |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Verona |
| Est. Birth Year | ~1898 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Baird | Spouse | — | 42 | ~1898 |
| James Baird | Head | — | 44 | ~1896 |
| Mary Baird | Daughter | — | 14 | ~1926 |
| James Baird | Son | — | 6 | ~1934 |
| Charles Baird | Son | — | 4 | ~1936 |
| William Baird | Son | — | 11 | ~1929 |
Census Appearances
1930
Allegheny, Pennsylvania
Other, age 32
Allegheny, Pennsylvania · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baird |
| Given Name | Mary B. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Alien |
| Year of Immigration | 1929 |
| Age at First Marriage | 25 |
| Father's Birthplace | England |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Allegheny-County, Pennsylvania
Spouse, age 42
Allegheny-County, Pennsylvania · implied b. ~1898 — 6 household members
| Surname | Baird |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Verona |
| Naturalization Status | First papers filed |
| Highest Grade | H-4 |
| Birth Country | England |
| Birthplace (normalized) | england |
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.
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This person
Anchor record
Mary Baird
Spouse · 1940 · age 42 · b. ~1898 · Pennsylvania
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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 — Allegheny-County, Pennsylvania
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1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03419-00683)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William G. Chaney | 24 | son | Clerk | Pennsylvania |
| 42 | James T. Baird | 44 | Head | Machinist | Scotland |
| 43 | Mary B. Baird THIS PERSON | 42 | Wife | — | England |
| 44 | Mary T. Baird | 14 | daughter | — | Pennsylvania |
| 45 | William Baird | 11 | son | — | Pennsylvania |
| 46 | James T. Jr. Baird | 6 | son | — | Pennsylvania |
| 47 | Charles E. Baird | 4 | son | — | Pennsylvania |
| 48 | Charles Kelly | 43 | Head | Machinist | Pennsylvania |
| 49 | Mary A. Kelly | 39 | Wife | — | Pennsylvania |
| 50 | Mary L. Kelly | 8 | daughter | — | Pennsylvania |
| 51 | Charles Shoop | 40 | Head | Laborer | Pennsylvania |
| 52 | Helen A. Shoop | 30 | Wife | — | Pennsylvania |
| 53 | Helen Shoop | 9 | daughter | — | Pennsylvania |
| 54 | Claire Jane Shoop | 7 | daughter | — | Pennsylvania |
| 55 | William Shoop | 14 | Nephew | — | Pennsylvania |
| 56 | William Conklin | 27 | Head | Stone Dresser | Pennsylvania |
| 57 | Edith A. Conklin | 27 | Wife | — | Pennsylvania |
| 58 | Eleanor E. Conklin | 7 | son | — | Pennsylvania |
| 59 | Clyde H. Conklin | 4 | son | — | Pennsylvania |
| 60 | Frederick D. Conklin | 3 | son | — | Pennsylvania |
| 61 | George Walker | 39 | Head | Craneman | Pennsylvania |
| 62 | Leola A. Walker | 38 | Wife | — | Pennsylvania |
| 63 | William Walker | 15 | son | — | Pennsylvania |
| 64 | Dorothy Walker | 8 | daughter | — | Pennsylvania |
| 65 | Melvin Walker | 2 | son | — | Pennsylvania |
| 66 | William H. Neal | 62 | Father-in-law | Carpenter | Pennsylvania |
| 67 | Daisy Swanson | 60 | Sister-in-law | Housekeeper | Pennsylvania |
| 68 | Sarah A. Bush | 87 | Head | — | Pennsylvania |
| 69 | — | None | — | — | — |
| 70 | Joe Myros | 47 | Head | Heater | Pennsylvania |
| 71 | Laura A. Myros | 51 | Wife | — | Pennsylvania |
| 72 | Charles Myros | 29 | son | Laborer | Pennsylvania |
| 73 | Charles Mckinley | 48 | Head | Policeman | Ireland |
| 74 | Catherine Mckinley | 45 | Wife | — | Ireland |
| 75 | Benjamin Miller | 51 | Head | Machinist Helper | Pennsylvania |
| 76 | Carolynne E. Miller | 49 | Wife | — | Pennsylvania |
| 77 | Charles E. Miller | 26 | son | Clerk | Pennsylvania |
| 78 | Paul Miller | 24 | son | — | Pennsylvania |
| 79 | Helen Miller | 21 | daughter | Operator | Pennsylvania |
| 80 | Eloise Miller | 15 | daughter | — | Pennsylvania |
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)