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Mary Baird — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Mary Baird across the 1900, 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1845), then head of a 3-person household.
Age 55
b. ~1845
Female
Spouse
Born: Ireland
Married
1900 Census Record Details
| Census Year | 1900 |
| Location | Allegheny, Pennsylvania |
| Surname | Baird |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Oct |
| Birth Year | 1845 |
| Year of Immigration | 1884 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Wilkinsburg Borough |
| Est. Birth Year | ~1845 |
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.
3 people recorded at the same address in the 1900 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Moses Baird | Head | — | 71 | ~1829 |
| Annie Baird | Daughter | — | 32 | ~1868 |
| Mary Baird | Spouse | — | 55 | ~1845 |
Census Appearances
1900
Allegheny, Pennsylvania
Spouse, age 55
Allegheny, Pennsylvania · implied b. ~1845 — 3 household members
| Surname | Baird |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Oct |
| Birth Year | 1845 |
| Year of Immigration | 1884 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Allegheny, Pennsylvania
Spouse, age 67
Allegheny, Pennsylvania · implied b. ~1843 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baird |
| Given Name | Margaret A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 41 |
| Children Born | 7 |
| Children Living | 3 |
| Year of Immigration | 1849 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Allegheny, Pennsylvania
Other, age 77
Allegheny, Pennsylvania · implied b. ~1843 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baird |
| Given Name | Margaret |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1849 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1853 |
| Birthplace (normalized) | ireland |
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 3 US Census years (1900, 1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
Mary Baird
Spouse · 1900 · age 55 · b. ~1845 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1900 US Federal Census — Allegheny, Pennsylvania
Open full size
1900 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1900:12thcensusofpopu1372unit:0196)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Shilling | 42 | Wife | — | Pennsylvania |
| 2 | Joseph H Shilling | 18 | Son | Armature Winder | Pennsylvania |
| 3 | Franklin Shilling | 16 | Son | At School | Pennsylvania |
| 4 | Charles Winder | 35 | Head | Moulder Iron | West Virginia |
| 5 | Minnie L Winder | 35 | Wife | — | Pennsylvania |
| 6 | Grace H Winder | 6 | Daughter | At School | Pennsylvania |
| 7 | Jesse R Stimmell | 18 | Boarder | Core Maker (Brass) | Pennsylvania |
| 8 | Joseph Stump | 27 | Head | Butcher | Pennsylvania |
| 9 | Bridgett Stump | 30 | Wife | — | Pennsylvania |
| 10 | Florence M Stump | 2 | Daughter | — | Pennsylvania |
| 11 | Grace E Stump | 0 | Daughter | — | Pennsylvania |
| 12 | Moses Baird | 70 | Head | — | Ireland |
| 13 | Mary Baird THIS PERSON | 54 | Wife | — | Ireland |
| 14 | Annie Baird | 31 | Daughter | Dress Maker | Ireland |
| 15 | William H Mcclarey | 29 | Head | Time Keeper (Rail Road) | Pennsylvania |
| 16 | Miletta Mcclarey | 25 | Wife | — | Pennsylvania |
| 17 | George Mcclarey | 5 | Son | — | Ohio |
| 18 | Elizabeth Mcclarey | 4 | Daughter | — | Pennsylvania |
| 19 | Helen Mcclarey | 2 | Daughter | — | Pennsylvania |
| 20 | Harry Bishop | 31 | Head | Brick Layer | Pennsylvania |
| 21 | Tillie Bishop | 27 | Wife | — | England |
| 22 | Harry Bishop | 5 | Son | — | Pennsylvania |
| 23 | Frederick Bishop | 3 | Son | — | Pennsylvania |
| 24 | Florence Bishop | 0 | Daughter | — | Pennsylvania |
| 25 | Harry A Cox | 32 | Head | Painter | Pennsylvania |
| 26 | Nettie M Cox | 30 | Wife | — | Ohio |
| 27 | Olive E Cox | 9 | Daughter | — | Pennsylvania |
| 28 | Frank Cox | 7 | Son | — | Pennsylvania |
| 29 | Frederick Cox | 4 | Son | — | Pennsylvania |
| 30 | Stanley Cox | 2 | Son | — | Pennsylvania |
| 31 | William W Sleppy | 32 | Head | Commercial Traveler (Candy) | Pennsylvania |
| 32 | Anni K Sleppy | 26 | Wife | — | Pennsylvania |
| 33 | Ralph E Sleppy | 3 | Son | — | Pennsylvania |
| 34 | Gladys M Sleppy | 1 | Daughter | — | Pennsylvania |
| 35 | Jeremiah M John | 52 | Head | Carpenter | Pennsylvania |
| 36 | Harriett John | 51 | Wife | — | Pennsylvania |
| 37 | Maurice John | 28 | Son | Printer | Pennsylvania |
| 38 | Lillian John | 24 | Daughter | School Teacher | Pennsylvania |
| 39 | Jeremiah W John | 15 | Son | At School | Pennsylvania |
| 40 | Arthur S Struat | 37 | Head | Landlord | Pennsylvania |
| 41 | Katherine Struat | 68 | Wife | — | Ireland |
| 42 | Margaret Struat | 30 | Niece | — | Pennsylvania |
| 43 | Marie L Messager | 53 | Head | — | West Virginia |
| 44 | Marie Messager | 86 | Mother | — | Pennsylvania |
| 45 | William Thompson | 65 | Brother-in-law | Minister | Ireland |
| 46 | Gertrude Thompson | 58 | Sister | — | West Virginia |
| 47 | William S Stokes | 32 | Head | Dentist | Ohio |
| 48 | Mary Stokes | 33 | Wife | — | Pennsylvania |
| 49 | Sarah M Stokes | 13 | Daughter | At School | Pennsylvania |
| 50 | John E Costillo | 31 | Head | Laborer (Switchboard) | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1900 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)