MW
Mary Willis — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Mary Willis across the 1900 and 1910 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1866), then head of a 7-person household.
Age 34
b. ~1866
Female
Spouse
Born: Virginia
Married
1900 Census Record Details
| Census Year | 1900 |
| Location | Allegheny, Pennsylvania |
| Surname | Willis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Virginia |
| Birth Month | Apr |
| Birth Year | 1866 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Pittsburg City |
| Est. Birth Year | ~1866 |
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 1900 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Hattie Willis | Daughter | — | ~1900 | |
| Josephine Willis | Daughter | — | 6 | ~1894 |
| Mollie Willis | Daughter | — | 9 | ~1891 |
| Almeta Willis | Daughter | — | 8 | ~1892 |
| Alfred Willis | Head | — | 41 | ~1859 |
| Harry Willis | Son | — | 3 | ~1897 |
| Mary Willis | Spouse | — | 34 | ~1866 |
Census Appearances
1900
Allegheny, Pennsylvania
Spouse, age 34
Allegheny, Pennsylvania · implied b. ~1866 — 7 household members
| Surname | Willis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Virginia |
| Birth Month | Apr |
| Birth Year | 1866 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1910
Allegheny, Pennsylvania
Spouse, age 42
Allegheny, Pennsylvania · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Virginia |
| Years Married | 20 |
| Children Born | 2 |
| Children Living | 1 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 Willis across 2 US Census years (1900 and 1910) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Willis
Spouse · 1900 · age 34 · b. ~1866 · Pennsylvania
★ You are viewing this record
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:1900:12thcensusofpopu1359unit:0653)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herman Hatting | 46 | Head | Day Laborer | Germany |
| 2 | Sophia A Hatting | 38 | Wife | — | Germany |
| 3 | Tillie C Hatting | 14 | Daughter | At School | Pennsylvania |
| 4 | Henry G Hatting | 12 | Son | At School | Pennsylvania |
| 5 | Wm H Hatting | 10 | Son | At School | Pennsylvania |
| 6 | Bertha W Hatting | 1 | Daughter | — | Pennsylvania |
| 7 | George Hatting | 45 | Brother | Laborer Iron Mill | Germany |
| 8 | James B Leo | 51 | Head | Stationary Engineer | Pennsylvania |
| 9 | Sarah E Leo | 49 | Wife | — | England |
| 10 | Wm H Leo | 23 | Son | Day Laborer | Pennsylvania |
| 11 | John V Leo | 20 | Son | Day Laborer | Pennsylvania |
| 12 | Charles J Leo | 18 | Son | Day Laborer | Pennsylvania |
| 13 | Mary A Leo | 16 | Daughter | At School | Pennsylvania |
| 14 | Annie R Leo | 14 | Daughter | At School | Pennsylvania |
| 15 | Earl F Leo | 13 | Son | At School | Pennsylvania |
| 16 | Beatrice R Leo | 9 | Daughter | At School | Pennsylvania |
| 17 | Mary A Simpson | 64 | Sister-in-law | — | England |
| 18 | Frederick H Brown | 49 | Head | Day Laborer | Virginia |
| 19 | Julia Johnston | 75 | Mother | — | Virginia |
| 20 | William R Brown | 38 | Boarder | Day Laborer | Virginia |
| 21 | William E Pressley | 37 | Head | Plasterer | Virginia |
| 22 | Mary E Pressley | 24 | Wife | — | Virginia |
| 23 | Alfred Willis | 40 | Head | Day Laborer | Virginia |
| 24 | Mary Willis THIS PERSON | 34 | Wife | — | Virginia |
| 25 | Mollie Willis | 9 | Daughter | At School | Pennsylvania |
| 26 | Almeta Willis | 7 | Daughter | At School | Pennsylvania |
| 27 | Josephine Willis | 5 | Daughter | — | Pennsylvania |
| 28 | Harry Willis | 3 | Son | — | Pennsylvania |
| 29 | Hattie Willis | 0 | Daughter | — | Pennsylvania |
| 30 | George H Newman | 35 | Head | Day Laborer | Virginia |
| 31 | Fannie Newman | 33 | Wife | — | Virginia |
| 32 | George E Newman | 8 | Son | At School | Pennsylvania |
| 33 | Walter C Newman | 5 | Son | At School | Pennsylvania |
| 34 | Jessie A Newman | 10 | Daughter | At School | Pennsylvania |
| 35 | Robert Johnston | 31 | Head | Laundress | Virginia |
| 36 | Wilson Brown | 27 | Boarder | Day Laborer | Virginia |
| 37 | William Aldridge | 32 | Head | Day Laborer | Isle of Jersey |
| 38 | Julia Aldridge | 32 | Wife | — | England |
| 39 | John Aldridge | 7 | Son | At School | Pennsylvania |
| 40 | Eleonora Aldridge | 5 | Daughter | — | Missouri |
| 41 | Mary V Aldridge | 3 | Daughter | — | Pennsylvania |
| 42 | Joseph W Aldridge | 1 | Son | — | Pennsylvania |
| 43 | Charles Squire | 35 | Head | Day Laborer | Pennsylvania |
| 44 | Martha Squire | 35 | Wife | — | Pennsylvania |
| 45 | Charles Graham | 21 | Step Son | Day Laborer | Pennsylvania |
| 46 | Frank Graham | 20 | Step Son | Day Laborer | Pennsylvania |
| 47 | Parker Squire | 13 | Son | At School | Pennsylvania |
| 48 | Archie Squire | 11 | Son | At School | Pennsylvania |
| 49 | George Squire | 9 | Son | At School | Pennsylvania |
| 50 | Laura Squire | 6 | Daughter | At School | 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)