MS
Mary Shaw — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Shaw across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Emma — first a spouse (b.~1883), then head of a 4-person household.
Age 57
b. ~1883
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Shaw |
| Given Name | Mary C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Swissvale Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | H 3 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Swissvale Borough |
| Est. Birth Year | ~1883 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Sarah Shaw | Daughter | — | 19 | ~1921 |
| Lloyd Shaw | Head | — | 64 | ~1876 |
| Lloyd Shaw | Son | — | 24 | ~1916 |
| Mary Shaw | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 40
Allegheny, Pennsylvania · implied b. ~1880 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaw |
| Given Name | Margie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Penna. |
| Mother's Birthplace | Penna. |
| Occupation | Milliner |
| Industry | Millinery Store |
| Class of Worker | S |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Allegheny, Pennsylvania
Other, age 49
Allegheny, Pennsylvania · implied b. ~1881 — 27 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaw |
| Given Name | Margie |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Milliner |
| Industry | Millinery Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Allegheny-County, Pennsylvania
Spouse, age 57
Allegheny-County, Pennsylvania · implied b. ~1883 — 4 household members
| Surname | Shaw |
| Given Name | Mary C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Swissvale Borough |
| 1935 Residence (County) | Allegheny |
| Highest Grade | H 3 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Shaw across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Emma Shaw (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Emma Shaw
b. ~1851
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Shaw
Spouse · 1940 · age 57 · b. ~1883 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03418-00675)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Klumans | 12 | Son | — | Pennsylvania |
| 2 | Emma Riley | 73 | Boarder | — | Pennsylvania |
| 3 | Elizabeth Whitley | 61 | Roomer | — | Pennsylvania |
| 4 | Anthony Crater | 38 | Head | Foreman | Pennsylvania |
| 5 | Elizabeth Crater | 22 | Sister | Mail Delivery | Pennsylvania |
| 6 | Joseph Beymer | 42 | Head | Mail Delivery | Pennsylvania |
| 7 | Anna Beymer | 39 | Wife | — | Pennsylvania |
| 8 | Annamae Beymer | 13 | Daughter | — | Pennsylvania |
| 9 | Eileen Beymer | 8 | Daughter | — | Pennsylvania |
| 10 | Martin Ridge | 64 | Father-in-law | — | Ireland |
| 11 | Daniel Ridge | 30 | Brother-in-law | Clerk | Pennsylvania |
| 12 | Marie Mcdonough | 71 | Head | — | New York |
| 13 | John Mcdonough | 46 | Son | Time Keeper | Pennsylvania |
| 14 | Edward Mcdonough | 43 | Son | Police Officer | Pennsylvania |
| 15 | Anna E. Mcdonough | 38 | Daughter | — | Pennsylvania |
| 16 | Edward Jr. Mcdonough | 8 | Grandson | — | Pennsylvania |
| 17 | Lloyd E. Shaw | 64 | Head | Clerical Worker | West Virginia |
| 18 | Mary C. Shaw THIS PERSON | 57 | Wife | — | Maryland |
| 19 | Lloyd E. Jr. Shaw | 24 | Son | Clerical Worker | Pennsylvania |
| 20 | Sarah J. Shaw | 19 | Daughter | Saleslady | Pennsylvania |
| 21 | Joseph Kelly | 58 | Head | Conductor | Ireland |
| 22 | Sarah Kelly | 57 | Wife | — | Ireland |
| 23 | James Kelly | 23 | Son | Laborer | Pennsylvania |
| 24 | Joseph C. Kelly | 15 | Daughter | — | Pennsylvania |
| 25 | John Kelly | 27 | Son | Mechanic | Pennsylvania |
| 26 | Robert Kelly | 4 | Grandson | — | Pennsylvania |
| 27 | Patrick Mcnicholas | 47 | Head | Laborer | Ireland |
| 28 | Delia Mcnicholas | 49 | Wife | — | Ireland |
| 29 | James H. Mcnicholas | 22 | Son | Apprentice | Pennsylvania |
| 30 | Charles Dugan | 40 | Head | Millwright | Ireland |
| 31 | Ellen Dugan | 39 | Wife | — | Ireland |
| 32 | Anne Dugan | 5 | Daughter | — | Pennsylvania |
| 33 | Charles Jr. Dugan | 3 | Son | — | Pennsylvania |
| 34 | Albert Baker | 34 | Head | Appraiser | Pennsylvania |
| 35 | Alice M. Baker | 27 | Wife | — | Pennsylvania |
| 36 | Albert B. Jr. Baker | 3 | Son | — | Pennsylvania |
| 37 | James R. Baker | 1 | Son | — | Pennsylvania |
| 38 | Martha Baker | 50 | Mother | — | Germany |
| 39 | Christine May White | 19 | Maid | Maid | Pennsylvania |
| 40 | Arthur H. Anderson | 42 | Head | Inspector | Pennsylvania |
Pedigree Summary
Mary
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)