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Mary Lowery — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Lowery across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 6-person household.
Age 28
b. ~1912
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Lowery |
| Given Name | Mary G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Detective Agency |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Bookkeeper |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1912 |
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 |
|---|---|---|---|---|
| Roberta Lowery | Daughter | — | 19 | ~1921 |
| Julia Lowery | Daughter | — | 23 | ~1917 |
| Rita Lowery | Daughter | — | 21 | ~1919 |
| Mary Lowery | Daughter | — | 28 | ~1912 |
| Charles Lowery | Head | — | 62 | ~1878 |
| Julia Lowery | Spouse | — | 58 | ~1882 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 17
Allegheny, Pennsylvania · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lowery |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Clerk |
| Industry | Department Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 28
Allegheny-County, Pennsylvania · implied b. ~1912 — 6 household members
| Surname | Lowery |
| Given Name | Mary G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Bookkeeper |
| Industry | Detective Agency |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Lowery across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lowery
Daughter · 1940 · age 28 · b. ~1912 · Pennsylvania
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Sibling
Roberta Lowery
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Lowery
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Lowery
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
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
35 people indexed on this census page (nara:1940:m-t0627-03653-00720)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 2 | Santo Pirridelli | 52 | Head | Janitor | Italy |
| 3 | Rose Pirridelli | 44 | Wife | — | Italy |
| 4 | Nicholas Pirridelli | 22 | Son | Bus Marker | Italy |
| 5 | Russell L. Hackett | 26 | Head | Service Man | Pennsylvania |
| 6 | Constance Hackett | 23 | Wife | — | Oregon |
| 7 | Russell L. Jr. Hackett | 3 | Son | — | Pennsylvania |
| 8 | Charles H. Lowery | 62 | Head | Stationary Engineer | Pennsylvania |
| 9 | Julia Lowery | 58 | Wife | — | Pennsylvania |
| 10 | Mary G. Lowery THIS PERSON | 28 | Daughter | Bookkeeper | Pennsylvania |
| 11 | Julia E. Lowery | 23 | Daughter | Salesgirl | Pennsylvania |
| 12 | Rita Lowery | 21 | Daughter | — | Pennsylvania |
| 13 | Roberta Lowery | 19 | Daughter | — | Pennsylvania |
| 14 | Walter E. Brown | 57 | Head | Mail Carrier | Pennsylvania |
| 15 | Oliver L. Brown | 52 | Brother | Pipe Fitter | Pennsylvania |
| 16 | Della M. Brown | 47 | Sister | — | Pennsylvania |
| 17 | Mae I. Greery | Greeny | 62 | Head | Maid | Pennsylvania |
| 18 | Alice Greery | Greeny | 35 | Daughter | — | Pennsylvania |
| 19 | Dorothy Greery | Greeny | 31 | Daughter | Office Clerk | Pennsylvania |
| 20 | James Greery | Greeny | 29 | Son | — | Pennsylvania |
| 21 | Leonard Greery | Greeny | 25 | Son | Salesman | Pennsylvania |
| 22 | Henry Wagner | 57 | Lodger | Manager | Pennsylvania |
| 23 | Rollo C. Ditto | 53 | Head | Officer | Pennsylvania |
| 24 | Ray B. Smith | 51 | Head | Welder | Pennsylvania |
| 25 | Effie Smith | 46 | Wife | — | Pennsylvania |
| 26 | Ray B. Smith | 21 | Son | Rigger | Pennsylvania |
| 30 | John Casios | 46 | Head | Waiter | Greece |
| 31 | Grace V. Casios | 40 | Wife | — | W. Virginia |
| 32 | Herbert Burke | 24 | Head | Waiter | Pennsylvania |
| 33 | Loretta Burke | 23 | Wife | — | Pennsylvania |
| 34 | Jo Anne Burke | 4 | Daughter | — | Pennsylvania |
| 35 | Helen Crupinski | 25 | Lodger | Waitress | Pennsylvania |
| 37 | Marie Ferguson | 33 | Head | Maid | Pennsylvania |
| 38 | William Ferguson | 15 | Son | — | Pennsylvania |
| 39 | Elizabeth Ferguson | 11 | Daughter | — | Pennsylvania |
| 40 | Ann Maria Ferguson | 9 | 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)