MS
Mary Summers — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Summers across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 11-person household.
Age 12
b. ~1928
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Summers |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1928 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Celeste Summers | Daughter | — | 20 | ~1920 |
| Marcella Summers | Daughter | — | 10 | ~1930 |
| Mary Summers | Daughter | — | 12 | ~1928 |
| Gladys Summers | Daughter | — | 17 | ~1923 |
| James Summers | Head | — | 42 | ~1898 |
| Thomas Harris | Other | — | 36 | ~1904 |
| James Summers | Son | — | 18 | ~1922 |
| Frank Summers | Son | — | 22 | ~1918 |
| Robert Summers | Son | — | 14 | ~1926 |
| Samuel Summers | Son | — | 5 | ~1935 |
| Lallie Summers | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 1
Allegheny, Pennsylvania · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Summers |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Age at First Marriage | 1 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 12
Allegheny-County, Pennsylvania · implied b. ~1928 — 11 household members
| Surname | Summers |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| 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 Summers across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Summers
Daughter · 1940 · age 12 · b. ~1928 · Pennsylvania
★ You are viewing this record
Sibling
Frank Summers
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Summers
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Celeste Summers
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Summers
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Summers
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marcella Summers
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gladys Summers
Sibling · 1940 · age 17
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
40 people indexed on this census page (nara:1940:m-t0627-03673-00888)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roland Harris | 24 | Head | Machinist | Georgia |
| 42 | Arthur Patten | 24 | Head | Machinist | South Carolina |
| 43 | Rozell Patten | 26 | Wife | — | Georgia |
| 44 | Thomas R. Davidson | 58 | Head | Laborer | Pennsylvania |
| 45 | Charles Davidson | 35 | Brother | Laborer | Pennsylvania |
| 46 | James B. Summers | 42 | Head | Laborer | Georgia |
| 47 | Lallie B. Summers | 40 | Wife | — | Georgia |
| 48 | Frank Summers | 22 | Son | Porter | Georgia |
| 49 | Celeste Summers | 20 | Daughter | New Worker | Georgia |
| 50 | James Summers | 18 | Son | — | Georgia |
| 51 | Gladys Summers | 17 | Daughter | — | Georgia |
| 52 | Robert Summers | 14 | Son | — | Georgia |
| 53 | Mary Summers THIS PERSON | 12 | Daughter | — | Pennsylvania |
| 54 | Marcella Summers | 10 | Daughter | — | Pennsylvania |
| 55 | Samuel Summers | 5 | Son | — | Pennsylvania |
| 56 | Thomas M. Harris | 36 | Brother-in-law | Laborer | Georgia |
| 57 | Harriet Dancers | 57 | Head | Homeworker | Georgia |
| 58 | William Cirocco | 54 | Head | Laborer | Italy |
| 59 | Mary Cirocco | 51 | Wife | — | Italy |
| 60 | Daniel Cirocco | 25 | Son | Laborer | Pennsylvania |
| 61 | Catherine Cirocco | 21 | Daughter | Laundress | Pennsylvania |
| 62 | Carmel Cirocco | 19 | Son | Sign Painter | Pennsylvania |
| 63 | Frank Cirocco | 15 | Son | Barber | Pennsylvania |
| 64 | Martha Cirocco | 15 | Daughter | — | Pennsylvania |
| 65 | Joseph Cirocco | 8 | Son | — | Pennsylvania |
| 66 | Frank Morris | 59 | Head | Salesman | Greece |
| 67 | Argyro Morris | 40 | Wife | — | Greece |
| 68 | George Morris | 25 | Son | Advertiser | New Mexico |
| 69 | Mike Morris | 23 | Son | Laborer | New Mexico |
| 70 | Mary Morris | 20 | Daughter | — | Greece |
| 71 | Thomas Morris | 16 | Son | — | Colorado |
| 72 | Christie Morris | 14 | Son | — | Pennsylvania |
| 73 | Stanley Morris | 9 | Son | — | Pennsylvania |
| 74 | Albert E. Grady | 32 | Head | Elevator Operator | Pennsylvania |
| 75 | Mary E. Grady | 28 | Wife | — | Pennsylvania |
| 76 | Albert Jr. Grady | 5 | Son | — | Pennsylvania |
| 77 | Richard Grady | 5 | Son | — | Pennsylvania |
| 78 | Nettie Metz | 60 | Head | — | Pennsylvania |
| 79 | Clayton Metz | 33 | Son | Checker | Pennsylvania |
| 80 | Wallace Metz | 24 | Son | 3Rd Baker | Pennsylvania |
Related Census Records
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)