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Mary Bacon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Bacon across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 6-person household.
Age 19
b. ~1921
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Bacon |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Russellton 1-10 |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Russellton 110 |
| Est. Birth Year | ~1921 |
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 |
|---|---|---|---|---|
| Hilda Bacon | Daughter | — | 7 | ~1933 |
| Charles Bacon | Son | — | 22 | ~1918 |
| Susie Bacon | Daughter | — | 15 | ~1925 |
| Still Bacon | Head | — | 41 | ~1899 |
| Mary Bacon | Daughter | — | 19 | ~1921 |
| Elsie Bacon | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 9
Allegheny, Pennsylvania · implied b. ~1921 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bacon |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 19
Allegheny-County, Pennsylvania · implied b. ~1921 — 6 household members
| Surname | Bacon |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Russellton 1-10 |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 6 |
| 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 Bacon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bacon
Daughter · 1940 · age 19 · b. ~1921 · Pennsylvania
★ You are viewing this record
Sibling
Charles Bacon
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Susie Bacon
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elsie Bacon
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hilda Bacon
Sibling · 1940 · age 7
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-t0627-03420-00403)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy Halmicky | 4 | daughter | — | Pennsylvania |
| 42 | Stanley Halmicky | 2 | son | — | Pennsylvania |
| 43 | Orville Solomon | 28 | head | Coal Miner | Pennsylvania |
| 44 | Irene Solomon | 26 | wife | — | Pennsylvania |
| 45 | Edward Solomon | 6 | son | — | Pennsylvania |
| 46 | George Mcmillen | 37 | head | Coal Miner | Pennsylvania |
| 47 | Edith Mcmillen | 41 | wife | — | Pennsylvania |
| 48 | Lawrence Schibert | 32 | head | Coal Miner | Pennsylvania |
| 49 | Sylvia Schibert | 26 | wife | — | Pennsylvania |
| 50 | Sylvia Schibert | 6 | daughter | — | Pennsylvania |
| 51 | Betty Schibert | 5 | daughter | — | Pennsylvania |
| 52 | Marcia Schibert | 2 | daughter | — | Pennsylvania |
| 53 | Joe Marks | 35 | head | Coal Miner | Poland |
| 54 | Mary Marks | 28 | wife | — | Pennsylvania |
| 55 | Adam Marks | 6 | son | — | Pennsylvania |
| 56 | Evelyn Marks | 4 | daughter | — | Pennsylvania |
| 57 | Robert Marks | 1 | daughter | — | Pennsylvania |
| 58 | William Lestak | 48 | lodger | Coal Miner | Poland |
| 59 | Julius Gloddek | 62 | head | Coal Miner | Germany |
| 60 | Wilma Gloddek | 51 | wife | — | Germany |
| 61 | Joe Popovich | 52 | head | — | Austria |
| 62 | Eva Popovich | 48 | wife | — | Austria |
| 63 | Manda Popovich | 19 | daughter | — | Pennsylvania |
| 64 | Frank Popovich | 16 | son | — | Pennsylvania |
| 65 | George Popovich | 11 | son | — | Pennsylvania |
| 66 | George Vukovich | 40 | head | Coal Miner | Austria |
| 67 | Julia Vukovich | 28 | wife | — | Austria |
| 68 | George Vukovich | 5 | son | — | Pennsylvania |
| 69 | Frances Vukovich | 2 | daughter | — | Pennsylvania |
| 70 | George Polosky | 28 | head | Coal Miner | Pennsylvania |
| 71 | Helen Polosky | 27 | wife | — | Pennsylvania |
| 72 | Paul Polosky | 2 | son | — | Pennsylvania |
| 73 | Mike Polosky | 1 | son | Coal Miner | Pennsylvania |
| 74 | Still Bacon | 41 | head | Coal Miner | Austria |
| 75 | Charles Bacon | 22 | son | Coal Miner | Pennsylvania |
| 76 | Mary Bacon THIS PERSON | 19 | daughter | — | Pennsylvania |
| 77 | Susie Bacon | 15 | daughter | — | Pennsylvania |
| 78 | Elsie Bacon | 10 | daughter | — | Pennsylvania |
| 79 | Hilda Bacon | 7 | daughter | — | Pennsylvania |
| 80 | Mike Olar | 32 | head | Coal Miner | 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)