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Dorothy Long — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Dorothy Long across the 1910, 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Albert & James — first a daughter (b.~1909), then head of a 7-person household.
Age 31
b. ~1909
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Long |
| Given Name | Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | McKeesport |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | bookkeeper |
| Industry | bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 210 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Bookkeeper |
| Township / Ward | Mckeesport |
| Est. Birth Year | ~1909 |
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 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Long | Daughter | — | 31 | ~1909 |
| Robert Long | Son | — | 28 | ~1912 |
| Donald Long | Son | — | 24 | ~1916 |
| Grace Long | Daughter | — | 39 | ~1901 |
| Christine Long | Daughter | — | 35 | ~1905 |
| Dorothy Long | Other | — | 22 | ~1918 |
| Elizabeth Long | Head | — | 65 | ~1875 |
Census Appearances
1910
Allegheny, Pennsylvania
Daughter, age 3
Allegheny, Pennsylvania · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Dorothy G |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Daughter, age 12
Allegheny, Pennsylvania · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Dorothy M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 21
Allegheny, Pennsylvania · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | stenographer |
| Industry | at office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 31
Allegheny-County, Pennsylvania · implied b. ~1909 — 7 household members
| Surname | Long |
| Given Name | Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | McKeesport |
| 1935 Residence (County) | Allegheny |
| Occupation | bookkeeper |
| Industry | bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 210 |
| Highest Grade | Hs 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 Dorothy Long across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Long (~0.92 confidence) and father James Long (~0.92 confidence) and father Thomas Long (~0.92 confidence) and mother Elizabeth Long (~0.92 confidence) and mother Emma Long (~0.92 confidence) and mother Sarah Long (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Long
b. ~1878
Source father
● Household
· direct · ~0.92
Father
James Long
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Thomas Long
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Long
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Emma Long
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Sarah Long
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Long
Daughter · 1940 · age 31 · b. ~1909 · Pennsylvania
★ You are viewing this record
Sibling
Grace Long
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Long
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Long
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christine Long
Sibling · 1940 · age 35
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-t0627-03409-00757)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Evelia Medve | 29 | wife | — | Pennsylvania |
| 42 | John Medve | 26 | head | Billet Roller | Pennsylvania |
| 43 | Caroline Medve | 30 | wife | — | Yugoslavia |
| 44 | Genevieve Medve | 12 | daughter | — | Pennsylvania |
| 45 | Madeline Medve | 11 | daughter | — | Pennsylvania |
| 46 | Richard Medve | 4 | son | — | Pennsylvania |
| 47 | Michael Pazur | 25 | head | Tractor Operator | Pennsylvania |
| 48 | Mary Pazur | 23 | wife | — | Pennsylvania |
| 49 | Marion Pazur | 1 | daughter | — | Pennsylvania |
| 50 | George Breletic | 40 | head | Truck Driver | Pennsylvania |
| 51 | Mary Breletic | 31 | wife | — | Pennsylvania |
| 52 | Robert Breletic | 12 | son | — | Pennsylvania |
| 53 | Betty Breletic | 10 | daughter | — | Pennsylvania |
| 54 | Andrew Babyak | 39 | head | Pipe Cutter | Pennsylvania |
| 55 | Caroline Babyak | 32 | wife | — | Pennsylvania |
| 56 | Joseph Babyak | 10 | son | — | Pennsylvania |
| 57 | Edward Babyak | 4 | son | — | Pennsylvania |
| 58 | Charles Brookhouser | 64 | head | Repairman | Pennsylvania |
| 59 | Sarah Brookhouser | 59 | wife | — | Pennsylvania |
| 60 | Doris Brookhouser | 20 | daughter | — | Pennsylvania |
| 61 | Norman Player | 41 | son-in-law | Laborer | Ohio |
| 62 | Annabelle Player | 36 | daughter | — | Pennsylvania |
| 63 | John Kubala | 57 | head | Laborer | Czechoslovakia |
| 64 | Mary Kubala | 51 | wife | — | Czechoslovakia |
| 65 | Helen Kubala | 19 | daughter | Maid | Pennsylvania |
| 66 | Olga Kubala | 16 | daughter | — | Pennsylvania |
| 67 | Irene Kubala | 13 | daughter | — | Pennsylvania |
| 68 | William Long | 37 | head | Machinist | Ohio |
| 69 | Jessie Long | 34 | wife | — | Pennsylvania |
| 70 | Billy Long | 10 | son | — | Pennsylvania |
| 71 | Nancy Long | 2 | daughter | — | Pennsylvania |
| 72 | Elizabeth Long | 65 | head | — | Scotland |
| 73 | Grace Long | 39 | daughter | — | Pennsylvania |
| 74 | Christine Long | 35 | daughter | Bookkeeper | Pennsylvania |
| 75 | Dorothy Long THIS PERSON | 31 | daughter | Bookkeeper | Pennsylvania |
| 76 | Robert Long | 28 | son | Truck Driver | Pennsylvania |
| 77 | Donald Long | 24 | son | Laborer | Pennsylvania |
| 78 | Dorothy Long | 22 | daughter-in-law | — | Pennsylvania |
| 79 | Axel Edman | 44 | head | Machinist | Sweden |
| 80 | Florence Edman | 37 | wife | — | Pennsylvania |
Pedigree Summary
Dorothy + 4 siblings
Gen 1 · 6 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)