BB
Betty Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Betty Brown across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1914), then head of a 6-person household.
Age 26
b. ~1914
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Brown |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Librarian |
| Industry | Private Library |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 44 |
| Highest Grade | C 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Librarian |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1914 |
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 Betty | Age | Birth yr |
|---|---|---|---|---|
| Patricia Brown | Daughter | — | 21 | ~1919 |
| Betty Brown | Daughter | — | 26 | ~1914 |
| John Brown | Head | — | 60 | ~1880 |
| John Brown | Son | — | 23 | ~1917 |
| Chalmers Brown | Son | — | 24 | ~1916 |
| Ethel Brown | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 6
Allegheny, Pennsylvania · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 16
Allegheny, Pennsylvania · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 26
Allegheny-County, Pennsylvania · implied b. ~1914 — 6 household members
| Surname | Brown |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Librarian |
| Industry | Private Library |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 44 |
| Highest Grade | C 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 Betty Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Brown (~0.92 confidence) and father John Brown (~0.92 confidence) and mother Ethel Brown (~0.92 confidence) and mother Ethel Brown (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Brown
b. ~1880
Source father
● Household
· direct · ~0.92
Father
John Brown
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Ethel Brown
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Ethel Brown
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Betty Brown
Daughter · 1940 · age 26 · b. ~1914 · Pennsylvania
★ You are viewing this record
Sibling
Patricia Brown
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Brown
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Chalmers Brown
Sibling · 1940 · age 24
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
39 people indexed on this census page (nara:1940:m-t0627-03654-00210)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Madha John | 62 | Roomer | — | England |
| 42 | Edna Brunson | 48 | Head | Proprietor | West Virginia |
| 43 | Sara Brunson | 21 | Daughter | Gymnasium Instructor | West Virginia |
| 44 | Bessie Mae Jones | 50 | Housekeeper | Housekeeper | Pennsylvania |
| 45 | Anna Fricke | 50 | Head | — | Pennsylvania |
| 46 | Arthur Hunter | 55 | Lodger | Elevator Operator | Pennsylvania |
| 47 | Ethel Hunter | 53 | Lodger | — | New York |
| 48 | Marion Mckay | 56 | Head | Economics Teacher | Ohio |
| 49 | Alma Mckay | 56 | Wife | — | Ohio |
| 50 | Marian Mckay | 20 | Daughter | — | New Hampshire |
| 51 | Theda Waterman | 48 | Lodger | Assistant Supervisor | Nebraska |
| 52 | Aristotle Colonas | 60 | Head | Salesman | Greece |
| 53 | Ellen Colonas | 43 | Wife | — | Greece |
| 54 | Zoe Colonas | 26 | Daughter | Beauty Culturist | Greece |
| 55 | Son George | None | M | Retail Shirts | — |
| 56 | Son Aristides | None | M | — | — |
| 57 | Nicholas Vrionides | 48 | Roomer | Advertising Manager | Greece |
| 58 | William Yeager | 50 | Head | Business Teacher | Pennsylvania |
| 59 | Alice Yeager | 49 | Wife | — | Pennsylvania |
| 60 | Kenneth Yeager | 22 | Son | — | Pennsylvania |
| 62 | Ben Anderson | 47 | Head | Private Secretary | Pennsylvania |
| 63 | Dora Anderson | 43 | Wife | — | Pennsylvania |
| 64 | Amanda Josephson | 52 | Housekeeper | Housekeeper | Pennsylvania |
| 65 | John Brown | 60 | Head | Lawyer | Pennsylvania |
| 66 | Ethel Brown | 59 | Wife | — | Pennsylvania |
| 67 | Betty Brown THIS PERSON | 26 | Daughter | Librarian | Pennsylvania |
| 68 | Chalmers Brown | 24 | Son | Commercial Teacher | Pennsylvania |
| 69 | John Jr. Brown | 23 | Son | — | Pennsylvania |
| 70 | Patricia Brown | 21 | Daughter | — | Pennsylvania |
| 71 | Elsie Stevenson | 51 | Head | — | Pennsylvania |
| 72 | Mary Stevenson | 21 | Daughter | — | Pennsylvania |
| 73 | Niles Anderson | 32 | Head | Supervisor Of Safety | Indiana |
| 74 | Norma Anderson | 36 | Wife | — | Tennessee |
| 75 | William Anderson | 0 | Son | — | Pennsylvania |
| 76 | Albert Mcrae | 24 | Head | Proprietor | Pennsylvania |
| 77 | Eileen Mcrae | 23 | Wife | Nurse | Pennsylvania |
| 78 | Carrie Graver | 70 | Head | — | Pennsylvania |
| 79 | Marguerite Graver | 23 | Daughter | Art Teacher | Pennsylvania |
| 80 | Robert Brown | 23 | Head | Artist | Pennsylvania |
Related Census Records
Pedigree Summary
Betty + 3 siblings
Gen 1 · 4 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)