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Mary Bender — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lehigh-County, Pennsylvania
Our Model Tree links this Mary Bender across the 1930 and 1940 US Censuses in Lehigh-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lehigh-County, Pennsylvania |
| Surname | Bender |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Fullerton village |
| 1935 Residence (County) | Lehigh |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Music House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 624 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Bookkeeper |
| Township / Ward | Fullerton Village |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Agnes Bender | Spouse | — | 48 | ~1892 |
| Mary Bender | Daughter | — | 21 | ~1919 |
| Regis Bender | Son | — | 5 | ~1935 |
| Alvin Bender | Head | — | 51 | ~1889 |
| Dorothy Bender | Daughter | — | 20 | ~1920 |
| Joan Bender | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Lehigh, Pennsylvania
Daughter, age 10
Lehigh, Pennsylvania · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bender |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Czechoslovakia |
| Mother's Birthplace | Czechoslovakia |
| Occupation | paster |
| Industry | Box factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lehigh-County, Pennsylvania
Daughter, age 21
Lehigh-County, Pennsylvania · implied b. ~1919 — 6 household members
| Surname | Bender |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Fullerton village |
| 1935 Residence (County) | Lehigh |
| Occupation | Bookkeeper |
| Industry | Music House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 624 |
| 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 Mary Bender across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bender
Daughter · 1940 · age 21 · b. ~1919 · Pennsylvania
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Sibling
Joan Bender
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Bender
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Regis Bender
Sibling · 1940 · age 5
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 — Lehigh-County, Pennsylvania
Open full size
1940 US Federal Census — Lehigh-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03548-00545)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marianne Peters | 54 | Wife | — | Pennsylvania |
| 42 | Earl Bortz | 26 | Son-in-law | Assembler | Pennsylvania |
| 43 | Helen Bortz | 27 | Daughter | — | Pennsylvania |
| 44 | Patricia Bortz | 5 | Daughter | — | Pennsylvania |
| 45 | Joan Bortz | 3 | Daughter | — | Pennsylvania |
| 46 | Robert Bortz | 1 | Son | — | Pennsylvania |
| 47 | Oscar E. Scheirer | 77 | Head | Silk Worker | Pennsylvania |
| 48 | Ida A. Scheirer | 66 | Wife | — | Pennsylvania |
| 49 | Minnie C. Reed | 63 | Sister-in-law | — | Pennsylvania |
| 50 | James E. Diefenderfer | 70 | Head | Assembler | Pennsylvania |
| 51 | Charles E. Diefenderfer | 39 | Son | Auditor | Pennsylvania |
| 52 | Alvin Bender | 51 | Head | Bartender | Germany |
| 53 | Agnes Bender | 48 | Wife | — | Germany |
| 54 | Mary Bender THIS PERSON | 21 | Daughter | Bookkeeper | Pennsylvania |
| 55 | Joan Bender | 19 | Daughter | New Worker | Pennsylvania |
| 56 | Dorothy Bender | 20 | Daughter | — | Pennsylvania |
| 57 | Regis Bender | 5 | Son | — | Pennsylvania |
| 58 | Norman Burk | 42 | Head | Mechanic | Pennsylvania |
| 59 | Eva Burk | 42 | Wife | Clerk | Pennsylvania |
| 60 | Irene Burk | 18 | Daughter | — | Pennsylvania |
| 61 | Nathan Burk | 21 | Son | Technician | Pennsylvania |
| 62 | Henrietta Burk | 20 | Daughter | New Worker | Pennsylvania |
| 63 | Allan E. Bortz | 36 | Head | Mail Carrier | Pennsylvania |
| 64 | Mildred Bortz | 37 | Wife | — | Pennsylvania |
| 65 | William H. Wescoe | 71 | Father-in-law | Tinsmith | Pennsylvania |
| 66 | Ralph H. Wescoe | 34 | Brother-in-law | Metal Worker | Pennsylvania |
| 67 | Marie Danz | 55 | Head | Dressmaker | Germany |
| 68 | Baron Muss | 36 | Head | Salesman | Pennsylvania |
| 69 | Margaret Muss | 34 | Wife | — | Germany |
| 70 | Carl Muss | 17 | Son | — | Pennsylvania |
| 71 | Baron Jr. Muss | 16 | Son | — | Pennsylvania |
| 72 | Ernest Muss | 12 | Son | — | Pennsylvania |
| 73 | Harry Hartman | 60 | Head | Postmaster | Pennsylvania |
| 74 | Minnie Hartman | 62 | Wife | — | Pennsylvania |
| 75 | Harry Jr. Hartman | 24 | Son | Manager | Pennsylvania |
| 76 | Louise Hartman | 21 | Daughter | Secretary | Pennsylvania |
| 77 | Earl Hartman | 18 | Son | Elevator Operator | Pennsylvania |
| 78 | George W. Fister | 57 | Head | General Mgr | Pennsylvania |
| 79 | Mae Fister | 33 | Wife | — | Pennsylvania |
| 80 | Jane Fister | 12 | 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)