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Mary Heller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Northampton-County, Pennsylvania
Our Model Tree links this Mary Heller across the 1920, 1930 and 1940 US Censuses in Northampton-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 3-person household.
Age 76
b. ~1864
Female
Head
Born: Pennsylvania
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Northampton-County, Pennsylvania |
| Surname | Heller |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pen Argyl Borough |
| 1935 Residence (County) | Northampton |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pen Argyl Borough |
| Est. Birth Year | ~1864 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lloyd Heller | Son | — | 42 | ~1898 |
| Anthony Heller | Daughter | — | 34 | ~1906 |
| Mary Heller | Head | — | 76 | ~1864 |
Census Appearances
1920
Northampton, Pennsylvania
Spouse, age 58
Northampton, Pennsylvania · implied b. ~1862 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Heller |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| 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
Northampton, Pennsylvania
Head, age 68
Northampton, Pennsylvania · implied b. ~1862 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Heller |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | $2000 |
| Radio Set | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Northampton-County, Pennsylvania
Head, age 76
Northampton-County, Pennsylvania · implied b. ~1864 — 3 household members
| Surname | Heller |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pen Argyl Borough |
| 1935 Residence (County) | Northampton |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 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 Heller across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Heller
Head · 1940 · age 76 · b. ~1864 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Northampton-County, Pennsylvania
Open full size
1940 US Federal Census — Northampton-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03593-00654)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Heller THIS PERSON | 76 | Head | — | Pennsylvania |
| 42 | Anthony Heller | 34 | Daughter | Button Holer | Pennsylvania |
| 43 | Lloyd Heller | 42 | Son | Paint Sprayer | Pennsylvania |
| 44 | John H. Tockash | 46 | Head | Laborer | Pennsylvania |
| 45 | Julia C. Tockash | 43 | Wife | — | Austria-Hungary |
| 46 | George W. Tockash | 23 | Son | Knitter'S Helper | Pennsylvania |
| 47 | John P. Tockash | 14 | Son | — | Pennsylvania |
| 48 | William Hilliard | 81 | Head | — | Pennsylvania |
| 49 | Minnie M. Hilliard | 67 | Wife | — | Pennsylvania |
| 50 | Frederick A. Potzell | 49 | Head | Carman | Pennsylvania |
| 51 | Myrtle M. Potzell | 45 | Wife | Silk Seaming | Pennsylvania |
| 52 | Elva M. Potzell | 19 | Daughter | Pockette Operator | Pennsylvania |
| 53 | Robert A. Sandt | 34 | Head | Proprietor Druggist | Pennsylvania |
| 54 | Marion P. Sandt | 31 | Wife | — | Pennsylvania |
| 55 | Priscilla L. Sandt | 1 | Daughter | — | Pennsylvania |
| 56 | Lillian Edwards | 50 | Head | Final Examiner | Colorado |
| 57 | Margaret M. Edwards | 35 | Daughter | Topper | Pennsylvania |
| 58 | Russell Edwards | 31 | Son | Laborer | Pennsylvania |
| 59 | George A. Mace | 64 | Head | Salesman | Maryland |
| 60 | Rose M. Mace | 64 | Wife | — | Pennsylvania |
| 61 | Margaret L. Mace | 35 | Daughter | Teacher | Pennsylvania |
| 62 | Frank D. Bieler | 64 | Head | Proprietor - Salesman | Pennsylvania |
| 63 | Lillie A. Bieler | 68 | Wife | — | Pennsylvania |
| 64 | Minerva Heller | 77 | Aunt | — | Pennsylvania |
| 65 | Alfred C. Mutton | 46 | Head | Locomotive Engineer | Pennsylvania |
| 66 | Minnie M. Mutton | 44 | Wife | — | Pennsylvania |
| 67 | George Melvin | 25 | Son-in-law | Meat Cutter | Pennsylvania |
| 68 | Winifred J. Melvin | 23 | Daughter | — | Pennsylvania |
| 69 | Charles H. Masters | 37 | Head | Laborer | Pennsylvania |
| 70 | Alice M. Masters | 45 | Sister | — | Pennsylvania |
| 71 | Amelia Masters | 69 | Mother | — | Pennsylvania |
| 72 | Samuel C. Radcliffe | 60 | Head | Splitter | Pennsylvania |
| 73 | Naomi Radcliffe | 56 | Wife | — | Pennsylvania |
| 74 | Joanna Bitz | 85 | Head | — | Pennsylvania |
| 75 | Anna R. Bitz | 40 | Daughter | — | Pennsylvania |
| 76 | Elias J. Smith | 81 | Head | — | Pennsylvania |
| 77 | Charles E. Smith | 44 | Head | Millman | Pennsylvania |
| 78 | Manda S. Smith | 39 | Wife | — | Pennsylvania |
| 79 | Lottie M. Evans | 52 | Sister | Cleaning Girl | Pennsylvania |
| 80 | Ruth E. Evans | 12 | Niece | — | 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)