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Mary Weber — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Mary Weber across the 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Weber |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Collingdale |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Collingdale |
| Est. Birth Year | ~1926 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Weber | Daughter | — | 14 | ~1926 |
| Linda Weber | Daughter | — | 6 | ~1934 |
| Theresa Weber | Daughter | — | 11 | ~1929 |
| John Weber | Head | — | 40 | ~1900 |
| Lambert Weber | Son | — | 3 | ~1937 |
| John Weber | Son | — | 10 | ~1930 |
| Richard Weber | Son | — | 6 | ~1934 |
| Frederick Weber | Son | — | 12 | ~1928 |
| Beatrice Weber | Spouse | — | 36 | ~1904 |
Census Appearances
1930
Delaware, Pennsylvania
Daughter, age 4
Delaware, Pennsylvania · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Weber |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Daughter, age 14
Delaware-County, Pennsylvania · implied b. ~1926 — 9 household members
| Surname | Weber |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Collingdale |
| 1935 Residence (County) | Delaware |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Weber across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Weber
Daughter · 1940 · age 14 · b. ~1926 · Pennsylvania
★ You are viewing this record
Sibling
Frederick Weber
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Weber
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lambert Weber
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Weber
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Linda Weber
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Weber
Sibling · 1940 · age 11
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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03490-00201)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William H. Perkins | 73 | Head | Linotype Oper. | Kentucky |
| 2 | Agnes Perkins | 35 | Daughter | Weaver | Virginia |
| 3 | William J. Macfarland | 57 | Head | Chief Rail Clerk | Pennsylvania |
| 4 | Olen T. Macfarland | 45 | Wife | — | Washington DC |
| 5 | William T. Macfarland | 19 | Son | — | Pennsylvania |
| 6 | Ada M. Macfarland | 16 | Daughter | — | Pennsylvania |
| 7 | Raymond Onderdonk | 46 | Head | Sheet Metal Work | Pennsylvania |
| 8 | Caroline E. Onderdonk | 42 | Wife | — | Pennsylvania |
| 9 | Fred A. Bockman | 66 | Head | Salesman | Germany |
| 10 | Lena H. Bockman | 64 | Wife | — | Rhode Island |
| 11 | James P. Nelms | 29 | Head | Electrician | Pennsylvania |
| 12 | Dorothy A. Nelms | 27 | Wife | — | Pennsylvania |
| 13 | Dorothy M. Nelms | 8 | Daughter | — | Pennsylvania |
| 14 | James J. Nelms | 6 | Son | — | Pennsylvania |
| 15 | Dolores A. Nelms | 4 | Daughter | — | Pennsylvania |
| 16 | John W. Lane | 38 | Head | Asst. Editor | Pennsylvania |
| 17 | Katherine A. Elder | 59 | Head | — | Maryland |
| 18 | Arthur H. Caballero | 32 | Son-in-law | Broker | Pennsylvania |
| 19 | Katherine Caballero | 30 | Daughter | — | Pennsylvania |
| 20 | John F. Weber | 40 | Head | Trainman | Pennsylvania |
| 21 | Beatrice Weber | 36 | Wife | — | Pennsylvania |
| 22 | Mary M. Weber THIS PERSON | 14 | Daughter | — | Pennsylvania |
| 23 | Frederick Weber | 12 | Son | — | Pennsylvania |
| 24 | Theresa B. Weber | 11 | Daughter | — | Pennsylvania |
| 25 | John W. Weber | 10 | Son | — | Pennsylvania |
| 26 | Richard V. Weber | 6 | Son | — | Pennsylvania |
| 27 | Linda A. Weber | 6 | Daughter | — | Pennsylvania |
| 28 | Lambert H. Weber | 3 | Son | — | Pennsylvania |
| 29 | Burt S. Remaley | 55 | Head | Electrical Inspector | Pennsylvania |
| 30 | Charlotte L. Remaley | 55 | Wife | — | Pennsylvania |
| 31 | Charles F. Remaley | 23 | Son | New Broker | Pennsylvania |
| 32 | Kenneth T. Heffernan | 40 | Head | Salesman | Pennsylvania |
| 33 | Mary V. Heffernan | 44 | Wife | — | Pennsylvania |
| 34 | Margaret Heffernan | 13 | Daughter | — | Pennsylvania |
| 35 | Agnes Heffernan | 11 | Daughter | — | Pennsylvania |
| 36 | Henry J. Rowland | 55 | Head | Safety Man | Delaware |
| 37 | Florence K. Rowland | 54 | Wife | — | Maryland |
| 38 | Mary J. Henney | 83 | Mother-in-law | — | Iowa |
| 39 | Edgar L. West | 55 | Head | Road Builder | Delaware |
| 40 | Althea S. West | 53 | Wife | — | Delaware |
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)