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Mary Weaver — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lancaster-County, Pennsylvania
Our Model Tree links this Mary Weaver across the 1920, 1930 and 1940 US Censuses in Lancaster-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents B & Eli — first a daughter (b.~1913), then head of a 6-person household.
Age 27
b. ~1913
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lancaster-County, Pennsylvania |
| Surname | Weaver |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | West Lampeter Twp. |
| 1935 Residence (County) | Lancaster |
| Additional Details | |
| Occupation | Book keeper |
| Industry | Seed store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1020 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Book Keeper |
| Township / Ward | West Lampeter Twp |
| Est. Birth Year | ~1913 |
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 |
|---|---|---|---|---|
| Maud Weaver | Daughter | — | 23 | ~1917 |
| Helen Weaver | Daughter | — | 31 | ~1909 |
| Ella Weaver | Daughter | — | 21 | ~1919 |
| Mary Weaver | Daughter | — | 27 | ~1913 |
| B Weaver | Head | — | 63 | ~1877 |
| Ella Weaver | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Lancaster, Pennsylvania
Daughter, age 8
Lancaster, Pennsylvania · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Weaver |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| 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
Lancaster, Pennsylvania
Daughter, age 18
Lancaster, Pennsylvania · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Weaver |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Bookkeeper |
| Industry | Dr Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lancaster-County, Pennsylvania
Daughter, age 27
Lancaster-County, Pennsylvania · implied b. ~1913 — 6 household members
| Surname | Weaver |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | West Lampeter Twp. |
| 1935 Residence (County) | Lancaster |
| Occupation | Book keeper |
| Industry | Seed store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1020 |
| Highest Grade | H-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 Weaver across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father B Weaver (~0.92 confidence) and father Eli Weaver (~0.92 confidence) and father B Weaver (~0.92 confidence) and mother Ella Weaver (~0.92 confidence) and mother Ella Weaver (~0.92 confidence) and mother Ida Weaver (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
B Weaver
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Eli Weaver
b. ~1877
Source father
● Household
· direct · ~0.92
Father
B Weaver
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Ella Weaver
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Ella Weaver
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Ida Weaver
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Weaver
Daughter · 1940 · age 27 · b. ~1913 · Pennsylvania
★ You are viewing this record
Sibling
Maud Weaver
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Weaver
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella Weaver
Sibling · 1940 · age 21
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 — Lancaster-County, Pennsylvania
Open full size
1940 US Federal Census — Lancaster-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03535-00718)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elvin S. Groff | 28 | Head | Farmer | Pennsylvania |
| 2 | May G. Groff | 25 | Wife | — | Pennsylvania |
| 3 | Evelyn R. Groff | 2 | Daughter | — | Pennsylvania |
| 4 | Melle E. Groff | 0 | Son | — | Pennsylvania |
| 5 | Paul S. Kelsen | 32 | Head | Pin Smith | Pennsylvania |
| 6 | Ethel M. Kelsen | 29 | Wife | — | Virginia |
| 7 | Donald R. Kelsen | 5 | Son | — | Pennsylvania |
| 8 | Park D. Moore | 37 | Head | Farmer | Pennsylvania |
| 9 | Eva Moore | 35 | Wife | — | Pennsylvania |
| 10 | Donald Moore | 4 | Son | — | Pennsylvania |
| 11 | Stanley Moore | 1 | Son | — | Pennsylvania |
| 12 | Harry E. Guess | 66 | Head | Teacher | Pennsylvania |
| 13 | Lottie A. Stumpf | 49 | Housekeeper | Housekeeper | Pennsylvania |
| 14 | B. Ellis Weaver | 63 | Head | Farmer | Pennsylvania |
| 15 | Ella M. Weaver | 60 | Wife | — | Pennsylvania |
| 16 | Helen W. Weaver | 31 | Daughter | Teacher | Pennsylvania |
| 17 | Mary E. Weaver THIS PERSON | 27 | Daughter | Book Keeper | Pennsylvania |
| 18 | Maud E. Weaver | 23 | Daughter | Teacher | Pennsylvania |
| 19 | Ella Mae Weaver | 21 | Daughter | — | Pennsylvania |
| 20 | John H. Buckwalter | 42 | Head | Farmer | Pennsylvania |
| 21 | Mary S. Buckwalter | 40 | Wife | — | Pennsylvania |
| 22 | Harold Buckwalter | 18 | Son | Laborer | Pennsylvania |
| 23 | Arlene Buckwalter | 17 | Daughter | — | Pennsylvania |
| 24 | Richard Buckwalter | 15 | Son | New Worker | Pennsylvania |
| 25 | Anna Buckwalter | 8 | Daughter | — | Pennsylvania |
| 26 | Paul Buckwalter | 1 | Son | — | Pennsylvania |
| 27 | Willis G. Lefever | 36 | Head | Laborer | Pennsylvania |
| 28 | Mildred V. Lefever | 29 | Wife | — | Pennsylvania |
| 29 | Willis G. Lefever | 8 | Son | — | Pennsylvania |
| 30 | Park E. Lefever | 7 | Son | — | Pennsylvania |
| 31 | Charles S. Lefever | 3 | Son | — | Pennsylvania |
| 32 | Florence A. Lefever | 2 | Daughter | — | Pennsylvania |
| 33 | John M. Keener | 54 | Head | Farmer | Pennsylvania |
| 34 | Lydia Keener | 47 | Wife | — | Pennsylvania |
| 35 | Mary E. Keener | 20 | Daughter | — | Pennsylvania |
| 36 | Edna M. Keener | 18 | Daughter | — | Pennsylvania |
| 37 | Myriam B. Keener | 16 | Daughter | — | Pennsylvania |
| 38 | George B. Keener | 13 | Son | — | Pennsylvania |
| 39 | Lewis Hall | 18 | Hired man | Farmer | Pennsylvania |
| 40 | Henry Arment | 45 | Head | Hire Hand | Pennsylvania |
Pedigree Summary
Mary + 3 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)