EC
Elizabeth Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Elizabeth Clark across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Mary & Mary — first a spouse (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Clark |
| Given Name | Elizabeth |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Mt. Oliver Boro |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Mt Oliver Boro |
| Est. Birth Year | ~1909 |
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 Elizabeth | Age | Birth yr |
|---|---|---|---|---|
| George Clark | Head | — | 37 | ~1903 |
| George Clark | Son | — | 9 | ~1931 |
| Elizabeth Clark | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 11
Allegheny, Pennsylvania · implied b. ~1909 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | Elizabeth |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| 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 21
Allegheny, Pennsylvania · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Spouse, age 31
Allegheny-County, Pennsylvania · implied b. ~1909 — 3 household members
| Surname | Clark |
| Given Name | Elizabeth |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Mt. Oliver Boro |
| 1935 Residence (County) | Allegheny |
| Highest Grade | H 2 |
| 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 Elizabeth Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Clarke (~0.92 confidence) and mother Mary Clarke (~0.92 confidence) and father Samuel Clarke (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Clarke
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Mary Clarke
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
Samuel Clarke
b. ~1879
Source father
● Household
· direct · ~0.92
This person
Anchor record
Elizabeth Clark
Spouse · 1940 · age 31 · b. ~1909 · 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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03412-00167)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mildred Pemberton | 43 | Wife | — | Pennsylvania |
| 2 | Robert Pemberton | 23 | Son | Clerk | Pennsylvania |
| 3 | Allison Pemberton | 15 | Son | — | Pennsylvania |
| 4 | Rogers Dapper | 76 | Father in law | — | Pennsylvania |
| 5 | Thomas Corson | 21 | Head | Truck Driver | Pennsylvania |
| 6 | Lucille Corson | 20 | Wife | — | Pennsylvania |
| 7 | Patricia Ann Corson | 0 | Daughter | — | Pennsylvania |
| 8 | E. F. Dr. Trutter | 52 | Head | Medical Doctor | Pennsylvania |
| 9 | Clara P. Trutter | 42 | Wife | — | Mass. |
| 10 | James A. Trutter | 18 | Daughter | — | Pennsylvania |
| 11 | Mary Rose Trutter | 15 | Daughter | — | Pennsylvania |
| 12 | Edmond F. Trutter | 12 | Son | — | Pennsylvania |
| 13 | Billie Birk | 64 | Head | — | Pennsylvania |
| 14 | Harold Birk | 36 | Son | Brick Layer | Pennsylvania |
| 15 | William H. Mccombs | 45 | Head | Pump Tender | Pennsylvania |
| 16 | Dorothy Mccombs | 46 | Wife | — | Pennsylvania |
| 17 | Dorothy Mccombs | 18 | Daughter | — | Pennsylvania |
| 18 | Russel Rev. Archer | 31 | Head | Minister | Canada |
| 19 | Henry Knobel | 63 | Head | Labor | Pennsylvania |
| 20 | Margaret Knobel | 58 | Wife | — | Germany |
| 21 | Karl Knobel | 22 | Son | Insurance Clerk | Pennsylvania |
| 22 | Anna Willner | 45 | Lodger | — | Pennsylvania |
| 23 | Fred Freckling | 50 | Lodger | Labor | Germany |
| 24 | Alfred H. Butterworth | 64 | Head | Woodworker | Pennsylvania |
| 25 | Margaret Butterworth | 64 | Wife | — | Pennsylvania |
| 26 | Alice Butterworth | 25 | Daughter | Stenographer | Pennsylvania |
| 27 | Norman J. Davidson | 62 | Head | Truck Driver | Ohio |
| 28 | Mamie Davidson | 62 | Wife | — | Scotland |
| 29 | George Jr. Clark | 37 | Head | Clerk | Ireland |
| 30 | Elizabeth Clark THIS PERSON | 31 | Wife | — | Pennsylvania |
| 31 | George Jr. Clark | 9 | Son | — | Pennsylvania |
| 32 | Robert L. Gissendaner | 35 | Head | Electrical Engineer | Alabama |
| 33 | Ruth Gissendaner | 27 | Wife | — | Alabama |
| 34 | George Gissendaner | 7 | Son | — | Pennsylvania |
| 35 | Robert Jr. Gissendaner | 6 | Son | — | Pennsylvania |
| 36 | John Sr. Mohan | 43 | Head | Ad. Salesman | Pennsylvania |
| 37 | Mildred Mohan | 41 | Wife | — | Ohio |
| 38 | John Jr. Mohan | 16 | Son | — | Pennsylvania |
| 39 | James Mohan | 14 | Son | — | Pennsylvania |
| 40 | Richard Mohan | 6 | Son | — | Pennsylvania |
Pedigree Summary
Elizabeth
Gen 1 · 3 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)