WC
Walter Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Westmoreland-County, Pennsylvania
Our Model Tree links this Walter Clark across the 1920, 1930 and 1940 US Censuses in Westmoreland-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Laura — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Westmoreland-County, Pennsylvania |
| Surname | Clark |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Westmd |
| Additional Details | |
| Occupation | New Worker |
| Highest Grade | G 7 |
| 1935 Residence | Penna |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Derry Twp |
| 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 Walter | Age | Birth yr |
|---|---|---|---|---|
| Laura Clark | Daughter | — | 16 | ~1924 |
| John Clark | Head | — | 59 | ~1881 |
| Glenn Clark | Son | — | 24 | ~1916 |
| Raymond Clark | Son | — | 25 | ~1915 |
| Walter Clark | Son | — | 21 | ~1919 |
| Laura Clark | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Westmoreland, Pennsylvania
Son, age 1
Westmoreland, Pennsylvania · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Walter W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | English |
| Class of Worker | none |
| Speaks English | England |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Westmoreland, Pennsylvania
Son, age 12
Westmoreland, Pennsylvania · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Walter Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Westmoreland-County, Pennsylvania
Son, age 21
Westmoreland-County, Pennsylvania · implied b. ~1919 — 6 household members
| Surname | Clark |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Westmd |
| Occupation | New Worker |
| Highest Grade | G 7 |
| 1935 Residence | Penna |
| 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 Walter Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Clark (~0.92 confidence) and mother Laura Clark (~0.92 confidence) and father Walter Clark (~0.92 confidence) and mother Alice Clark (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Clark
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Laura Clark
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Walter Clark
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Alice Clark
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Walter Clark
Son · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
Raymond Clark
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glenn Clark
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Clark
Sibling · 1940 · age 16
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 — Westmoreland-County, Pennsylvania
Open full size
1940 US Federal Census — Westmoreland-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03629-00230)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lewis Frayvolt | 11 | Son | — | Pennsylvania |
| 42 | Martin Frayvolt | 28 | Head | Coal Miner | Pennsylvania |
| 43 | Alice Frayvolt | 24 | Wife | Housework | Pennsylvania |
| 44 | Ruth Frayvolt | 5 | Daughter | — | Pennsylvania |
| 45 | Elizabeth Frayvolt | 50 | Head | House Keeper | Pennsylvania |
| 46 | John Clark | 59 | Head | Labour | Pennsylvania |
| 47 | Laura D. Clark | 58 | Wife | Housework | Pennsylvania |
| 48 | Raymond Clark | 25 | Son | Farmwork | Pennsylvania |
| 49 | Glenn Clark | 24 | Son | Coal Miner | Pennsylvania |
| 50 | Walter Clark THIS PERSON | 21 | Son | New Worker | Pennsylvania |
| 51 | Laura Clark | 16 | Daughter | New Worker | Pennsylvania |
| 52 | Joe Glass | 61 | Head | Coal Miner | Yugoslavia |
| 53 | Mary D. Glass | 52 | Wife | House Keeper | Yugoslavia |
| 54 | Joe Glass | 23 | Son | Labour | Pennsylvania |
| 55 | Domenic Razza | 56 | Head | Coal Miner | Italy |
| 56 | Nick Razza | 27 | Son | — | Pennsylvania |
| 57 | Aldo Razza | 24 | Son | Coal Miner | Pennsylvania |
| 58 | Mary Razza | 19 | Daughter | Housework | Pennsylvania |
| 59 | Armand Razza | 0 | Grandchild | — | Pennsylvania |
| 60 | E. J. Schrum | 72 | Head | Coal Miner | Pennsylvania |
| 61 | Luella Schrum | 32 | Daughter | Housework | Pennsylvania |
| 62 | Edward Mcclure | 45 | Son in law | Coal Miner | Pennsylvania |
| 63 | Francis Mcclure | 13 | Grandchild | — | Pennsylvania |
| 64 | Wayne Mcclure | 12 | Grandchild | — | Pennsylvania |
| 65 | Dwayne Mcclure | 12 | Grandchild | — | Pennsylvania |
| 66 | William Marrie | 36 | Head | Devilery Man | Pennsylvania |
| 67 | Eva D. Marrie | 43 | Wife | Housework | Pennsylvania |
| 68 | Anna Naulty | 69 | Sister in law | Housework | Pennsylvania |
| 69 | Oscar Bufa | 50 | Head | Teacher | Ohio |
| 70 | Grita Bufa | 48 | Wife | Housework | Pennsylvania |
| 71 | Irene Kelly | 26 | Step child | Show Worker | Pennsylvania |
| 72 | John B. Lenhart | 53 | Head | Track Layer | Pennsylvania |
| 73 | Dora Lenhart | 50 | Wife | Housework | Pennsylvania |
| 74 | John Prah | 56 | Head | Coal Cutter | Austria |
| 75 | Louise Prah | 56 | Wife | Housework | Austria |
| 76 | Louis Prah | 21 | Son | New Worker | Pennsylvania |
| 77 | Fred Prah | 19 | Son | Farm Hand | Pennsylvania |
| 78 | Rudy Prah | 15 | Son | — | Pennsylvania |
| 79 | Rose Prah | 12 | Daughter | — | Pennsylvania |
Pedigree Summary
Walter + 3 siblings
Gen 1 · 4 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)