RC
Robert Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Clark across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Mary — first a head (b.~1898), then head of a 4-person household.
Age 42
b. ~1898
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Clark |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Elizabeth Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road Work |
| Class of Worker | GW |
| Hours Worked | 32 |
| Income (1939) | 988 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Elizabeth Borough |
| Est. Birth Year | ~1898 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Irene Clark | Daughter | — | 2 | ~1938 |
| Robert Clark | Head | — | 42 | ~1898 |
| Robert Clark | Son | — | 4 | ~1936 |
| Grace Clark | Spouse | — | 41 | ~1899 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 21
Allegheny, Pennsylvania · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | laborer |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 32
Allegheny, Pennsylvania · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 26 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Carpenter |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 42
Allegheny-County, Pennsylvania · implied b. ~1898 — 4 household members
| Surname | Clark |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Elizabeth Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Laborer |
| Industry | Road Work |
| Class of Worker | GW |
| Hours Worked | 32 |
| Income (1939) | 988 |
| Highest Grade | No 5 |
| 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 Robert 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 Mary Clark (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Clark
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Mary Clark
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Clark
Head · 1940 · age 42 · b. ~1898 · 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-t0627-03403-00226)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Pearl O. Wilson | 44 | Wife | — | Pennsylvania |
| 2 | David L. Wilson | 10 | Son | — | Pennsylvania |
| 3 | Ella Doyon | 74 | Mother-in-law | — | Pennsylvania |
| 4 | Charles A. Warner | 48 | Head | Truant Officer | Pennsylvania |
| 5 | William H. Lambert | 40 | Head | Mechanic | Pennsylvania |
| 6 | Mildred B. Lambert | 32 | Wife | — | Pennsylvania |
| 7 | William H. Fraun | 44 | Head | Owner | Pennsylvania |
| 8 | Loretta M. Fraun | 51 | Wife | — | Illinois |
| 9 | William H. Jr. Fraun | 17 | Son | — | Pennsylvania |
| 10 | Noreen Fraun | 15 | Daughter | — | Pennsylvania |
| 11 | Loretta M. Jr. Fraun | 9 | Daughter | — | Pennsylvania |
| 12 | Theresa Brennen | 75 | Friend | Dress Maker | Illinois |
| 13 | Harry B. Carr | 39 | Cousin | Owner | Ohio |
| 14 | Dan Natali | 54 | Head | Truck Driver | Italy |
| 15 | Mary O. Natali | 49 | Wife | — | Pennsylvania |
| 16 | Don Dean | 28 | Son | Engineer | Pennsylvania |
| 17 | Don Dean | 17 | Son | — | Pennsylvania |
| 18 | Pauline Dean | 28 | Daughter-in-law | — | West Virginia |
| 19 | David Dabbs | 28 | Friend | Medical Doctor | Washington D.C. |
| 20 | Harry L. Whalen | 29 | Head | Laborer | Pennsylvania |
| 21 | Virginia Whalen | 24 | Wife | Teacher | Pennsylvania |
| 22 | John E. Ray | 46 | Head | Brakeman | Pennsylvania |
| 23 | Alice J. Ray | 47 | Wife | — | Pennsylvania |
| 24 | Charles Ray | 19 | Son | — | Pennsylvania |
| 25 | Edith M. Ray | 17 | Daughter | — | Pennsylvania |
| 26 | Laura G. Ray | 16 | Daughter | — | Pennsylvania |
| 27 | Robert Clark THIS PERSON | 42 | Head | Laborer | Pennsylvania |
| 28 | Grace Clark | 41 | Wife | — | Pennsylvania |
| 29 | Robert E. Clark | 4 | Son | — | Pennsylvania |
| 30 | Irene Clark | 2 | Daughter | — | Pennsylvania |
| 31 | Martha Morris | 54 | Head | Cook | Pennsylvania |
| 32 | Clifford Sproul | 29 | Son-in-law | Plasterer | Pennsylvania |
| 33 | Enid Sproul | 27 | Daughter | — | Pennsylvania |
| 34 | Lynn Sproul | 1 | Grandson | — | Pennsylvania |
| 35 | Edward B. Help | 45 | Head | Owner | Pennsylvania |
| 36 | Gertrude O. Help | 34 | Wife | Book Keeper | Ohio |
| 37 | Herbert Help | 13 | Son | — | Pennsylvania |
| 38 | Edward Help | 8 | Son | — | Pennsylvania |
| 39 | Richard D. Wright | 33 | Head | Stationary Engineer | Pennsylvania |
| 40 | Dorothy M. Wright | 28 | Wife | — | Ohio |
Pedigree Summary
Robert
Gen 1 · 2 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)