EC
Earl Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Earl Clark across the 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1896), then head of a 8-person household.
Age 44
b. ~1896
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Clark |
| Given Name | Earl |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Upper Chichester |
| Additional Details | |
| Occupation | Lineman |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2100 |
| Highest Grade | Hs 5 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Lineman |
| Township / Ward | Upper Chichester |
| Est. Birth Year | ~1896 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Earl | Age | Birth yr |
|---|---|---|---|---|
| Earl Clark | Son | — | 19 | ~1921 |
| Norman Clark | Son | — | 15 | ~1925 |
| Harold Clark | Son | — | 17 | ~1923 |
| Joseph Clark | Son | — | 25 | ~1915 |
| Helen Clark | Daughter | — | 12 | ~1928 |
| Lucy Clark | Spouse | — | 46 | ~1894 |
| Doris Clark | Daughter | — | 7 | ~1933 |
| Earl Clark | Head | — | 44 | ~1896 |
Census Appearances
1930
Delaware, Pennsylvania
Head, age 34
Delaware, Pennsylvania · implied b. ~1896 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Earl |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 22 |
| Father's Birthplace | North Ireland |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Electric Company |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000.00 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Head, age 44
Delaware-County, Pennsylvania · implied b. ~1896 — 8 household members
| Surname | Clark |
| Given Name | Earl |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Upper Chichester |
| Occupation | Lineman |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2100 |
| Highest Grade | Hs 5 |
| 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 Earl Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Earl Clark
Head · 1940 · age 44 · b. ~1896 · 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 — 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-t0627-03496-00752)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wilbert Sommers | 32 | Head | Laborer | Pennsylvania |
| 2 | Dorothy Sommers | 25 | Wife | — | Maryland |
| 3 | William Sommers | 2 | Son | — | Pennsylvania |
| 4 | Antonio Marzagis | 66 | Head | Laborer | Italy |
| 5 | Charles Wilks | 50 | Head | Machinist | Pennsylvania |
| 6 | Mary Wilks | 20 | Daughter | — | Pennsylvania |
| 7 | Edith Wilks | 15 | Daughter | — | Pennsylvania |
| 8 | Dorothy Wilks | 4 | Daughter | — | Pennsylvania |
| 9 | Joseph Wilks | 64 | Brother | Lead Man | Pennsylvania |
| 10 | Charles Eyre | 27 | Son in law | Clerk | Pennsylvania |
| 11 | Ethel Eyre | 25 | Daughter | — | Pennsylvania |
| 12 | Ethel Eyre | 7 | Granddaughter | — | Pennsylvania |
| 13 | Earl Clark THIS PERSON | 44 | Head | Lineman | Pennsylvania |
| 14 | Lucy Clark | 46 | Wife | 0 | Pennsylvania |
| 15 | Joseph Clark | 25 | Son | Helper | Pennsylvania |
| 16 | Earl Jr Clark | 19 | Son | Laborer | Pennsylvania |
| 17 | Harold Clark | 17 | Son | 0 | Pennsylvania |
| 18 | Norman Clark | 15 | Son | 0 | Pennsylvania |
| 19 | Helen Clark | 12 | Daughter | 0 | Pennsylvania |
| 20 | Doris Clark | 7 | Daughter | 0 | Pennsylvania |
| 21 | Mima Babe | 48 | Head | 0 | Pennsylvania |
| 22 | Stanley Babe | 28 | Son | Erector | Pennsylvania |
| 23 | Kenneth Babe | 26 | Son | Laborer | Pennsylvania |
| 24 | Paul Babe | 21 | Son | — | Pennsylvania |
| 25 | Nelson Babe | 19 | Son | 0 | Pennsylvania |
| 26 | Irma Babe | 12 | Daughter | 0 | Pennsylvania |
| 27 | Ida Grider | 83 | Mother | 0 | Delaware |
| 28 | James Todd | 31 | Head | Salesman | Pennsylvania |
| 29 | Helen Todd | 26 | Wife | — | Maryland |
| 30 | John Todd | 4 | Son | — | Pennsylvania |
| 31 | Robert Todd | 3 | Son | — | Pennsylvania |
| 32 | Marion Todd | 1 | Daughter | — | Pennsylvania |
| 33 | Edgar Mcknitt | 33 | Head | Salesman | Maryland |
| 34 | Francis Mcknitt | 31 | Wife | — | Delaware |
| 35 | William Foster | 25 | Head | Time Keeper | Maryland |
| 36 | Dorothy Foster | 25 | Wife | — | Maryland |
| 37 | William Jr Foster | 5 | Son | — | Maryland |
| 38 | Edward Hearn | 29 | Head | Tester Gas | Maryland |
| 39 | Virginia Hearn | 25 | Wife | 0 | Delaware |
| 40 | A. Edward Hearn | 7 | Son | 0 | Pennsylvania |
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)