DC
David Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this David Clark across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1907), then head of a 4-person household.
Age 33
b. ~1907
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Clark |
| Given Name | David |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Crane operator |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Crane Operator |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1907 |
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 David | Age | Birth yr |
|---|---|---|---|---|
| Joan Clark | Daughter | — | 10 | ~1930 |
| David Clark | Son | — | 8 | ~1932 |
| Sabina Clark | Spouse | — | 31 | ~1909 |
| David Clark | Head | — | 33 | ~1907 |
Census Appearances
1920
Philadelphia, Pennsylvania
Other, age 12
Philadelphia, Pennsylvania · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | David |
| Relationship to Head | Grand son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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
Philadelphia, Pennsylvania
Other, age 23
Philadelphia, Pennsylvania · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | David |
| Relationship to Head | Son-in-law |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 18 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Chauffeur |
| Industry | Taxi Cab |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Head, age 33
Philadelphia-County, Pennsylvania · implied b. ~1907 — 4 household members
| Surname | Clark |
| Given Name | David |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | Crane operator |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | 8 |
| 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 David Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
David Clark
Head · 1940 · age 33 · b. ~1907 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03732-00310)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Patricia Muller | 11 | Daughter | — | Pennsylvania |
| 42 | Francis Muller | 8 | Son | — | Pennsylvania |
| 43 | Daniel Muller | 3 | Son | — | Pennsylvania |
| 44 | Thomas Milligan | 24 | Head | Bricklayer | Pennsylvania |
| 45 | Alice D. Milligan | 22 | Wife | — | New Jersey |
| 46 | Thomas Jr. Milligan | 3 | Son | — | Pennsylvania |
| 47 | Augusta Westman | 47 | Head | — | New York |
| 48 | Albert J. Haughney | 47 | Lodger | Truck Driver | Pennsylvania |
| 49 | Owen Sr. Moyle | 49 | Head | — | Pennsylvania |
| 50 | Anna Moyle | 48 | Wife | — | Pennsylvania |
| 51 | Dorothy Moyle | 18 | Daughter | Housework | Pennsylvania |
| 52 | Gertrude Moyle | 16 | Daughter | — | Pennsylvania |
| 53 | Anna Moyle | 14 | Daughter | — | Pennsylvania |
| 54 | Catherine Moyle | 12 | Daughter | — | Pennsylvania |
| 55 | John Moyle | 11 | Son | — | Pennsylvania |
| 56 | Margaret Moyle | 8 | Daughter | — | Pennsylvania |
| 57 | David Clark THIS PERSON | 33 | Head | Crane Operator | Pennsylvania |
| 58 | Sabina Clark | 31 | Wife | — | Maryland |
| 59 | Joan Clark | 10 | Daughter | — | Pennsylvania |
| 60 | David Clark | 8 | Son | — | Pennsylvania |
| 61 | Owen Jr. Doyle | 27 | Head | Laborer | Pennsylvania |
| 62 | Nora Doyle | 24 | Wife | — | Pennsylvania |
| 63 | Marie Anne Doyle | 5 | Daughter | — | Pennsylvania |
| 64 | Charles Speir | 28 | Head | Foreman | Pennsylvania |
| 65 | Eva Speir | 33 | Wife | — | Pennsylvania |
| 66 | Suzanne Speir | 8 | Daughter | — | Pennsylvania |
| 67 | Charles Speir | 4 | Son | — | Pennsylvania |
| 68 | Janette Speir | 0 | Daughter | — | Pennsylvania |
| 69 | Edward Hill | 53 | Head | Truck Driver | Ireland |
| 70 | Elizabeth Hill | 53 | Wife | — | N. Ireland |
| 71 | Anna Hill | 28 | Daughter | Stringer | Pennsylvania |
| 72 | Edna Hill | 23 | Daughter | Clerk | Pennsylvania |
| 73 | George Keeper | 51 | Head | Laborer | Pennsylvania |
| 74 | Eva Keeper | 52 | Wife | — | Pennsylvania |
| 75 | Albert Keeper | 21 | Son | New Worker | Pennsylvania |
| 76 | Kenneth Keeper | 20 | Son | Helper | Pennsylvania |
| 77 | Doris Keeper | 17 | Daughter | New Worker | Pennsylvania |
| 78 | Donald Keeper | 8 | Son | — | Pennsylvania |
| 79 | Elsie Bickel | 47 | Head | — | Pennsylvania |
| 80 | George Bickel | 26 | Son | Engraver | 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)