MC
Marie Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Marie Clark across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Clark |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Additional Details | |
| Occupation | Nurse |
| Industry | Hospital |
| Class of Worker | PW |
| Income (1939) | 150 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Nurse |
| Township / Ward | Phila |
| Est. Birth Year | ~1921 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marie | Age | Birth yr |
|---|---|---|---|---|
| Mary Clark | Other | — | 42 | ~1898 |
| Terrence Clark | Son | — | 21 | ~1919 |
| Marie Clark | Daughter | — | 19 | ~1921 |
| Kevin Clark | Son | — | 14 | ~1926 |
| Ellie Clark | Spouse | — | 48 | ~1892 |
| Catherine Clark | Other | — | 42 | ~1898 |
| Terrence Clark | Head | — | 48 | ~1892 |
| Thomas Clark | Son | — | 12 | ~1928 |
| James Clark | Son | — | 17 | ~1923 |
Census Appearances
1930
Philadelphia, Pennsylvania
Daughter, age 9
Philadelphia, Pennsylvania · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | Maria |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | Northern Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Philadelphia-County, Pennsylvania
Daughter, age 19
Philadelphia-County, Pennsylvania · implied b. ~1921 — 9 household members
| Surname | Clark |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Occupation | Nurse |
| Industry | Hospital |
| Class of Worker | PW |
| Income (1939) | 150 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Marie Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marie Clark
Daughter · 1940 · age 19 · b. ~1921 · Pennsylvania
★ You are viewing this record
Sibling
Terrence Clark
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Clark
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Clark
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kevin Clark
Sibling · 1940 · age 14
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 — 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-t0627-03699-00056)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen Garrison | 63 | Mother | — | Penna |
| 42 | William Miller | 44 | Head | Policeman | Penna |
| 43 | Adalie Miller | 46 | Wife | — | Penna |
| 44 | Helen Miller | 25 | Daughter | Cook | Penna |
| 45 | William Jr. Miller | 19 | Son | — | Penna |
| 46 | Gladys Miller | 16 | Daughter | — | Penna |
| 47 | Dorothy Miller | 13 | Daughter | — | Penna |
| 48 | Richard Miller | 6 | Son | — | Penna |
| 49 | Andrew Clark | 28 | Brother-in-law | Crane Operator | New Jersey |
| 50 | Addie Clark | 25 | Daughter | — | Penna |
| 51 | Richard Clark | 1 | Son | — | Penna |
| 52 | Frederick Rholly | 74 | Lodger | — | Penna |
| 53 | William Sheppard | 65 | Head | Gardner | Ireland |
| 54 | Alfred Guttman | 65 | Head | Blacksmith | Germany |
| 55 | John Nutter | 62 | Lodger | Gardner | Penna |
| 56 | William Libby | 53 | Head | Clerk | Penna |
| 57 | Sophia Libby | 45 | Wife | — | Penna |
| 58 | Philip Libby | 69 | Brother | Holster | Ireland |
| 59 | George Morrow | 64 | Head | Baker | Tennessee |
| 60 | Cornelia Morrow | 59 | Wife | — | Georgia |
| 61 | George Morrow | 40 | Son | — | Georgia |
| 62 | Dorothy Morrow | 32 | Daughter | Typist | Tennessee |
| 63 | — | None | — | — | — |
| 64 | — | None | — | — | — |
| 65 | Harry Corning | 48 | Head | Engineer | Penna |
| 66 | Margaret Corning | 40 | Wife | — | Penna |
| 67 | Margaret J. Corning | 18 | Daughter | — | Penna |
| 68 | Harry Jr. Corning | 12 | Son | — | Penna |
| 69 | William Corning | 6 | Son | — | Penna |
| 70 | Terrence Clark | 48 | Head | Engineer | Irish Free State |
| 71 | Ellie Clark | 48 | Wife | — | Irish Free State |
| 72 | Terrence M. Clark | 21 | Son | New Worker | New Jersey |
| 73 | Marie Clark THIS PERSON | 19 | Daughter | Nurse | New Jersey |
| 74 | James Clark | 17 | Son | — | Penna |
| 75 | Kevin Clark | 14 | Son | — | Penna |
| 76 | Thomas Clark | 12 | Son | — | Penna |
| 77 | Mary Clark | 42 | Sister | Nurse | Irish Free State |
| 78 | Catherine Clark | 42 | Sister | — | Irish Free State |
| 79 | William Whitman | 65 | Head | Inspector | Penna |
| 80 | Mary Whitman | 60 | Wife | — | Penna |
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)