GC
Grace Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Grace Clark across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Catherine & Richard — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Clark |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Coal Yard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Stenographer |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1917 |
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 Grace | Age | Birth yr |
|---|---|---|---|---|
| Albert Clark | Son | — | 21 | ~1919 |
| Catherine Clark | Spouse | — | 47 | ~1893 |
| Joseph Clark | Son | — | 16 | ~1924 |
| Grace Clark | Daughter | — | 23 | ~1917 |
Census Appearances
1920
Philadelphia, Pennsylvania
Daughter, age 2
Philadelphia, Pennsylvania · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Grace E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Daughter, age 12
Philadelphia, Pennsylvania · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Daughter, age 23
Philadelphia-County, Pennsylvania · implied b. ~1917 — 4 household members
| Surname | Clark |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | Stenographer |
| Industry | Coal Yard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 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 Grace Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Catherine Clark (~0.92 confidence) and father Richard Clark (~0.92 confidence) and father Richard Clark (~0.92 confidence) and mother Mary Clark (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Catherine Clark
b. ~1893
Source mother
● Household
· direct · ~0.92
Father
Richard Clark
b. ~1896
Source father
● Household
· direct · ~0.92
Father
Richard Clark
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Mary Clark
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Grace Clark
Daughter · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Albert Clark
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph 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 — 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-t0627-03726-00845)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Catherine Clark | 47 | Wife | H | Pennsylvania |
| 2 | Grace Clark THIS PERSON | 23 | Daughter | Stenographer | Pennsylvania |
| 3 | Albert Clark | 21 | Son | Clerk | Pennsylvania |
| 4 | Joseph Clark | 16 | Son | S | Pennsylvania |
| 5 | Samuel Utt | 45 | Head | Machinist | Pennsylvania |
| 6 | Phoebe Utt | 50 | Wife | H | Pennsylvania |
| 7 | Frances Utt | 22 | Daughter | Clerk | Pennsylvania |
| 8 | John Blazer | 14 | Nephew | S | Pennsylvania |
| 9 | Margaret Schandel | 69 | Head | H | Pennsylvania |
| 10 | Harry Schandel | 33 | Son | Clerk | Pennsylvania |
| 11 | Roland Adams | 32 | Head | Contractor | Pennsylvania |
| 12 | Lillian Adams | 25 | Wife | H | Pennsylvania |
| 13 | Charles Adams | 3 | Son | — | Pennsylvania |
| 14 | William Adams | 2 | Son | — | Pennsylvania |
| 15 | Alexander W. Shuster | 65 | Head | U | Pennsylvania |
| 16 | Margaret Shuster | 53 | Wife | H | Pennsylvania |
| 17 | Winnifred Shuster | 35 | Daughter | U | Pennsylvania |
| 18 | Richard Doerr | 34 | Head | Knitter | Pennsylvania |
| 19 | Stella Doerr | 32 | Wife | H | Pennsylvania |
| 20 | Richard Jr. Doerr | 10 | Son | S | Pennsylvania |
| 21 | John Wagner | 67 | Father-in-law | U | Pennsylvania |
| 22 | Mabel Wagner | 62 | Mother-in-law | H | Pennsylvania |
| 23 | Zachary Holbrook | 56 | Head | Janitor | Pennsylvania |
| 24 | Ada Holbrook | 50 | Wife | H | Pennsylvania |
| 25 | Kitty Holbrook | 55 | Sister | Milliner | Pennsylvania |
| 26 | Richard Schneider | 72 | Head | Baker | Germany |
| 27 | Mary Schneider | 72 | Wife | H | Germany |
| 28 | Margaret Trehr | 81 | Lodger | U | Germany |
| 29 | Louis Haase | 40 | Head | Knitter | Germany |
| 30 | Louise Haase | 38 | Wife | H | Germany |
| 31 | Annetta Haase | 15 | Daughter | S | Germany |
| 32 | Frederick Filz | 42 | Head | Sheet Metal Worker | Pennsylvania |
| 33 | Caroline Filz | 40 | Wife | Mender | Pennsylvania |
| 34 | Gertrude Filz | 16 | Daughter | S | Pennsylvania |
| 35 | Frederick Filz | 12 | Son | S | Pennsylvania |
| 36 | Max Traupner | 41 | Head | Knitter | Germany |
| 37 | Fanny Traupner | 39 | Wife | Mender | Germany |
| 38 | Eleanor Traupner | 11 | Daughter | S | Pennsylvania |
| 39 | Freda Fredenon | 51 | Lodger | Cleaner | Pennsylvania |
| 40 | Howard F. Adams | 62 | Head | Contractor | Pennsylvania |
Pedigree Summary
Grace + 2 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)