HC
Helen Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Helen Clark across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Andrew & Catherine — first a daughter (b.~1917), then head of a 5-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 | Helen |
| 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 | Clerk |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 450 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Clark | Daughter | — | 23 | ~1917 |
| Andrew Clark | Head | — | 58 | ~1882 |
| Kenneth Lafond | Other | — | 31 | ~1909 |
| Andrew Clark | Son | — | 28 | ~1912 |
| Catherine Clark | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Philadelphia, Pennsylvania
Daughter, age 2
Philadelphia, Pennsylvania · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Helen M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Daughter, age 13
Philadelphia, Pennsylvania · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Helen M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| 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 — 5 household members
| Surname | Clark |
| Given Name | Helen |
| 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 | Clerk |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 450 |
| Highest Grade | H 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 Helen Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Clark (~0.92 confidence) and mother Catherine Clark (~0.92 confidence) and father Andrew Clark (~0.92 confidence) and father Robert Clark (~0.92 confidence) and mother Fredricka Clark (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Clark
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Catherine Clark
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Andrew Clark
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Robert Clark
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Fredricka Clark
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Clark
Daughter · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Andrew Clark
Sibling · 1940 · age 28
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-t0627-03705-00229)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William R. Todd | 50 | Head | Linotype Operator | Pennsylvania |
| 2 | Anna E. Todd | 48 | Wife | — | Pennsylvania |
| 3 | Wesley J. Jones | 36 | Head | Buyer | Colorado |
| 4 | Hilda Jones | 36 | Wife | — | Pennsylvania |
| 5 | Betty Jane Jones | 10 | Daughter | — | Pennsylvania |
| 6 | Wilbur Bush | 52 | Head | Salesman | Pennsylvania |
| 7 | Jessie Bush | 46 | Wife | — | Pennsylvania |
| 8 | Lola Bush | 15 | Daughter | — | Pennsylvania |
| 9 | James Kaine | 62 | Lodger | Printer | Maryland |
| 10 | Elmer H. Schmalz | 32 | Head | Dyer | Pennsylvania |
| 11 | Louise C. Schmalz | 33 | Wife | — | Pennsylvania |
| 12 | Joyce Schmalz | 5 | Daughter | — | Pennsylvania |
| 13 | Charles G. Davies | 36 | Head | Buyer | Pennsylvania |
| 14 | Marie H. Davies | 35 | Wife | Stenographer | Pennsylvania |
| 15 | Raymond Hart | 43 | Head | Salesman | Pennsylvania |
| 16 | Margaret Hart | 41 | Wife | Clerk | Pennsylvania |
| 17 | John Mc Garrity | 70 | Lodger | — | North Ireland |
| 18 | John W. Mullineaux | 42 | Head | Bookkeeper | Pennsylvania |
| 19 | Edna F. Mullineaux | 39 | Wife | Saleslady | Pennsylvania |
| 20 | John W. Jr. Mullineaux | 15 | Son | — | Pennsylvania |
| 21 | William Zitterman | 22 | Son-in-law | Type Setter | New Jersey |
| 22 | Dorothy E. Zitterman | 19 | Daughter | Photo Finisher | Pennsylvania |
| 23 | Cecil H. Gorton | 53 | Head | Clerk | New York |
| 24 | Florence Gorton | 48 | Wife | — | Pennsylvania |
| 25 | Virginia Gorton | 16 | Daughter | — | Pennsylvania |
| 26 | Alberta Gorton | 16 | Daughter | — | Pennsylvania |
| 27 | Virginia Heckman | 83 | Mother-in-law | — | Pennsylvania |
| 28 | William Sharkey | 28 | Head | Printer | Pennsylvania |
| 29 | Elizabeth Sharkey | 26 | Wife | Bookkeeper | Pennsylvania |
| 30 | John Lendvay | 54 | Head | Repairing | Hungary |
| 31 | Theresa Lendvay | 59 | Wife | — | Hungary |
| 32 | Andrew J. Clark | 58 | Head | Plumber | Pennsylvania |
| 33 | Catherine Clark | 58 | Wife | — | Pennsylvania |
| 34 | Andrew J. Clark | 28 | Son | Accountant | Pennsylvania |
| 35 | Helen Clark THIS PERSON | 23 | Daughter | Clerk | Pennsylvania |
| 36 | Kenneth Lafond | 31 | Lodger | Auditor | Michigan |
| 37 | Bertram Mercer | 44 | Head | Mgr | Pennsylvania |
| 38 | Edna F. Mercer | 45 | Wife | — | Pennsylvania |
| 39 | Frances Mercer | 25 | Daughter | Teacher | Pennsylvania |
| 40 | Harold S. Lyle | 39 | Head | Foreman | Pennsylvania |
Pedigree Summary
Helen + 1 sibling
Gen 1 · 5 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)