FC
Frank Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Frank Clark across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a son (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Clark |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Pipefitter |
| Industry | Paper Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1900 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Pipefitter |
| Township / Ward | Chester |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Thomas Clark | Head | — | 61 | ~1879 |
| Frank Clark | Son | — | 23 | ~1917 |
| Florence Clark | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Delaware, Pennsylvania
Son, age 3
Delaware, Pennsylvania · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Delaware, Pennsylvania
Son, age 14
Delaware, Pennsylvania · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Son, age 23
Delaware-County, Pennsylvania · implied b. ~1917 — 3 household members
| Surname | Clark |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Occupation | Pipefitter |
| Industry | Paper Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1900 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| 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 Frank Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Clark (~0.92 confidence) and father Thomas Clark (~0.92 confidence) and mother Florence Clark (~0.92 confidence) and mother Florence Clark (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Clark
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Thomas Clark
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Florence Clark
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Florence Clark
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Frank Clark
Son · 1940 · age 23 · b. ~1917 · 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-t0627-03487-00585)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ross Zeleznick | 4 | Son | — | Pennsylvania |
| 42 | Clarence J. Copper | 41 | Head | Machinist | Pennsylvania |
| 43 | Alice Copper | 37 | Wife | — | England |
| 44 | Margaret Copper | 21 | Daughter | New Worker | Pennsylvania |
| 45 | George Copper | 19 | Son | New Worker | Pennsylvania |
| 46 | Clarence L. Copper | 14 | Son | — | Pennsylvania |
| 47 | Harvey Fellenbaum | 26 | Head | Burner | Pennsylvania |
| 48 | Ruth Fellenbaum | 24 | Wife | — | Pennsylvania |
| 49 | Harvey Jr. Fellenbaum | 2 | Son | — | Pennsylvania |
| 50 | Sue Ryan | 38 | Head | — | Pennsylvania |
| 51 | Barbara Ryan | 10 | Daughter | — | Pennsylvania |
| 52 | William Ryan | 9 | Son | — | Pennsylvania |
| 53 | Elizabeth Ryan | 7 | Daughter | — | Pennsylvania |
| 54 | Jean Ryan | 3 | Daughter | — | Pennsylvania |
| 55 | William Dodds | 51 | Head | Stevedore | Pennsylvania |
| 56 | Ruth Dodds | 43 | Wife | — | Pennsylvania |
| 57 | Robert Dodds | 21 | Son | Store Room Boy | Pennsylvania |
| 58 | Richard Dodds | 17 | Son | — | Pennsylvania |
| 59 | Clare Dodds | 12 | Daughter | — | Pennsylvania |
| 60 | John Dodds | 4 | Son | — | Pennsylvania |
| 61 | Thomas Clark | 61 | Head | Plumber | Pennsylvania |
| 62 | Florence Clark | 60 | Wife | — | Pennsylvania |
| 63 | Frank Clark THIS PERSON | 23 | Son | Pipefitter | Pennsylvania |
| 64 | John Hausmann | 31 | Head | Pipefitter | Pennsylvania |
| 65 | Elizabeth Hausmann | 28 | Wife | — | Pennsylvania |
| 66 | John Hausmann | 11 | Son | — | Pennsylvania |
| 67 | Frederick Hausmann | 5 | Son | — | Pennsylvania |
| 68 | Myer Bachs | 53 | Head | Tailor | Russia |
| 69 | Theresa Bachs | 49 | Wife | — | Russia |
| 70 | Benjamin Bachs | 29 | Son | Salesman | Maryland |
| 71 | Bertha Bachs | 27 | Daughter | Tailor Helper | Maryland |
| 72 | Herman Bachs | 26 | Son | Salesman | Maryland |
| 73 | Isodore Bachs | 21 | Son | Salesman | Pennsylvania |
| 74 | Paul Bachs | 18 | Son | New Worker | Pennsylvania |
| 75 | Betty Bachs | 13 | Daughter | — | Pennsylvania |
| 76 | William B. Maden | 48 | Head | Salesman | Pennsylvania |
| 77 | Lydia Maden | 49 | Wife | Seamstress | Pennsylvania |
| 78 | Roy Miller | 36 | Son-in-law | Truck Driver | Virginia |
| 79 | Lavinia Miller | 21 | Daughter | — | Delaware |
| 80 | William Grand-Son Dougan | None | M | — | — |
Pedigree Summary
Frank
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)