WF
William Frederick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clarion-County, Pennsylvania
Our Model Tree links this William Frederick across the 1930 and 1940 US Censuses in Clarion-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1896), then head of a 6-person household.
Age 44
b. ~1896
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clarion-County, Pennsylvania |
| Surname | Frederick |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Elk |
| Additional Details | |
| Occupation | Driller |
| Industry | Oil well |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 960 |
| Highest Grade | 8 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Driller |
| Township / Ward | Elk |
| Est. Birth Year | ~1896 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Norma Frederick | Daughter | — | 8 | ~1932 |
| Clyde Frederick | Son | — | 16 | ~1924 |
| Donald Frederick | Son | — | 18 | ~1922 |
| William Frederick | Head | — | 44 | ~1896 |
| Jane Frederick | Spouse | — | 41 | ~1899 |
| Althea Frederick | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Clarion, Pennsylvania
Head, age 34
Clarion, Pennsylvania · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frederick |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 23 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Driller |
| Industry | Oil & Gas |
| Class of Worker | 78XV |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Clarion-County, Pennsylvania
Head, age 44
Clarion-County, Pennsylvania · implied b. ~1896 — 6 household members
| Surname | Frederick |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Elk |
| Occupation | Driller |
| Industry | Oil well |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 960 |
| Highest Grade | 8 |
| 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 William Frederick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Frederick
Head · 1940 · age 44 · b. ~1896 · 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 — Clarion-County, Pennsylvania
Open full size
1940 US Federal Census — Clarion-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03468-00308)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Herman M Gaulwell | 40 | Head | H | Pennsylvania |
| 42 | Paul E Swartzfager | 29 | Head | H | Pennsylvania |
| 43 | Bernice M Swartzfager | 25 | Wife | — | Pennsylvania |
| 44 | Clifford E Swartzfager | 4 | Son | — | Pennsylvania |
| 45 | Virginia M Swartzfager | 2 | Daughter | — | Pennsylvania |
| 46 | James H Wensel | 32 | Head | Laborer | Pennsylvania |
| 47 | Margaret O Wensel | 33 | Wife | — | Pennsylvania |
| 48 | Robert L Wensel | 3 | Son | — | Pennsylvania |
| 49 | John B Wood | 84 | Head | Proprietor | Pennsylvania |
| 50 | Mary E Wood | 80 | Wife | — | Pennsylvania |
| 51 | Fay E Ropp | 38 | Daughter | — | Pennsylvania |
| 52 | Harold R Ropp | 14 | Grandson | — | Pennsylvania |
| 53 | Phyllis J Ropp | 12 | Granddaughter | — | Pennsylvania |
| 54 | Melvin R Young | 36 | Head | Laborer | Pennsylvania |
| 55 | Anna S Young | 31 | Wife | — | Pennsylvania |
| 56 | Robert N Young | 67 | Head | Proprietor | Pennsylvania |
| 57 | Laura L Young | 62 | Wife | — | Pennsylvania |
| 58 | Andrew C Young | 73 | Head | Proprietor | Pennsylvania |
| 59 | Ida M Young | 72 | Wife | — | Pennsylvania |
| 60 | Harry H Young | 49 | Son | Miner | Pennsylvania |
| 61 | Mabel M Young | 15 | Granddaughter | — | Pennsylvania |
| 62 | Irene R Young | 13 | Granddaughter | — | Pennsylvania |
| 63 | William Frederick THIS PERSON | 44 | Head | Driller | Pennsylvania |
| 64 | Jane H Frederick | 41 | Wife | — | Pennsylvania |
| 65 | Donald C Frederick | 18 | Son | New Worker | Pennsylvania |
| 66 | Clyde E Frederick | 16 | Son | — | Pennsylvania |
| 67 | Althea J Frederick | 9 | Daughter | — | Pennsylvania |
| 68 | Norma J Frederick | 8 | Daughter | — | Pennsylvania |
| 69 | Frank H Hensmith | 63 | Head | Proprietor | Pennsylvania |
| 70 | Clara M Hensmith | 61 | Wife | — | Pennsylvania |
| 71 | Chalmer G Hensmith | 28 | Son | Teacher | Pennsylvania |
| 72 | Irene A Hensmith | 25 | Daughter-in-law | — | Pennsylvania |
| 73 | Hunter C Hensmith | 4 | Grandson | — | Pennsylvania |
| 74 | Frank W Etzel | 24 | Head | Laborer | Pennsylvania |
| 75 | Evelyne M Etzel | 22 | Wife | — | Pennsylvania |
| 76 | William J Etzel | 1 | Son | — | Pennsylvania |
| 77 | John H Matter | 71 | Head | Owner | Pennsylvania |
| 78 | Mary M Matter | 33 | Wife | — | Pennsylvania |
| 79 | Bertha J Matter | 14 | Daughter | — | Pennsylvania |
| 80 | Raymond H Matter | 11 | Son | — | 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)