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William Long — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mercer-County, Pennsylvania
Our Model Tree links this William Long across the 1920, 1930 and 1940 US Censuses in Mercer-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Clifford & Grace — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Pennsylvania |
| Surname | Long |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Greenville |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Occupation | Salesman & Deliveryman |
| Industry | Retail Dairy |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 936 |
| Highest Grade | Hs 4 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Salesman & Deliveryman |
| Township / Ward | Hempfield Twp |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Louise Long | Daughter | — | 15 | ~1925 |
| Clifford Long | Head | — | 43 | ~1897 |
| William Long | Son | — | 21 | ~1919 |
| Richard Long | Son | — | 11 | ~1929 |
| Donald Long | Son | — | 8 | ~1932 |
| Grace Long | Spouse | — | 41 | ~1899 |
Census Appearances
1920
Mercer, Pennsylvania
Son, age 1
Mercer, Pennsylvania · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Mercer, Pennsylvania
Son, age 11
Mercer, Pennsylvania · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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
Mercer-County, Pennsylvania
Son, age 21
Mercer-County, Pennsylvania · implied b. ~1919 — 6 household members
| Surname | Long |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Greenville |
| 1935 Residence (County) | Mercer |
| Occupation | Salesman & Deliveryman |
| Industry | Retail Dairy |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 936 |
| Highest Grade | Hs 4 |
| 1935 Residence | Pennsylvania |
| 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 Long across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clifford Long (~0.92 confidence) and mother Grace Long (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clifford Long
b. ~1898
Source father
● Household
· direct · ~0.92
Mother
Grace Long
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Long
Son · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
Louise Long
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Long
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Long
Sibling · 1940 · age 8
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 — Mercer-County, Pennsylvania
Open full size
1940 US Federal Census — Mercer-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03571-00215)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Fischer | 8 | Son | — | Pennsylvania |
| 2 | James Payton | 5 | Nephew | — | Pennsylvania |
| 3 | Harry Locke | 37 | Head | Laborer | Pennsylvania |
| 4 | Carrie Locke | 36 | Wife | — | Pennsylvania |
| 5 | Richard Locke | 12 | Son | — | Pennsylvania |
| 6 | Frank Locke | 10 | Son | — | Pennsylvania |
| 7 | Earnest Locke | 8 | Son | — | Pennsylvania |
| 8 | Harley Locke | 6 | Son | — | Pennsylvania |
| 9 | Ralph W. Mowry | 34 | Head | Laborer | Pennsylvania |
| 10 | Sarah E. Mowry | 31 | Wife | — | Pennsylvania |
| 11 | Ruth Mowry | 7 | Daughter | — | Pennsylvania |
| 12 | Clifford L. Long | 43 | Head | Boiler Maker | Pennsylvania |
| 13 | Grace Long | 41 | Wife | — | Pennsylvania |
| 14 | William H. Long THIS PERSON | 21 | Son | Salesman & Deliveryman | Pennsylvania |
| 15 | Louise Long | 15 | Daughter | — | Pennsylvania |
| 16 | Richard H. Long | 11 | Son | — | Pennsylvania |
| 17 | Donald E. Long | 8 | Son | — | Pennsylvania |
| 18 | Lee O. Crummy | 68 | Head | Farmer | Pennsylvania |
| 19 | Emma Crummy | 70 | Wife | — | Pennsylvania |
| 20 | Will Gillingham | 17 | Hired hand | — | Pennsylvania |
| 21 | William M. Fischer | 70 | Head | Farmer | Denmark |
| 22 | Anna O. Fischer | 60 | Wife | — | Pennsylvania |
| 23 | Olive Fischer | 18 | Daughter | Housework | Pennsylvania |
| 24 | Guy H. Young | 49 | Head | Farmer | Pennsylvania |
| 25 | Lavina Young | 46 | Wife | — | Pennsylvania |
| 26 | Marian Young | 21 | Daughter | — | Pennsylvania |
| 27 | Robert Young | 19 | Son | — | Pennsylvania |
| 28 | William Young | 15 | Son | — | Pennsylvania |
| 29 | Dora J. Young | 7 | Daughter | — | Pennsylvania |
| 30 | Foster G. Altman | 35 | Head | Yard Foreman | Ohio |
| 31 | Leona Altman | 36 | Wife | — | Ohio |
| 32 | Elaine Altman | 11 | Daughter | — | Pennsylvania |
| 33 | Wayne Altman | 4 | Son | — | Pennsylvania |
| 34 | William H. Lloyd | 63 | Head | Farmer | Pennsylvania |
| 35 | Sada E. Lloyd | 64 | Wife | — | Pennsylvania |
| 36 | Clarence Lloyd | 33 | Son | Machine Operator | Pennsylvania |
| 37 | Hazel M. Lloyd | 36 | Daughter-in-law | — | Pennsylvania |
| 38 | Harry E. Reed | 56 | Head | Plumber | Pennsylvania |
| 39 | Lucy Reed | 40 | Wife | — | Pennsylvania |
| 40 | Willis P. Reed | 70 | Brother | — | Ohio |
Pedigree Summary
William + 3 siblings
Gen 1 · 2 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)