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William Harper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this William Harper across the 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 13-person household.
Age 22
b. ~1918
Male
Son
Born: Georgia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Harper |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Laborer |
| Industry | W.P.A |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 800 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Occupation | Laborer |
| Township / Ward | Chester |
| Est. Birth Year | ~1918 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Norris Harper | Daughter | — | 6 | ~1934 |
| Junie Harper | Daughter | — | 14 | ~1926 |
| Catherine Harper | Daughter | — | 13 | ~1927 |
| Magnolia Harper | Daughter | — | 15 | ~1925 |
| William Harper | Head | — | 42 | ~1898 |
| Annie Gathen | Other | — | 58 | ~1882 |
| Jessie Harper | Son | — | 21 | ~1919 |
| William Harper | Son | — | 22 | ~1918 |
| James Harper | Son | — | 7 | ~1933 |
| Marion Harper | Son | — | 20 | ~1920 |
| Arby Harper | Son | — | 16 | ~1924 |
| Wesley Harper | Son | — | 10 | ~1930 |
| Bessie Harper | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Delaware, Pennsylvania
Son, age 12
Delaware, Pennsylvania · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Can Read/Write | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1940
Delaware-County, Pennsylvania
Son, age 22
Delaware-County, Pennsylvania · implied b. ~1918 — 13 household members
| Surname | Harper |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Occupation | Laborer |
| Industry | W.P.A |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 800 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 Harper across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Harper
Son · 1940 · age 22 · b. ~1918 · Pennsylvania
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Sibling
James Harper
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Harper
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Junie Harper
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Harper
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jessie Harper
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norris Harper
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wesley Harper
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Magnolia Harper
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arby Harper
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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03489-00010)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Maurice Hunt | 27 | Son | — | Pennsylvania |
| 43 | William Harper | 42 | Head | — | Georgia |
| 44 | Bessie Harper | 40 | Wife | Laundress | Georgia |
| 45 | William Harper THIS PERSON | 22 | Son | Laborer | Georgia |
| 46 | Jessie Harper | 21 | Son | Laborer | Georgia |
| 47 | Marion Harper | 20 | Son | Laborer | Georgia |
| 48 | Arby Harper | 16 | Son | — | Georgia |
| 49 | Wesley Harper | 10 | Son | — | Pennsylvania |
| 50 | James Harper | 7 | Son | — | Pennsylvania |
| 51 | Magnolia Harper | 15 | Daughter | — | Georgia |
| 52 | Junie Mae Harper | 14 | Daughter | — | Georgia |
| 53 | Catherine Harper | 13 | Daughter | — | Pennsylvania |
| 54 | Norris Harper | 6 | Daughter | — | Pennsylvania |
| 55 | Annie Gathen | 58 | Mother | Laundress | Georgia |
| 56 | Keeter Newman | 24 | Head | Laborer | Virginia |
| 57 | Essie Newman | 30 | Wife | — | Virginia |
| 58 | Adressa Newman | 3 | Daughter | — | Pennsylvania |
| 59 | Keeter Jr Newman | 2 | Son | — | Pennsylvania |
| 60 | Cornelius Newman | 1 | Son | — | Pennsylvania |
| 61 | Calvin Reeves | 32 | Head | Laborer | Georgia |
| 62 | Victoria Reeves | 26 | Wife | — | Pennsylvania |
| 63 | Betty Brown | 13 | Niece | — | Pennsylvania |
| 64 | Calden Roy | 34 | Head | Laborer | North Carolina |
| 65 | Nora Roy | 26 | Wife | Maid | North Carolina |
| 66 | Robert Roy | 29 | Brother | Stitcher | North Carolina |
| 67 | Machel Maze | 49 | Head | Laborer | Georgia |
| 68 | Grace Maze | 37 | Wife | — | Florida |
| 69 | Andrew Maze | 16 | Son | — | Pennsylvania |
| 70 | Magiline Maze | 10 | Daughter | — | Pennsylvania |
| 71 | James Maze | 14 | Son | — | Pennsylvania |
| 72 | Addie Maze | 12 | Daughter | — | Pennsylvania |
| 73 | Leroy Maze | 9 | Son | — | Pennsylvania |
| 74 | Freddie Maze | 4 | Son | — | Pennsylvania |
| 75 | Wilson Harper | 25 | Head | Laborer | Georgia |
| 76 | Clementine Harper | 21 | Wife | — | Maryland |
| 77 | Wilson Jr Harper | 2 | Son | — | Pennsylvania |
| 78 | Willard Harper | 1 | Son | — | Pennsylvania |
| 79 | Wilkins Garris | 49 | Head | Laborer | Tennessee |
| 80 | Estella Garris | 47 | Wife | — | Tennessee |
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)