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William Harrington — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Harrington across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Harrington |
| Given Name | William D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh city |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | Hs 3 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1923 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Rose Harrington | Daughter | — | 21 | ~1919 |
| Mary Harrington | Spouse | — | 45 | ~1895 |
| William Harrington | Head | — | 50 | ~1890 |
| William Harrington | Son | — | 17 | ~1923 |
| Madeline Harrington | Daughter | — | 23 | ~1917 |
| Mary Harrington | Daughter | — | 19 | ~1921 |
| John Harrington | Son | — | 12 | ~1928 |
| Irene Harrington | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 5
Allegheny, Pennsylvania · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Herrington |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 17
Allegheny-County, Pennsylvania · implied b. ~1923 — 8 household members
| Surname | Harrington |
| Given Name | William D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh city |
| 1935 Residence (County) | Allegheny |
| Highest Grade | Hs 3 |
| 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 William Harrington across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Harrington
Son · 1940 · age 17 · b. ~1923 · Pennsylvania
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Sibling
Madeline Harrington
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Harrington
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Harrington
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Harrington
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Harrington
Sibling · 1940 · age 19
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03670-00480)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Eula Mae Waddell | 14 | Daughter | — | Pennsylvania |
| 42 | George Waddell | 8 | Son | — | Pennsylvania |
| 43 | Peter H. Turrill | 46 | Head | Street Car Man | Pennsylvania |
| 44 | Effie D. Turrill | 47 | Wife | — | Pennsylvania |
| 45 | Herman Turrill | 17 | Son | — | Pennsylvania |
| 46 | Charles Turrill | 13 | Son | — | Pennsylvania |
| 47 | Martin Prezy | 56 | Head | Truck Helper | Pennsylvania |
| 48 | Johanna Prezy | 45 | Wife | Housework | Germany |
| 49 | Joseph H. Prezy | 16 | Son | — | Pennsylvania |
| 50 | Albert H. Dripps | 48 | Head | Inspector | Pennsylvania |
| 51 | Eletta Dripps | 47 | Wife | — | Pennsylvania |
| 52 | Albert Jr. Dripps | 21 | Son | New Worker | Pennsylvania |
| 53 | Joseph Dripps | 19 | Son | Errant Boy | Pennsylvania |
| 54 | Gertrude Dripps | 17 | Daughter | — | Pennsylvania |
| 55 | Raymond Dripps | 14 | Son | — | Pennsylvania |
| 56 | Margaret Dripps | 9 | Daughter | — | Pennsylvania |
| 57 | William J. Harrington | 50 | Head | Watchman | Pennsylvania |
| 58 | Mary H. Harrington | 45 | Wife | — | Pennsylvania |
| 59 | Madeline Harrington | 23 | Daughter | Typist | Pennsylvania |
| 60 | Rose Harrington | 21 | Daughter | Office Girl | Pennsylvania |
| 61 | Mary Harrington | 19 | Daughter | New Worker | Pennsylvania |
| 62 | William D. Harrington THIS PERSON | 17 | Son | — | Pennsylvania |
| 63 | Irene Harrington | 14 | Daughter | — | Pennsylvania |
| 64 | John Harrington | 12 | Son | — | Pennsylvania |
| 65 | Edward J. Sinclair | 41 | Head | Com. Chemist | England |
| 66 | Ester Sinclair | 40 | Wife | — | Pennsylvania |
| 67 | Robert Sinclair | 19 | Son | Stock Boy | Pennsylvania |
| 68 | Edward Iii Sinclair | 9 | Son | — | Pennsylvania |
| 69 | Samuel Sinclair | 3 | Son | — | Pennsylvania |
| 70 | Ellis H. Thompson | 48 | Head | Bagg. Man | Pennsylvania |
| 71 | Florence Thompson | 44 | Wife | — | Pennsylvania |
| 72 | Sivah Derman | 25 | Head | Sewer Man | Pennsylvania |
| 73 | Margaret Derman | 22 | Daughter | — | Pennsylvania |
| 74 | Arthur Derman | 1 | Son | — | Pennsylvania |
| 75 | Ends Here | None | Block | — | — |
| 76 | Michael Connolly | 45 | Head | Moving Man | Ireland |
| 77 | Elizabeth Connolly | 43 | Wife | — | Pennsylvania |
| 78 | William Connolly | 21 | Son | New Worker | Pennsylvania |
| 79 | Earl Connolly | 19 | Son | New Worker | Pennsylvania |
| 80 | Wallace Connolly | 17 | Son | — | Pennsylvania |
Related Census Records
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)