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William Jacobs — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Jacobs across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 11-person household.
Age 14
b. ~1926
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Jacobs |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Castle Shannon Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Castle Shannon Borough |
| Est. Birth Year | ~1926 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Merda Jacobs | Daughter | — | 29 | ~1911 |
| Frances Jacobs | Daughter | — | 18 | ~1922 |
| Florence Jacobs | Daughter | — | 27 | ~1913 |
| Charles Jacobs | Head | — | 52 | ~1888 |
| William Jacobs | Son | — | 14 | ~1926 |
| Russell Jacobs | Son | — | 21 | ~1919 |
| Edward Jacobs | Son | — | 17 | ~1923 |
| Lavern Jacobs | Son | — | 30 | ~1910 |
| Sterling Jacobs | Son | — | 19 | ~1921 |
| Loyd Jacobs | Son | — | 12 | ~1928 |
| Mabel Jacobs | Spouse | — | 52 | ~1888 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 3
Allegheny, Pennsylvania · implied b. ~1927
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Jacobs |
| Given Name | William R. |
| 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 |
1940
Allegheny-County, Pennsylvania
Son, age 14
Allegheny-County, Pennsylvania · implied b. ~1926 — 11 household members
| Surname | Jacobs |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Castle Shannon Borough |
| 1935 Residence (County) | Allegheny |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 William Jacobs across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Jacobs
Son · 1940 · age 14 · b. ~1926 · Pennsylvania
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Sibling
Russell Jacobs
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Jacobs
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sterling Jacobs
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loyd Jacobs
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Merda Jacobs
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Jacobs
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Jacobs
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lavern Jacobs
Sibling · 1940 · age 30
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-t0627-03400-00037)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John M. Gardill | 32 | Head | Medical Doctor | Pennsylvania |
| 2 | Isabella Gardill | 26 | Wife | — | Pennsylvania |
| 3 | John Jr. Gardill | 2 | Son | — | Pennsylvania |
| 4 | Henry Emiger | 57 | Head | Motorman | Pennsylvania |
| 5 | May Emiger | 50 | Wife | — | England |
| 6 | William Emiger | 26 | Son | Attendant | Pennsylvania |
| 7 | Stanley F. Stephan | 30 | Head | Stenographer | Pennsylvania |
| 8 | Bernice A. Stephan | 31 | Wife | — | Pennsylvania |
| 9 | Philip Stephan | 3 | Son | — | Pennsylvania |
| 10 | Charles Jacobs | 52 | Head | Superintendent | Pennsylvania |
| 11 | Mabel May Jacobs | 52 | Wife | — | Pennsylvania |
| 12 | Lavern Jacobs | 30 | Son | Hammerman | Pennsylvania |
| 13 | Merda Jacobs | 29 | Daughter | Waitress | Pennsylvania |
| 14 | Florence Jacobs | 27 | Daughter | Maid | Pennsylvania |
| 15 | Russell Jacobs | 21 | Son | New Worker | Pennsylvania |
| 16 | Sterling Jacobs | 19 | Son | Blind Cleaner | Pennsylvania |
| 17 | Frances Jacobs | 18 | Daughter | — | Pennsylvania |
| 18 | Edward Jacobs | 17 | Son | — | Pennsylvania |
| 19 | William Jacobs THIS PERSON | 14 | Son | — | Pennsylvania |
| 20 | Loyd Jacobs | 12 | Son | — | Pennsylvania |
| 21 | Fred J. Nolle | 31 | Head | Laborer | Pennsylvania |
| 22 | Marcella Nolle | 29 | Wife | — | Pennsylvania |
| 23 | William E. Everline | 51 | Head | Machinist | Pennsylvania |
| 24 | Stella M. Everline | 45 | Wife | — | Ohio |
| 25 | Richard Everline | 12 | Son | — | Pennsylvania |
| 26 | Joseph J. Harris | 41 | Head | Machinist | Pennsylvania |
| 27 | Elizabeth M. Harris | 41 | Wife | — | Pennsylvania |
| 28 | Joseph A. Harris | 7 | Son | — | Pennsylvania |
| 29 | Charles E. Miller | 33 | Head | Laborer | Pennsylvania |
| 30 | Victoria Miller | 32 | Wife | — | Pennsylvania |
| 31 | Dolores May Miller | 12 | Daughter | — | Pennsylvania |
| 32 | Catherine Lindner | 33 | Head | — | Pennsylvania |
| 33 | William Lindner | 14 | Son | — | Pennsylvania |
| 34 | June Lindner | 12 | Daughter | — | Pennsylvania |
| 35 | Charles Heidelmeier | 41 | Lodger | Salesman | Pennsylvania |
| 36 | George B. Ladd | 38 | Head | Laborer | Tennessee |
| 37 | Alta Ladd | 37 | Wife | — | Pennsylvania |
| 38 | William B. Ladd | 10 | Son | — | Pennsylvania |
| 39 | Theresa Winkler | 72 | Head | — | Hungary |
| 40 | Joseph Winkler | 42 | Son | Laborer | 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)