CS
Charles Shaffer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Charles Shaffer across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1898), then head of a 6-person household.
Age 42
b. ~1898
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Shaffer |
| Given Name | Charles L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Bridge Assembler |
| Industry | Bridge Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1107 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Bridge Assembler |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1898 |
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 Charles | Age | Birth yr |
|---|---|---|---|---|
| Josephine Shaffer | Head | — | 70 | ~1870 |
| Schola Shaffer | Son | — | 31 | ~1909 |
| Merle Shaffer | Daughter | — | 43 | ~1897 |
| Charles Shaffer | Son | — | 42 | ~1898 |
| Gerard Shaffer | Son | — | 46 | ~1894 |
| Elva Shaffer | Daughter | — | 33 | ~1907 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 33
Allegheny, Pennsylvania · implied b. ~1897 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaffer |
| Given Name | Charles L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Construction |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 42
Allegheny-County, Pennsylvania · implied b. ~1898 — 6 household members
| Surname | Shaffer |
| Given Name | Charles L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | Bridge Assembler |
| Industry | Bridge Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1107 |
| Highest Grade | No 8 |
| 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 Charles Shaffer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Charles Shaffer
Son · 1940 · age 42 · b. ~1898 · Pennsylvania
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Sibling
Gerard Shaffer
Sibling · 1940 · age 46
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elva Shaffer
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Schola Shaffer
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Merle Shaffer
Sibling · 1940 · age 43
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
38 people indexed on this census page (nara:1940:m-t0627-03676-00005)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Paul Daniels | 4 | Son | — | Pennsylvania |
| 42 | Harold H Swoger | 39 | Head | Engineer | Pennsylvania |
| 43 | Marjorie E Swoger | 24 | Wife | Waitress | Ohio |
| 44 | Enumerated On Sheet 61 Line 42-43-44 Swoger | 2 | Son | Proprietor | Pennsylvania |
| 47 | Frank Carroll | 48 | Head | Plumbing Inspector | Pennsylvania |
| 48 | Mary Carroll | 39 | Wife | — | Pennsylvania |
| 49 | Frank Jr Carroll | 17 | Son | — | Pennsylvania |
| 50 | Walter Carroll | 16 | Son | — | Pennsylvania |
| 51 | Audrey Carroll | 12 | Daughter | — | Pennsylvania |
| 52 | Robert Carroll | 8 | Son | — | Pennsylvania |
| 53 | Shirley Carroll | 7 | Daughter | — | Pennsylvania |
| 54 | Harry Douglas | 30 | Head | Salesman | Pennsylvania |
| 55 | Ruth Douglas | 30 | Wife | Waitress | Germany |
| 56 | Hattie Rayer | 60 | Mother-in-law | — | Germany |
| 57 | James Downs | 23 | Brother-in-law | Proprietor | Pennsylvania |
| 58 | Loraine Downs | 21 | Sister-in-law | Waitress | Pennsylvania |
| 59 | Josephine Shaffer | 70 | Head | — | Pennsylvania |
| 60 | Gerard T Shaffer | 46 | Son | Structural Iron | Pennsylvania |
| 61 | Merle Elba Shaffer | 43 | Daughter | Checking Clerk | Pennsylvania |
| 62 | Charles L Shaffer THIS PERSON | 42 | Son | Bridge Assembler | Pennsylvania |
| 63 | Elva J Shaffer | 33 | Daughter | — | Pennsylvania |
| 64 | Schola C Jr Shaffer | 31 | Son | Structural Iron | Pennsylvania |
| 65 | John F Halbinger | 57 | Head | Truck Driver | Pennsylvania |
| 66 | Margaret Halbinger | 59 | Wife | — | Pennsylvania |
| 67 | John F Jr Halbinger | 29 | Son | Salesman | Pennsylvania |
| 68 | Kenneth W Halbinger | 26 | Son | Phone Order Clerk | Pennsylvania |
| 69 | Alfred Tester | 70 | Brother-in-law | — | Pennsylvania |
| 70 | Edward G Margolf | 47 | Head | Buyer | Pennsylvania |
| 71 | Florence Margolf | 58 | Wife | — | Pennsylvania |
| 72 | George A Slater | 25 | Head | Accountant'S Clerk | Pennsylvania |
| 73 | Ruth E Slater | 26 | Wife | — | Pennsylvania |
| 74 | Susanne Slater | 1 | Daughter | — | Pennsylvania |
| 75 | Daniel J Powers | 36 | Head | Time Clerk | Pennsylvania |
| 76 | Margaret Powers | 34 | Wife | Nurse | New York |
| 77 | William Reilly | 63 | Head | Electrical Superintendent | Pennsylvania |
| 78 | Rose K Reilly | 60 | Wife | — | Pennsylvania |
| 79 | Frank E Reilly | 41 | Nephew | Transformer Installer | Pennsylvania |
| 80 | Kathleen M Burrell | 73 | Head | — | New York State |
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)