WM
William Marshall — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Marshall across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Grace & Ephriam — first a son (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Marshall |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | civil engineer |
| Industry | public utility |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1822 |
| Highest Grade | No 12 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Civil Engineer |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Grace Marshall | Daughter | — | 36 | ~1904 |
| Rosemary Marshall | Daughter | — | 26 | ~1914 |
| Grace Marshall | Head | — | 60 | ~1880 |
| William Marshall | Son | — | 32 | ~1908 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 11
Allegheny, Pennsylvania · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Marshall |
| Given Name | William E |
| 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 | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 21
Allegheny, Pennsylvania · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Marshall |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Age at First Marriage | 21 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Teller |
| Industry | General Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 32
Allegheny-County, Pennsylvania · implied b. ~1908 — 4 household members
| Surname | Marshall |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | civil engineer |
| Industry | public utility |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1822 |
| Highest Grade | No 12 |
| 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 Marshall across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Grace Marshall (~0.92 confidence) and father Ephriam Marshall (~0.92 confidence) and mother Anna Marshall (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Grace Marshall
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Ephriam Marshall
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Anna Marshall
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Marshall
Son · 1940 · age 32 · b. ~1908 · Pennsylvania
★ You are viewing this record
Sibling
Grace Marshall
Sibling · 1940 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosemary Marshall
Sibling · 1940 · age 26
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-t0627-03662-00375)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | C. H. Whetzel | 52 | Head | Agent | Pennsylvania |
| 2 | Estella Whetzel | 44 | Wife | — | Pennsylvania |
| 3 | Peggy Lee Whetzel | 17 | Daughter | — | Pennsylvania |
| 4 | Margaret Ceras | 33 | Servant | Cook | Pennsylvania |
| 5 | Anne Matras | 19 | Servant | Chambermaid | Pennsylvania |
| 6 | John W. Riley | 75 | Head | — | Indiana |
| 7 | Emma P. Riley | 63 | Wife | — | Ohio |
| 8 | Grace Mckibbin | 71 | Head | — | Pennsylvania |
| 9 | Mary Mckibbin | 43 | Daughter | Teacher | Pennsylvania |
| 10 | Howard Opie | 42 | Head | Office Clerk | Pennsylvania |
| 11 | Jessie Opie | 42 | Wife | Social Worker | Pennsylvania |
| 12 | Martha Opie | 15 | Daughter | — | Pennsylvania |
| 13 | Louise Opie | 12 | Daughter | — | Pennsylvania |
| 14 | Therese Bartholl | 77 | Head | — | Germany |
| 15 | Fred Bartholl | 48 | Son | Chemist | Pennsylvania |
| 16 | Gertrude Bartholl | 44 | Daughter | Teacher | Pennsylvania |
| 17 | Louise Bartholl | 42 | Daughter | Teacher | Pennsylvania |
| 18 | Violet Duval | 38 | Wife | — | Pennsylvania |
| 19 | Theodore Lewis | 56 | Head | District Manager | Pennsylvania |
| 20 | Katherine Lewis | 56 | Wife | — | Pennsylvania |
| 21 | Henrietta Ab Lewis | 20 | Daughter | — | Pennsylvania |
| 22 | Sophie Hall | 24 | Servant | Maid | Pennsylvania |
| 23 | L. C. Feeney | 42 | Head | Salesman | Pennsylvania |
| 24 | Marion Feeney | 39 | Wife | — | Pennsylvania |
| 25 | Mary Feeney | 14 | Daughter | — | Pennsylvania |
| 26 | John D. Garrin | 46 | Head | Doctor | Pennsylvania |
| 27 | Caroline Garrin | 70 | Mother | — | Pennsylvania |
| 28 | Mildred Lisley | 42 | Servant | Maid | Florida |
| 29 | Anne Gallagher | 57 | Servant | Laundress | Northern Ireland |
| 30 | William Lemmenz | 43 | Head | Motor Manager | Holland |
| 31 | Elizabeth Dunbar | 51 | Head | Proprietor | Pennsylvania |
| 32 | Eleanor A. Dunbar | 27 | Daughter | Office Clerk | Pennsylvania |
| 33 | Iola Caufman | 36 | Servant | Servant | West Virginia |
| 34 | A. Sweeney Schran | 40 | Head | — | Pennsylvania |
| 35 | Lester Schran | 16 | Son | — | Pennsylvania |
| 36 | Anna Bowling | 60 | Servant | Maid | Ohio |
| 37 | Grace J. Marshall | 60 | Head | — | Pennsylvania |
| 38 | Grace E. Marshall | 36 | Daughter | Teacher | Pennsylvania |
| 39 | William Marshall THIS PERSON | 32 | Son | Civil Engineer | Pennsylvania |
| 40 | Rosemary Marshall | 26 | Daughter | Stenographer | Pennsylvania |
Pedigree Summary
William + 2 siblings
Gen 1 · 3 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)