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 William & Bertha — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Marshall |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Gas Station |
| Industry | Own Business |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 1100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Gas Station |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1912 |
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 |
|---|---|---|---|---|
| William Marshall | Head | — | 59 | ~1881 |
| Robert Marshall | Son | — | 18 | ~1922 |
| William Marshall | Son | — | 28 | ~1912 |
| Bertha Marshall | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 7
Allegheny, Pennsylvania · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Marshall |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 17
Allegheny, Pennsylvania · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Marschall |
| Given Name | William J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Apprentice |
| Industry | Printing office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 28
Allegheny-County, Pennsylvania · implied b. ~1912 — 4 household members
| Surname | Marshall |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | Gas Station |
| Industry | Own Business |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 1100 |
| Highest Grade | Hs 4 |
| 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 Marshall across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Marshall (~0.92 confidence) and mother Bertha Marshall (~0.92 confidence) and father William Marshall (~0.92 confidence) and mother Stella Marschall (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Marshall
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Bertha Marshall
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
William Marshall
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Stella Marschall
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Marshall
Son · 1940 · age 28 · b. ~1912 · Pennsylvania
★ You are viewing this record
Sibling
Robert Marshall
Sibling · 1940 · age 18
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-t0627-03670-00089)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Roup | 37 | Head | Fireman | Pennsylvania |
| 2 | Mary Roup | 29 | Wife | — | Pennsylvania |
| 3 | William Jr. Roup | 7 | Son | — | Pennsylvania |
| 4 | Thomas Roup | 1 | Son | — | Pennsylvania |
| 5 | Thomas S. Malone | 66 | Head | — | Pennsylvania |
| 6 | Nellie Malone | 65 | Wife | — | Pennsylvania |
| 7 | Isabelle Malone | 27 | Daughter | — | Pennsylvania |
| 8 | Charles Malone | 26 | Son | New Worker | Pennsylvania |
| 9 | Julia Malone | 24 | Daughter-in-law | — | Pennsylvania |
| 10 | William Malone | 30 | Son | Petrolman | Pennsylvania |
| 11 | Grace Ward | 76 | Sister-in-law | — | Pennsylvania |
| 12 | John W. Malone | 38 | Head | Laborer | Pennsylvania |
| 13 | Theda Malone | 37 | Wife | — | Pennsylvania |
| 14 | Doris Malone | 12 | Daughter | — | Pennsylvania |
| 15 | Thomas C. Poyle | 61 | Head | — | Pennsylvania |
| 16 | John Poyle | 71 | Brother | — | W. Virginia |
| 17 | Mary Poyle | 68 | Sister | — | Pennsylvania |
| 18 | Margaret Poyle | 58 | Sister | — | Pennsylvania |
| 19 | Milton N. Clark | 77 | Head | — | Maryland |
| 20 | Mary A. Clark | 64 | Wife | — | Maryland |
| 21 | John Hanes | 42 | Head | Laborer | Pennsylvania |
| 22 | Edith Hanes | 38 | Wife | — | Pennsylvania |
| 23 | John Jr. Hanes | 7 | Son | — | Pennsylvania |
| 24 | Ronald Hanes | 5 | Son | — | Pennsylvania |
| 25 | Theodore Boyce | 35 | Head | Policeman | Pennsylvania |
| 26 | Rose Boyce | 34 | Wife | — | Pennsylvania |
| 27 | Theodore Jr. Boyce | 3 | Son | — | Pennsylvania |
| 28 | Kyle Sullivan | 68 | Head | — | Pennsylvania |
| 29 | Joseph Mcdermott | 74 | Brother | — | Virginia |
| 30 | Aloysius Miller | 45 | Head | Fireman | Pennsylvania |
| 31 | Helen Miller | 41 | Wife | — | Pennsylvania |
| 32 | Shirley Miller | 8 | Daughter | — | Pennsylvania |
| 33 | John Faust | 54 | Head | Adv. Furn. | N. Carolina |
| 34 | Mabel Faust | 51 | Wife | — | Ohio |
| 35 | William M. Marshall | 59 | Head | Clerk | Scotland |
| 36 | Bertha Marshall | 56 | Wife | — | Pennsylvania |
| 37 | Robert O. Marshall | 18 | Son | Attendant | Pennsylvania |
| 38 | William Jr. Marshall THIS PERSON | 28 | Son | Gas Station | Pennsylvania |
| 39 | — | None | — | — | — |
| 40 | Carl Poth | 52 | Head | Tinner | Germany |
Pedigree Summary
William + 1 sibling
Gen 1 · 4 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)