WB
William Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Boyd across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Charles & Eleanora — first a son (b.~1912), then head of a 8-person household.
Age 28
b. ~1912
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Boyd |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Sewickley Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | veterinarian |
| Industry | in father's business |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Veterinarian |
| Township / Ward | Sewickley Borough |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mary Boyd | Daughter | — | 22 | ~1918 |
| Emily Boyd | Daughter | — | 23 | ~1917 |
| Charles Boyd | Head | — | 64 | ~1876 |
| Charles Boyd | Son | — | 31 | ~1909 |
| James Boyd | Son | — | 26 | ~1914 |
| Richard Boyd | Son | — | 15 | ~1925 |
| William Boyd | Son | — | 28 | ~1912 |
| Minnie Boyd | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 4
Allegheny, Pennsylvania · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| 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 15
Allegheny, Pennsylvania · implied b. ~1915 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| 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 — 8 household members
| Surname | Boyd |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Sewickley Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | veterinarian |
| Industry | in father's business |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | C 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 Boyd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Boyd (~0.92 confidence) and mother Eleanora Boyd (~0.92 confidence) and father William Boyd (~0.92 confidence) and mother Minnie Boyd (~0.92 confidence) and father Wilson Boyd (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Boyd
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Eleanora Boyd
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
William Boyd
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Minnie Boyd
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Wilson Boyd
b. ~1893
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Boyd
Son · 1940 · age 28 · b. ~1912 · Pennsylvania
★ You are viewing this record
Sibling
Charles Boyd
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Boyd
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Boyd
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emily Boyd
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Boyd
Sibling · 1940 · age 22
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
39 people indexed on this census page (nara:1940:m-t0627-03416-00711)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie Bye | 29 | wife | — | Pennsylvania |
| 42 | James Bye | 4 | son | — | Pennsylvania |
| 43 | Richard Bye | 2 | son | — | Pennsylvania |
| 44 | Martha Darroch | 46 | head | — | Pennsylvania |
| 45 | Betty Darroch | 21 | daughter | Clerk | Pennsylvania |
| 46 | Eloise Darroch | 20 | daughter | Secretary | Pennsylvania |
| 47 | Mary E. Darroch | 17 | daughter | — | Pennsylvania |
| 48 | Elizabeth Blair | 73 | mother | — | Pennsylvania |
| 49 | Charles Boyd | 64 | head | Veterinarian | Pennsylvania |
| 50 | Minnie Boyd | 53 | wife | — | Pennsylvania |
| 51 | Charles Jr. Boyd | 31 | son | Clerk | Pennsylvania |
| 52 | William Boyd THIS PERSON | 28 | son | Veterinarian | Pennsylvania |
| 53 | James E. Boyd | 26 | son | Clerk | Pennsylvania |
| 54 | Emily A. Boyd | 23 | daughter | Nurse | Pennsylvania |
| 55 | Mary Boyd | 22 | daughter | Stenographer | Pennsylvania |
| 56 | Richard Boyd | 15 | son | — | Pennsylvania |
| 57 | Harold Thompson | 51 | head | Salesman | Pennsylvania |
| 58 | Anna Thompson | 48 | wife | — | Pennsylvania |
| 59 | Rita Thompson | 21 | daughter | Clerk | Pennsylvania |
| 60 | Betty Thompson | 20 | daughter | Nurse Student | Pennsylvania |
| 61 | Jean Thompson | 19 | daughter | — | Pennsylvania |
| 62 | William Thompson | 12 | son | — | Pennsylvania |
| 63 | Samuel Highord | 39 | head | Teacher | Pennsylvania |
| 64 | Mae Highord | 39 | wife | — | Pennsylvania |
| 65 | William Parsons | 70 | father-in-law | — | Pennsylvania |
| 66 | Robert Dabone | 30 | head | Foreman | Pennsylvania |
| 67 | Nancy Dabone | 26 | wife | — | Pennsylvania |
| 68 | Lois Jean Dabone | 9 | daughter | — | Pennsylvania |
| 69 | Albert Buckley | 53 | head | Street Commissioner | Pennsylvania |
| 70 | Bertha Buckley | 43 | wife | — | Pennsylvania |
| 71 | Albert Jr. Buckley | 6 | son | — | Pennsylvania |
| 72 | Catherine Matthews | 24 | daughter | Cashier | Pennsylvania |
| 73 | Paul Bower | 35 | head | Artist | Pennsylvania |
| 74 | Helen Bower | 32 | wife | — | Pennsylvania |
| 75 | Mary E. Bower | 5 | daughter | — | Pennsylvania |
| 76 | Sarah Bower | 0 | daughter | — | Pennsylvania |
| 77 | John Herbert | 44 | head | Manager | Pennsylvania |
| 78 | Josephine Herbert | 37 | wife | — | Pennsylvania |
| 79 | Josephine Herbert | 13 | daughter | — | Pennsylvania |
Related Census Records
Pedigree Summary
William + 5 siblings
Gen 1 · 5 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)