WB
William Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this William Boyd across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents William & William — first a head (b.~1904), then head of a 4-person household.
Age 36
b. ~1904
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Boyd |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Postal Clerk |
| Industry | U.S. Post Office |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Postal Clerk |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1904 |
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 |
|---|---|---|---|---|
| Dorothy Boyd | Daughter | — | 10 | ~1930 |
| Rosaline Boyd | Daughter | — | 9 | ~1931 |
| William Boyd | Head | — | 36 | ~1904 |
| Dorothy Boyd | Spouse | — | 34 | ~1906 |
Census Appearances
1920
Baltimore, Maryland
Son, age 15
Baltimore, Maryland · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | William L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Clerk |
| Industry | Retail Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 24
Baltimore, Maryland · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Chauffeur |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 36
Baltimore-City-County, Maryland · implied b. ~1904 — 4 household members
| Surname | Boyd |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Postal Clerk |
| Industry | U.S. Post Office |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 William Boyd (~0.92 confidence) and father William Boyd (~0.92 confidence) and mother Nellie Boyd (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Boyd
b. ~1866
Source father
● Household
· direct · ~0.92
Father
William Boyd
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Nellie Boyd
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Boyd
Head · 1940 · age 36 · b. ~1904 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01540-00734)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Daisy Hutchins | 58 | Head | Clerk | Maryland |
| 2 | Charles S. Small | 62 | Head | Proprietor | Maryland |
| 3 | Irene C. O. Small | 56 | Wife | — | Maryland |
| 4 | William Small | 21 | Son | Welder | Maryland |
| 5 | Margaret Small | 18 | Daughter | Clerk | Maryland |
| 6 | Robert Small | 16 | Son | — | Maryland |
| 7 | Ruth S. Himmel | 38 | Daughter | — | Maryland |
| 8 | Henry Himmel | 37 | Son-in-law | Operator | Maryland |
| 9 | Ruth R. Himmel | 8 | Daughter | — | Maryland |
| 10 | William Boyd THIS PERSON | 36 | Head | Postal Clerk | Maryland |
| 11 | Dorothy O. Boyd | 34 | Wife | — | Maryland |
| 12 | Dorothy L. Boyd | 10 | Daughter | — | Maryland |
| 13 | Rosaline Boyd | 9 | Daughter | — | Maryland |
| 14 | Mattie O. Hook | 63 | Head | Seamstress | Maryland |
| 15 | Anna Hook | 56 | Sister | Seamstress | Maryland |
| 16 | Mamie Harrington | 59 | Head | — | Maryland |
| 17 | Albert J. Curran | 47 | Brother | Lawyer | Maryland |
| 18 | Edith V. O. Curran | 51 | Sister | Stenographer | Maryland |
| 19 | Howard Myers | 41 | Head | Sales Manager | Maryland |
| 20 | Blanche O. Myers | 37 | Wife | — | Michigan |
| 21 | Howard J. Myers | 17 | Son | — | Maryland |
| 22 | Vernon Harrison | 42 | Head | Salesman | Maryland |
| 23 | Valerie Harrison | 18 | Daughter | New Worker | Maryland |
| 24 | Vernon Jr. Harrison | 16 | Son | — | Maryland |
| 25 | Roland O. Harrison | 4 | Son | — | Maryland |
| 26 | Carol Harrison | 9 | Daughter | — | Maryland |
| 27 | Lawrence Knight | 58 | Head | Plaster Foreman | Maryland |
| 28 | Lena O. Knight | 55 | Wife | — | Virginia |
| 29 | George W. Knight | 22 | Son | — | Maryland |
| 30 | Frank S. Helldorfer | 39 | Head | Real Estate Agent | Maryland |
| 31 | Ethel O. Helldorfer | 40 | Wife | — | Massachusetts |
| 32 | James F. Helldorfer | 17 | Son | — | Maryland |
| 33 | Virginia A. Helldorfer | 15 | Daughter | — | Massachusetts |
| 34 | Theodore Hourneris | 30 | Head | Salesman | Maryland |
| 35 | Myrtle O. Hourneris | 27 | Wife | — | Maryland |
| 36 | Theodore Jr. Hourneris | 11 | Son | — | Maryland |
| 37 | Marion J. Hourneris | 9 | Daughter | — | Maryland |
| 38 | Edward Hupka | 45 | Head | Manager | Maryland |
| 39 | Rena O. Hupka | 46 | Wife | — | Maryland |
Pedigree Summary
William
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)