WB
William Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this William Boyd across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents Henry & Margaret — first a son (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Boyd |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Riderwood |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | Clerk |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 47 |
| Income (1939) | 218 |
| Highest Grade | 7 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Clerk |
| Township / Ward | Riderwood |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Harry Boyd | Head | — | 49 | ~1891 |
| William Boyd | Son | — | 22 | ~1918 |
| John Boyd | Son | — | 19 | ~1921 |
| Margaret Boyd | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Baltimore, Maryland
Son, age 2
Baltimore, Maryland · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Ireland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 12
Baltimore, Maryland · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Son, age 22
Baltimore-County, Maryland · implied b. ~1918 — 4 household members
| Surname | Boyd |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Riderwood |
| 1935 Residence (County) | Baltimore |
| Occupation | Clerk |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 47 |
| Income (1939) | 218 |
| Highest Grade | 7 |
| 1935 Residence | Same house |
| 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 Henry Boyd (~0.92 confidence) and mother Margaret Boyd (~0.92 confidence) and father Harry Boyd (~0.92 confidence) and mother Margaret Boyd (~0.92 confidence) and mother Margaret Boyd (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Boyd
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Margaret Boyd
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Harry Boyd
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Margaret Boyd
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Margaret Boyd
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Boyd
Son · 1940 · age 22 · b. ~1918 · Maryland
★ You are viewing this record
Sibling
John Boyd
Sibling · 1940 · age 19
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 — Baltimore-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01505-00388)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Douglas W. Chatterly | 44 | Head | Insurance Agent | Connecticut |
| 2 | Julia B. X Chatterly | 40 | Wife | — | Maryland |
| 3 | Suzanne Chatterly | 16 | Daughter | — | Maryland |
| 4 | Jean B. Chatterly | 13 | Daughter | — | Maryland |
| 5 | Mabel M. Bartlett | 61 | Mother in law | — | Maryland |
| 6 | Alice Bartlett | 24 | Sister in law | — | Maryland |
| 7 | Wandell Meekins | 25 | Servant | Servant | Virginia |
| 8 | Mary Meekins | 32 | Servant | Servant | Virginia |
| 9 | Harry Boyd | 49 | Head | House Painter | Maryland |
| 10 | Margaret X Boyd | 49 | Wife | — | Free State |
| 11 | William H. Boyd THIS PERSON | 22 | Son | Clerk | Maryland |
| 12 | John Joseph Boyd | 19 | Son | House Painter | Maryland |
| 13 | Charles E. Miller | 43 | Head | House Painter | Maryland |
| 14 | Nettie B. X Miller | 43 | Wife | — | Maryland |
| 15 | Arthur J. Ringgold | 47 | Head | Artist | Maryland |
| 16 | Bernadine Ringgold | 45 | Wife | — | Maryland |
| 17 | Margaret E. Ringgold | 19 | Daughter | Shoe Worker | Maryland |
| 18 | Julia Lee Ringgold | 13 | Daughter | — | Maryland |
| 19 | Mary E. Ringgold | 7 | Daughter | — | Maryland |
| 20 | Katherine Heath | 66 | Aunt | — | Maryland |
| 21 | Extra Line Heath | None | — | — | — |
| 22 | Extra Line Heath | None | — | — | — |
| 23 | Charles F. X Gill | 37 | Head | Automobile Mechanic | Maryland |
| 24 | Virginia M. Gill | 34 | Wife | — | Maryland |
| 25 | Charles E. Jr. Gill | 11 | Son | — | Maryland |
| 26 | John T. Stiffler | 56 | Father in law | Laborer | Maryland |
| 27 | Mamie V. X Stiffler | 52 | Mother in law | — | Maryland |
| 28 | John R. Ditzel | 34 | Head | Stone Mason | Maryland |
| 29 | Margaret B. X Ditzel | 31 | Wife | — | Maryland |
| 30 | Rachel A. Ditzel | 10 | Daughter | — | Maryland |
| 31 | Elizabeth M. Ditzel | 8 | Daughter | — | Maryland |
| 32 | Nettie Adair Ditzel | 6 | Daughter | — | Maryland |
| 33 | Nancy R. Ditzel | 4 | Daughter | — | Maryland |
| 34 | John Robert Ditzel | 2 | Son | — | Maryland |
| 35 | Allen J. Stevens | 58 | Head | Gardener | Virginia |
| 36 | Mary Stevens | 54 | Daughter | — | Maryland |
| 37 | Bernard F. Stevens | 28 | Son | Clerk | Maryland |
| 38 | Edna J. Stevens | 24 | Daughter | Bookkeeper | Maryland |
| 39 | Doris M. Stevens | 21 | Daughter | Filing Clerk | Maryland |
| 40 | Katherine Stevens | 17 | Daughter | — | Maryland |
Pedigree Summary
William + 1 sibling
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)