JB
John Bullock — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Bullock across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Edwin & Gideon — first a son (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Bullock |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Installer |
| Industry | Wire and Cable |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | H-2 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Installer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1920 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Joseph Bullock | Son | — | 13 | ~1927 |
| Thomas Bullock | Son | — | 23 | ~1917 |
| Joseph Bullock | Son | — | 18 | ~1922 |
| Helen Bullock | Spouse | — | 41 | ~1899 |
| Margaret Bullock | Daughter | — | 10 | ~1930 |
| Edwin Bullock | Head | — | 47 | ~1893 |
| George Bullock | Son | — | 15 | ~1925 |
| John Bullock | Son | — | 20 | ~1920 |
Census Appearances
1920
None, Maryland
Son, age
None, Maryland · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bullock |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 10
Baltimore, Maryland · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bullock |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 20
Baltimore-City-County, Maryland · implied b. ~1920 — 8 household members
| Surname | Bullock |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Installer |
| Industry | Wire and Cable |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | H-2 |
| 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 John Bullock across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Edwin Bullock (~0.92 confidence) and father Gideon Bullock (~0.92 confidence) and mother Edna Bullock (~0.92 confidence) and mother Helen Bullock (~0.92 confidence) and mother Mary Bullock (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edwin Bullock
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Gideon Bullock
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Edna Bullock
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Helen Bullock
b. ~1899
Source mother
● Household
· direct · ~0.92
Mother
Mary Bullock
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Bullock
Son · 1940 · age 20 · b. ~1920 · Maryland
★ You are viewing this record
Sibling
Margaret Bullock
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Bullock
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Bullock
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Bullock
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Bullock
Sibling · 1940 · age 13
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-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01541-00628)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret L Williams | 17 | Daughter | Beauty Operator | Maryland |
| 2 | Paul Williams | 12 | Stepson | — | Maryland |
| 3 | Ira Beard | 55 | Brother in law | Helper | Maryland |
| 4 | Raymond Webbaugh | 34 | Head | Mechanic | West Virginia |
| 5 | Mary L Webbaugh | 32 | Wife | — | Ohio |
| 6 | Edwin Bullock | 47 | Head | Wire Chief | Maryland |
| 7 | Helen Bullock | 41 | Wife | Clerk | Maryland |
| 8 | Thomas J Bullock | 23 | Son | Floor Machinist | Maryland |
| 9 | John P Bullock THIS PERSON | 20 | Son | Installer | Maryland |
| 10 | Joseph A Bullock | 18 | Son | — | Maryland |
| 11 | George J Bullock | 15 | Son | — | Maryland |
| 12 | Joseph E Bullock | 13 | Son | — | Maryland |
| 13 | Margaret M Bullock | 10 | Daughter | — | Maryland |
| 14 | Golden L Blake | 43 | Head | Clerk | Pennsylvania |
| 15 | Nina Blake | 42 | Wife | — | Pennsylvania |
| 16 | Howard L Blake | 18 | Son | — | Pennsylvania |
| 17 | Harold E Kelly | 36 | Head | District Freight Agent | Pennsylvania |
| 18 | Ruth Kelly | 37 | Wife | — | Maryland |
| 19 | John Thawley | 27 | Brother in law | Operator Max Machine | Maryland |
| 20 | Clifton Penser | 46 | Head | Salesman | Maryland |
| 21 | Helen Penser | 37 | Wife | — | Maryland |
| 22 | Helen Penser | 10 | Daughter | — | Maryland |
| 23 | Clifton Penser | 4 | Son | — | Maryland |
| 24 | Carl Penser | 1 | Son | — | Maryland |
| 25 | Henry Hafer | 27 | Head | Stock Clerk | Maryland |
| 26 | Blanche Hafer | 23 | Wife | — | Maryland |
| 27 | Manley Bell | 42 | Head | Carpenter | Virginia |
| 28 | Mary Bell | 32 | Wife | — | Maryland |
| 29 | Manley Jr Bell | 12 | Son | — | Maryland |
| 30 | Charlie B Bell | 10 | Son | — | Maryland |
| 31 | Albert Falk | 37 | Head | Mold Maker | Maryland |
| 32 | Carrie Falk | 36 | Wife | Instructor | Maryland |
| 33 | Minnie Falk | 67 | Mother | — | Maryland |
| 34 | Conley W Regester | 37 | Head | Salesman | Pennsylvania |
| 35 | Ivy Regester | 34 | Wife | — | Maryland |
| 36 | Conley W Jr Regester | 1 | Son | — | Maryland |
| 37 | Harry Feuchter | 45 | Head | Silver Chaser | Maryland |
| 38 | Lillian C Feuchter | 36 | Wife | — | Maryland |
| 39 | Evelyn L Feuchter | 11 | Daughter | — | Maryland |
| 40 | Harry Boyd | 42 | Head | Pipe Fitter | Massachusetts |
Pedigree Summary
John + 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)