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John Bullock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cecil-County, Maryland
Our Model Tree links this John Bullock across the 1930 and 1940 US Censuses in Cecil-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 8-person household.
Age 18
b. ~1922
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cecil-County, Maryland |
| Surname | Bullock |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | 3rd Election District |
| 1935 Residence (County) | Cecil |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | 3Rd Election District |
| Est. Birth Year | ~1922 |
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 |
|---|---|---|---|---|
| Rebecca Bullock | Daughter | — | 4 | ~1936 |
| William Bullock | Son | — | 17 | ~1923 |
| Joseph Bullock | Son | — | 11 | ~1929 |
| John Bullock | Son | — | 18 | ~1922 |
| Ellis Bullock | Other | — | 52 | ~1888 |
| Frances Bullock | Daughter | — | 8 | ~1932 |
| John Bullock | Head | — | 47 | ~1893 |
| Ida Bullock | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Cecil, Maryland
Son, age 7
Cecil, Maryland · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bullock |
| Given Name | John T. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Cecil-County, Maryland
Son, age 18
Cecil-County, Maryland · implied b. ~1922 — 8 household members
| Surname | Bullock |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | 3rd Election District |
| 1935 Residence (County) | Cecil |
| Highest Grade | H 4 |
| 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 John Bullock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Bullock
Son · 1940 · age 18 · b. ~1922 · Maryland
★ You are viewing this record
Sibling
Joseph Bullock
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rebecca Bullock
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Bullock
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Bullock
Sibling · 1940 · age 8
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 — Cecil-County, Maryland
Open full size
1940 US Federal Census — Cecil-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01545-00286)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Mahoney | 22 | Son | Carpenters | Maryland |
| 42 | Lou Mahoney | 19 | Son | Carpenters | Maryland |
| 43 | Charles Mahoney | 18 | Son | Laborer | Maryland |
| 44 | Thomas E. Mahoney | 16 | Son | — | Maryland |
| 45 | John Bullock | 47 | Head | Paper Worker | Maryland |
| 46 | Ida Bullock | 47 | Wife | — | Maryland |
| 47 | John J. Bullock THIS PERSON | 18 | Son | — | Maryland |
| 48 | William Bullock | 17 | Son | Laborer | Maryland |
| 49 | Joseph Bullock | 11 | Son | — | Maryland |
| 50 | Frances Bullock | 8 | Daughter | — | Delaware |
| 51 | Rebecca Bullock | 4 | Daughter | — | Maryland |
| 52 | Ellis Bullock | 52 | Brother | Beaterman | Maryland |
| 53 | Samuel Wilson | 64 | Head | Farm Operator | Maryland |
| 54 | Mary J. Wilson | 63 | Wife | — | Pennsylvania |
| 55 | Myrtle G. Wilson | 37 | Daughter | — | Maryland |
| 56 | Frank Lake | 30 | Head | Exp. Worker | Maryland |
| 57 | Elmeda Lake | 32 | Wife | Machine Operator | New York |
| 58 | Audrey Lake | 5 | Daughter | — | Maryland |
| 59 | Clyde Hickman | 29 | Head | — | Maryland |
| 60 | Margaret A. Hickman | 29 | Wife | — | Maryland |
| 61 | Walter Hickman | 4 | Son | — | Maryland |
| 62 | Clyde Jr. Hickman | 1 | Son | — | Maryland |
| 63 | Charles Mckinney | 30 | Head | Laborer | Maryland |
| 64 | Nancy Mckinney | 29 | Wife | — | Maryland |
| 65 | Stephen Mckinney | 14 | Son | — | Maryland |
| 66 | George Mckinney | 13 | Son | — | Maryland |
| 67 | George Foster | 49 | Head | Farm Operator | Maryland |
| 68 | Sara S. Foster | 44 | Wife | — | Maryland |
| 69 | George Foster | 20 | Son | Paper Worker | Maryland |
| 70 | Elwood Lotman | 63 | Nephew | Laborer | Maryland |
| 71 | Andrew Truitt | 24 | Head | Laborer | Delaware |
| 72 | Dorothy L. Truitt | 21 | Wife | — | Maryland |
| 73 | Benjamin Truitt | 3 | Son | — | Maryland |
| 74 | Alfred Scarborough | 79 | Head | Mechanic | Maryland |
| 75 | Elsie Scarborough | 50 | Daughter | — | Maryland |
| 76 | Alberta Haley | 25 | Grandchild | Exp. Worker | Maryland |
| 77 | Gilbert Haley | 23 | Grandchild | Manager | Maryland |
| 78 | Pauline Scarborough | 21 | Grandchild | Weaver | Maryland |
| 79 | Pearl Scarborough | 18 | Grandchild | Weaver | Maryland |
| 80 | Doris A. Scarborough | 6 | Grandchild | — | Maryland |
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)