JB
James Bullock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this James Bullock across the 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 13-person household.
Age 16
b. ~1924
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Bullock |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Ridley Park |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Folcroft |
| Est. Birth Year | ~1924 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Charles Bullock | Son | — | 15 | ~1925 |
| William Bullock | Son | — | 1 | ~1939 |
| Jennie Bullock | Daughter | — | 3 | ~1937 |
| Alice Bullock | Daughter | — | 8 | ~1932 |
| Robert Bullock | Son | — | 13 | ~1927 |
| Helen Bullock | Daughter | — | 9 | ~1931 |
| Myrtle Bullock | Daughter | — | 4 | ~1936 |
| James Bullock | Son | — | 16 | ~1924 |
| Kathryn Bullock | Daughter | — | 6 | ~1934 |
| John Bullock | Son | — | 11 | ~1929 |
| Jennie Bullock | Spouse | — | 40 | ~1900 |
| George Bullock | Head | — | 48 | ~1892 |
| Dorothy Bullock | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Delaware, Pennsylvania
Son, age 5
Delaware, Pennsylvania · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bullock |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Son, age 16
Delaware-County, Pennsylvania · implied b. ~1924 — 13 household members
| Surname | Bullock |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Ridley Park |
| 1935 Residence (County) | Delaware |
| Hours Worked | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Pennsylvania |
| 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 James Bullock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Bullock
Son · 1940 · age 16 · b. ~1924 · Pennsylvania
★ You are viewing this record
Sibling
Alice Bullock
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Bullock
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Myrtle Bullock
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Bullock
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Bullock
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jennie Bullock
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Bullock
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Bullock
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Bullock
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathryn Bullock
Sibling · 1940 · age 6
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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03491-00302)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Abt | 22 | Son | Pipe Fitter | New Hampshire |
| 2 | Frank Abt | 19 | Son | Pipe Fitter Helper | Pennsylvania |
| 3 | Joseph C. Foley | 33 | Head | Refinery Operator | Pennsylvania |
| 4 | Mary C. Foley | 34 | Wife | — | Pennsylvania |
| 5 | Dolores Foley | 4 | daughter | — | Pennsylvania |
| 6 | Catherine Brennan | 66 | mother-in-law | — | Ireland |
| 7 | William Gernet | 40 | Head | Refinery Operator | Connecticut |
| 8 | Anna Gernet | 39 | Wife | — | Pennsylvania |
| 9 | William Gernet | 11 | son | — | Pennsylvania |
| 10 | Barbara Gernet | 6 | daughter | — | Pennsylvania |
| 11 | Jean Gernet | 4 | daughter | — | Pennsylvania |
| 12 | Charles Walker | 34 | head | Clerk | Pennsylvania |
| 13 | Ethel Walker | 37 | wife | — | Pennsylvania |
| 14 | Charles Walker | 6 | son | — | Pennsylvania |
| 15 | James Walker | 3 | son | — | Pennsylvania |
| 16 | George Bullock | 48 | head | Carpenter | Pennsylvania |
| 17 | Jennie Bullock | 40 | wife | — | Pennsylvania |
| 18 | Dorothy Bullock | 18 | daughter | Stenographer | Pennsylvania |
| 19 | James Bullock THIS PERSON | 16 | son | — | Pennsylvania |
| 20 | Charles Bullock | 15 | son | — | Pennsylvania |
| 21 | Robert Bullock | 13 | son | — | Pennsylvania |
| 22 | John Bullock | 11 | son | — | Pennsylvania |
| 23 | Helen Bullock | 9 | daughter | — | Pennsylvania |
| 24 | Alice Bullock | 8 | daughter | — | Pennsylvania |
| 25 | Kathryn Bullock | 6 | daughter | — | Pennsylvania |
| 26 | Myrtle Bullock | 4 | daughter | — | Pennsylvania |
| 27 | Jennie Bullock | 3 | daughter | — | Pennsylvania |
| 28 | William Bullock | 1 | son | — | Pennsylvania |
| 29 | Leo Sharkey | 48 | head | Radio Technician | Rhode Island |
| 30 | Margaret Sharkey | 45 | wife | — | Ireland |
| 31 | Rita Sharkey | 18 | daughter | — | Florida |
| 32 | Jean Sharkey | 14 | daughter | — | Pennsylvania |
| 33 | Thomas Ditchfield | 68 | head | Clerk | England |
| 34 | Margaret Ditchfield | 55 | wife | — | England |
| 35 | Thomas Ditchfield | 28 | son | Rate Setter | Pennsylvania |
| 36 | Margaret Ditchfield | 22 | daughter | Stenographer | Pennsylvania |
| 37 | Michael Zolochik | 60 | head | Engine Man | Austria |
| 38 | Hana Zolochik | 59 | wife | — | Austria |
| 39 | Helen Zolochik | 28 | daughter | Stenographer | Pennsylvania |
| 40 | Emma Zolochik | 23 | daughter | Seamstress | Pennsylvania |
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)