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William Bullock — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this William Bullock across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 10-person household.
Age 15
b. ~1915
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Bullock |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Arlington Town Part |
| Est. Birth Year | ~1915 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| John Bullock | Son | — | 8 | ~1922 |
| William Bullock | Son | — | 15 | ~1915 |
| Thomas Bullock | Son | — | 18 | ~1912 |
| James Bullock | Son | — | 12 | ~1918 |
| Mary Herne | Other | — | 64 | ~1866 |
| Mary Bullock | Daughter | — | 19 | ~1911 |
| Pauline Bullock | Daughter | — | 10 | ~1920 |
| Pauline Bullock | Other | — | 42 | ~1888 |
| Thomas Bullock | Head | — | 41 | ~1889 |
| Anna Bullock | Daughter | — | 16 | ~1914 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 5
Middlesex, Massachusetts · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bullock |
| Given Name | William F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 15
Middlesex, Massachusetts · implied b. ~1915 — 10 household members
| Surname | Bullock |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Bullock across 2 US Census years (1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
William Bullock
Son · 1930 · age 15 · b. ~1915 · Massachusetts
★ You are viewing this record
Sibling
Anna Bullock
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Bullock
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Bullock
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Bullock
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Bullock
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Bullock
Sibling · 1930 · 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
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel914:0233)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Joseph H. Jeffery | 50 | Head | Psychologist | Canada English |
| 52 | Catherine A. Jeffery | 50 | Wife-H | — | United States |
| 53 | Joseph H. Jr. Jeffery | 20 | Son | — | Massachusetts |
| 54 | Marion Catherine A. Jeffery | 18 | Daughter | — | Massachusetts |
| 55 | Margaret Lyons | 65 | Head-H | — | Canada English |
| 56 | Arthur F. Lyons | 34 | Son | Fireman | Massachusetts |
| 57 | Frank E. Sullivan | 49 | Head | Inspector | Massachusetts |
| 58 | Agnes C. Sullivan | 45 | Wife-H | — | Massachusetts |
| 59 | Rita Sullivan | 13 | Daughter | — | Massachusetts |
| 60 | Agnes M. Sullivan | 12 | Daughter | — | Massachusetts |
| 61 | Eugene Sullivan | 7 | Son | — | Massachusetts |
| 62 | Louise Sullivan | 6 | Daughter | — | Massachusetts |
| 63 | Robert Sullivan | 4 | Son | — | Massachusetts |
| 64 | Barbara Sullivan | 1 | Daughter | — | Massachusetts |
| 65 | John B. Sundlie | 60 | Head | Caretaker | Norway |
| 66 | Marie H. Sundlie | 58 | Wife-H | — | Norway |
| 67 | Gertrude M. Sundlie | 32 | Daughter | Clerk | Massachusetts |
| 68 | Thelma H. Sundlie | 25 | Daughter | Artist | Massachusetts |
| 69 | Olaf B. Sundlie | 22 | Son | — | Massachusetts |
| 70 | John J. Ago | 40 | Head | Clerk | Ireland |
| 71 | Catherine L. Ago | 39 | Wife-H | — | Canada English |
| 72 | George R. Ago | 16 | Son | — | Massachusetts |
| 73 | Eleanor Ago | 14 | Daughter | — | Massachusetts |
| 74 | John J. Ago | 12 | Son | — | Massachusetts |
| 75 | Alice Ago | 11 | Daughter | — | Massachusetts |
| 76 | Robert F. Ago | 5 | Son | — | Massachusetts |
| 77 | Steven Halerman | 54 | Head | Carpenter | Hungary |
| 78 | Anna Halerman | 45 | Wife-H | — | Hungary |
| 79 | Helen Halerman | 25 | Daughter | Secretary | New York |
| 80 | George Halerman | 22 | Son | Service Man | Hungary |
| 81 | William Halerman | 21 | Son | Bookkeeper | Massachusetts |
| 82 | Thomas A. Bullock | 41 | Head | Civil Engineer | Massachusetts |
| 83 | Pauline C. Bullock | 42 | Wife-H | — | Massachusetts |
| 84 | Mary S. Bullock | 19 | Daughter | — | Massachusetts |
| 85 | Thomas Bullock | 18 | Son | — | Massachusetts |
| 86 | Anna Bullock | 16 | Daughter | — | Massachusetts |
| 87 | William Bullock THIS PERSON | 15 | Son | — | Massachusetts |
| 88 | James Bullock | 12 | Son | — | Massachusetts |
| 89 | Pauline Bullock | 10 | Daughter | — | Massachusetts |
| 90 | John Bullock | 8 | Son | — | Massachusetts |
| 91 | Mary A. Herne | 64 | Mother-in-law | House Work | England |
| 92 | Phillip A. Doherty | 37 | Head | Pressman | Massachusetts |
| 93 | Catherine F. Doherty | 37 | Wife-H | — | Massachusetts |
| 94 | Phillip Doherty | 11 | Son | — | Massachusetts |
| 95 | Francis Doherty | 8 | Son | — | Massachusetts |
| 96 | Mary Doherty | 5 | Daughter | — | Massachusetts |
| 97 | Ruth G. Lally | 29 | Head-H | Housework | Massachusetts |
| 98 | Edna Lally | 25 | Sister | Piano Player | Massachusetts |
| 99 | Walter Lally | 23 | Brother | Service Man | Massachusetts |
| 100 | Arthur Lally | 18 | Brother | Clerk | Massachusetts |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)