WC
William Casey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Casey across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Casey |
| Given Name | William F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | none |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1928 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mary Casey | Daughter | — | 19 | ~1921 |
| Elizabeth Casey | Daughter | — | 14 | ~1926 |
| John Casey | Head | — | 54 | ~1886 |
| Margaret Burke | Other | — | 29 | ~1911 |
| John Casey | Son | — | 23 | ~1917 |
| Thomas Casey | Son | — | 21 | ~1919 |
| Richard Casey | Son | — | 16 | ~1924 |
| George Casey | Son | — | 18 | ~1922 |
| William Casey | Son | — | 12 | ~1928 |
| Elizabeth Casey | Spouse | — | 51 | ~1889 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 2
Suffolk, Massachusetts · implied b. ~1928 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Casey |
| Given Name | William F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Connecticut |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 12
Suffolk-County, Massachusetts · implied b. ~1928 — 10 household members
| Surname | Casey |
| Given Name | William F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | none |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| 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 Casey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Casey
Son · 1940 · age 12 · b. ~1928 · Massachusetts
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Sibling
Elizabeth Casey
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Casey
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Casey
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Casey
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Casey
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Casey
Sibling · 1940 · age 21
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01682-00039)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John W. Clark | 65 | Head | Tower Man | Canada-Eng |
| 2 | Annie Clark | 66 | Wife | None | Massachusetts |
| 3 | Margaret A. Clark | 44 | Daughter | Office | Massachusetts |
| 4 | William B. Clark | 36 | Son | Aeroplane Engineer | Massachusetts |
| 5 | Annie O'Keefe | 72 | Head | None | Massachusetts |
| 6 | Margaret A. O'Keefe | 68 | Wife | None | Dorchester |
| 7 | Elizabeth G. O'Keefe | 46 | Son | Machinist | Massachusetts |
| 8 | Elizabeth Thompson | 44 | Lodger | None | Massachusetts |
| 9 | Annie Sayles | 65 | Lodger | Gardener | Ireland |
| 10 | Thomas Benson | 33 | Lodger | Shipper | Massachusetts |
| 11 | Bertha O'Neil | 46 | Lodger | Packer | Massachusetts |
| 12 | Mary A. White | 78 | Head | None | Massachusetts |
| 13 | Mary A. White | 53 | Daughter | None | Massachusetts |
| 14 | Patrick J. Dunn | 50 | Head | Insurance Agent | Massachusetts |
| 15 | Winifred Dunn | 45 | Wife | None | Canada-Eng |
| 16 | Edward L. Dunn | 15 | Son | None | Massachusetts |
| 17 | John F. Casey | 54 | Head | Doctor | Connecticut |
| 18 | Elizabeth M. Casey | 51 | Wife | None | Massachusetts |
| 19 | John F. Jr. Casey | 23 | Son | None | Massachusetts |
| 20 | Thomas W. Casey | 21 | Son | None | Massachusetts |
| 21 | Mary E. Casey | 19 | Daughter | None | Massachusetts |
| 22 | George H. Casey | 18 | Son | None | Massachusetts |
| 23 | Richard H. Casey | 16 | Son | None | Massachusetts |
| 24 | Elizabeth A. Casey | 14 | Daughter | None | Massachusetts |
| 25 | William F. Casey THIS PERSON | 12 | Son | None | Massachusetts |
| 26 | Margaret E. Burke | 29 | Maid | Maid | Irish Free State |
| 27 | James F. Mullin | 44 | Head | None | Massachusetts |
| 28 | Mary A. Mullin | 37 | Wife | None | Canada-Eng |
| 29 | Mary Mullin | 28 | Daughter | None | Massachusetts |
| 30 | Harold Mullin | 26 | Son | None | Massachusetts |
| 31 | Neil Beaton | 62 | Head | Steam Worker | Canada-Eng |
| 32 | Mary Beaton | 44 | Wife | None | Canada-Eng |
| 33 | Charles Beaton | 19 | Son | Worker | Massachusetts |
| 34 | Margaret Beaton | 15 | Daughter | None | Massachusetts |
| 35 | Anna Beaton | 14 | Daughter | None | Massachusetts |
| 36 | Marie Beaton | 13 | Daughter | None | Massachusetts |
| 37 | Cameron Beaton | 9 | Son | None | Massachusetts |
| 38 | Rita Beaton | 7 | Daughter | None | Massachusetts |
| 39 | Jean Beaton | 4 | Daughter | None | Massachusetts |
| 40 | Theresa Beaton | 1 | Daughter | None | Massachusetts |
Related Census Records
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)