WD
William Donovan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Donovan across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 8-person household.
Age 25
b. ~1915
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Donovan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Donovan | Head | — | 52 | ~1888 |
| Carroll Donovan | Son | — | 12 | ~1928 |
| Herbert Donovan | Son | — | 18 | ~1922 |
| Josephine Donovan | Spouse | — | 52 | ~1888 |
| Ralph Donovan | Son | — | 21 | ~1919 |
| William Donovan | Son | — | 25 | ~1915 |
| E Donovan | Son | — | 23 | ~1917 |
| Mary Donovan | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 14
Suffolk, Massachusetts · implied b. ~1916 — 47 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donovan |
| Given Name | William |
| Relationship to Head | S |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| 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 |
1940
Suffolk-County, Massachusetts
Son, age 25
Suffolk-County, Massachusetts · implied b. ~1915 — 8 household members
| Surname | Donovan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | H-4 |
| 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 Donovan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Donovan
Son · 1940 · age 25 · b. ~1915 · Massachusetts
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Sibling
Carroll Donovan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Donovan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Donovan
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Donovan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
E Donovan
Sibling · 1940 · age 23
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
34 people indexed on this census page (nara:1940:m-t0627-01664-00137)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Donovan | 52 | Head | Brakeman | Massachusetts |
| 42 | Josephine Donovan | 52 | Wife | — | Massachusetts |
| 43 | William Donovan THIS PERSON | 25 | Son | — | Massachusetts |
| 44 | E. Fred Donovan | 23 | Son | — | Massachusetts |
| 45 | Ralph Donovan | 21 | Son | — | Massachusetts |
| 46 | Herbert Donovan | 18 | Son | — | Massachusetts |
| 47 | Mary Donovan | 15 | Daughter | — | Massachusetts |
| 48 | Carroll Donovan | 12 | Son | — | Massachusetts |
| 49 | Helen Wisniewski | 48 | Head | — | Poland |
| 50 | Sophie Wisniewski | 22 | Daughter | Dressmaker | Massachusetts |
| 51 | Charles Kanchis | 52 | Head | Iron Worker | Lithuania |
| 52 | Kate Kanchis | 53 | Wife | — | Lithuania |
| 53 | Anna Kanchis | 23 | Daughter | Clerk | Massachusetts |
| 54 | James Kolanzan | 31 | Head | Molder | Massachusetts |
| 55 | Anna Kolanzan | 33 | Wife | — | Sweden |
| 56 | Frank Kolanzan | 4 | Son | — | Massachusetts |
| 57 | Morris Euroskas | 48 | Head | — | Lithuania |
| 58 | Annie Euroskas | 47 | Wife | — | Russia |
| 59 | Edward Studley | 45 | Head | Laborer | Massachusetts |
| 60 | Arthur Studley | 44 | Brother | — | Massachusetts |
| 61 | Catherine Strugala | 52 | Head | — | Poland |
| 62 | Edward Strugala | 31 | Son | — | Massachusetts |
| 63 | Charlotte Strugala | 30 | Daughter | Operator | Massachusetts |
| 64 | Helen Strugala | 27 | Daughter | Operator | Massachusetts |
| 65 | Josephine Strugala | 21 | Daughter | Clerk | Massachusetts |
| 66 | Chester Strugala | 18 | Son | Laborer | Massachusetts |
| 67 | Albert Strugala | 15 | Son | — | Massachusetts |
| 68 | Jean Isotti | 33 | Head | Baker Machine | Poland |
| 69 | Stanley Brazasouski | 30 | Head | Laborer | Massachusetts |
| 70 | Stella Brazasouski | 31 | Wife | Meat Packer | Massachusetts |
| 71 | James King | 62 | Head | Machinist | Scotland |
| 72 | Margaret King | 58 | Wife | — | Scotland |
| 73 | Thomas Roche | 46 | Head | Conductor | Massachusetts |
| 74 | Margaret Roche | 17 | Daughter | — | Massachusetts |
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)