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William Henderson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Henderson across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Henderson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| Alice Henderson | Daughter | — | 7 | ~1933 |
| Dorothy Henderson | Daughter | — | 16 | ~1924 |
| Ruth Henderson | Daughter | — | 9 | ~1931 |
| Laura Henderson | Daughter | — | 2 | ~1938 |
| James Henderson | Head | — | 39 | ~1901 |
| James Henderson | Son | — | 15 | ~1925 |
| William Henderson | Son | — | 11 | ~1929 |
| George Henderson | Son | — | 13 | ~1927 |
| Robert Henderson | Son | — | 4 | ~1936 |
| Laura Henderson | Spouse | — | 35 | ~1905 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 1
Suffolk, Massachusetts · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | William R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 11
Suffolk-County, Massachusetts · implied b. ~1929 — 10 household members
| Surname | Henderson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| 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 Henderson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Henderson
Son · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Dorothy Henderson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Henderson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Henderson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Henderson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Henderson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Henderson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Henderson
Sibling · 1940 · age 9
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-t0627-01657-00328)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Domenica Trifiro | 54 | Wife | — | Italy |
| 42 | Rose Trifiro | 29 | Daughter | Seamstress | Massachusetts |
| 43 | Maria Trifiro | 24 | Daughter | Floor Lady | Massachusetts |
| 44 | Catherine Grifero | 47 | Head | Seamstress | Italy |
| 45 | Bertha Dame | 55 | Head | Ironer | Massachusetts |
| 46 | Margaret Quigley | 65 | Head | — | Eire |
| 47 | John Ward | 33 | Nephew | Laborer | Eire |
| 48 | Peter Magash | 31 | Head | Laborer | Massachusetts |
| 49 | Mary Magash | 28 | Wife | — | Massachusetts |
| 50 | Helen Magash | 7 | Daughter | — | Massachusetts |
| 51 | Anthony Magash | 1 | Son | — | Massachusetts |
| 52 | James J. Henderson | 39 | Head | Asbestos Worker | Massachusetts |
| 53 | Laura Henderson | 35 | Wife | — | Massachusetts |
| 54 | Dorothy Henderson | 16 | Daughter | — | Massachusetts |
| 55 | James Jr. Henderson | 15 | Son | — | Massachusetts |
| 56 | George Henderson | 13 | Son | — | Massachusetts |
| 57 | William Henderson THIS PERSON | 11 | Son | — | Massachusetts |
| 58 | Ruth Henderson | 9 | Daughter | — | Massachusetts |
| 59 | Alice Henderson | 7 | Daughter | — | Massachusetts |
| 60 | Robert Henderson | 4 | Son | — | Massachusetts |
| 61 | Laura Henderson | 2 | Daughter | — | Massachusetts |
| 62 | Manuel August | 59 | Head | Painter | Massachusetts |
| 63 | Sarah August | 56 | Wife | — | Scotland |
| 64 | Francis August | 29 | Son | Salesman | Massachusetts |
| 65 | Bernadette August | 18 | Daughter | Press Worker | Massachusetts |
| 66 | John Carney | 50 | Head | Checker | Massachusetts |
| 67 | Margaret Carney | 49 | Wife | — | Massachusetts |
| 68 | John Jr. Carney | 26 | Son | Laborer | Massachusetts |
| 69 | William Carney | 22 | Son | Laborer | Massachusetts |
| 70 | Rita Carney | 20 | Daughter | Inspector | Massachusetts |
| 71 | George Carney | 18 | Son | — | Massachusetts |
| 72 | Catherine Carney | 16 | Daughter | — | Massachusetts |
| 73 | Frances Carney | 11 | Son | — | Massachusetts |
| 74 | Louis R. Marano | 36 | Head | Barber | Italy |
| 75 | Rose Marano | 36 | Wife | — | Massachusetts |
| 76 | Rita Marano | 13 | Daughter | — | Massachusetts |
| 77 | Joseph Marano | 8 | Son | — | Massachusetts |
| 78 | Robert Marano | 5 | Son | — | Massachusetts |
| 79 | Nancy Marano | 2 | Daughter | — | Massachusetts |
| 80 | Carmen Mancino | 53 | Head | Candy Maker | Italy |
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)