WM
William Madden — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Madden across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Madden |
| 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 | 5 |
| 1935 Residence | Same place |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Margaret Madden | Daughter | — | 9 | ~1931 |
| Ralph Madden | Son | — | 14 | ~1926 |
| Margaret Madden | Spouse | — | 50 | ~1890 |
| Francis Madden | Son | — | 18 | ~1922 |
| Frank Madden | Head | — | 48 | ~1892 |
| Edward Madden | Son | — | 21 | ~1919 |
| William Madden | Son | — | 11 | ~1929 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 1
Suffolk, Massachusetts · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 11
Suffolk-County, Massachusetts · implied b. ~1929 — 7 household members
| Surname | Madden |
| 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 | 5 |
| 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 Madden across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Madden
Son · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Ralph Madden
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Madden
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Madden
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Madden
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-t0627-01667-00532)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna V. Wollman | 46 | Wife | — | Scotland |
| 42 | Frieda W. Wollman | 17 | Daughter | — | Massachusetts |
| 43 | Paul Jr. Wollman | 15 | Son | New Worker | Massachusetts |
| 44 | George H.W. Keith | 50 | Head | — | Canada English |
| 45 | Pauline M. Keith | 40 | Wife | Minister | Canada English |
| 46 | Miriam J. C. Keith | 13 | Daughter | Cook | Massachusetts |
| 47 | Maude E. Keith | 11 | Daughter | — | Massachusetts |
| 48 | Gaetano Corbo | 53 | Head | — | Italy |
| 49 | Genovella M. Corbo | 49 | Wife | Box Maker | Italy |
| 50 | Florence Corbo | 15 | Daughter | — | Massachusetts |
| 51 | Gunilda V. Corbo | 13 | Daughter | — | Massachusetts |
| 52 | Paul H. Mcdowell | 4 | Lodger | — | New York |
| 53 | Frank W. Madden | 48 | Head | Night Watchman | Massachusetts |
| 54 | Margaret F. Madden | 50 | Wife | — | Irish Free State |
| 55 | Edward P. Madden | 21 | Son | New Worker | Massachusetts |
| 56 | Francis W. Madden | 18 | Son | New Worker | Massachusetts |
| 57 | Ralph Madden | 14 | Son | — | Massachusetts |
| 58 | William Madden THIS PERSON | 11 | Son | — | Massachusetts |
| 59 | Margaret Madden | 9 | Daughter | — | Massachusetts |
| 60 | James J. Elliot | 30 | Head | Janitor | Canada English |
| 61 | Margaret E. Elliot | 32 | Wife | — | Massachusetts |
| 62 | Martin J. Whelan | 32 | Head | Truck Driver | Massachusetts |
| 63 | Edna M. Whelan | 30 | Wife | — | Massachusetts |
| 64 | Martin J. Jr. Whelan | 9 | Son | — | Massachusetts |
| 65 | James E. Whelan | 7 | Son | — | Massachusetts |
| 66 | Dorothy A. Whelan | 2 | Daughter | — | Massachusetts |
| 67 | Dorothy M. Doyle | 13 | Niece | — | Massachusetts |
| 68 | Milton C. Hallin | 31 | Head | Electrician | New York |
| 69 | Emily E. Hallin | 32 | Wife | — | England |
| 70 | Milton Hallin | 10 | Son | — | Massachusetts |
| 71 | Carl J. Hallin | 8 | Son | — | Massachusetts |
| 72 | Enid A. Hallin | 6 | Daughter | — | Massachusetts |
| 73 | Marion M. Hallin | 2 | Daughter | — | Massachusetts |
| 74 | John M. Dunn | 42 | Head | Salesman | Canada English |
| 75 | Catherine M. Dunn | 43 | Wife | Housewife | Massachusetts |
| 76 | Richard R. Dunn | 18 | Son | Bus Boy | Massachusetts |
| 77 | John J. Dunn | 13 | Son | — | Massachusetts |
| 78 | Helen V. Hayes | 51 | Head | — | Massachusetts |
| 79 | Mary Coyne | 66 | Head | — | Maine |
| 80 | Harold A. Kennedy | 38 | Head | Laborer | 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)