WM
William Madden — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this William Madden across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Madden |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Malden City |
| Est. Birth Year | ~1925 |
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 |
|---|---|---|---|---|
| Ann Madden | Daughter | — | 17 | ~1923 |
| Edwin Madden | Son | — | 21 | ~1919 |
| Mary Madden | Spouse | — | 44 | ~1896 |
| Donald Madden | Son | — | 14 | ~1926 |
| William Madden | Son | — | 15 | ~1925 |
| Frances Madden | Daughter | — | 22 | ~1918 |
| Arthur Madden | Head | — | 57 | ~1883 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 5
Middlesex, Massachusetts · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Canada-England |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 15
Middlesex-County, Massachusetts · implied b. ~1925 — 7 household members
| Surname | Madden |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Highest Grade | 8 |
| 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 15 · b. ~1925 · Massachusetts
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Sibling
Edwin Madden
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Madden
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Madden
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Madden
Sibling · 1940 · age 22
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
19 people indexed on this census page (nara:1940:m-t0627-01608-00418)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arthur S. Madden | 57 | Head | Custodian | Massachusetts |
| 42 | Mary E. Madden | 44 | Wife | — | Massachusetts |
| 43 | Frances Madden | 22 | Daughter | Office Clerk | Massachusetts |
| 44 | Edwin Madden | 21 | Son | Cutter | Massachusetts |
| 45 | Ann Madden | 17 | Daughter | — | Massachusetts |
| 46 | William Madden THIS PERSON | 15 | Son | — | Massachusetts |
| 47 | Donald Madden | 14 | Son | — | Massachusetts |
| 48 | Leonard Duffy | 36 | Head | Manager Service | Massachusetts |
| 49 | Alice C. Duffy | 32 | Wife | — | Canada-English |
| 50 | Leonard Jr. Duffy | 12 | Son | — | Massachusetts |
| 51 | Donald Duffy | 10 | Son | — | Massachusetts |
| 52 | Joan Duffy | 6 | Daughter | — | Massachusetts |
| 53 | Margaret M. Cartledge | 39 | Head | Office Clerk | Massachusetts |
| 54 | Betty Cartledge | 17 | Daughter | — | Connecticut |
| 55 | Joan Cartledge | 15 | Daughter | — | California |
| 56 | John Richard Madden | 24 | Employee | Marine Engineer | Massachusetts |
| 57 | Badger True, R. | 26 | Head | Sales Clerk | New York |
| 58 | Betty True, R. | 24 | Wife | — | Connecticut |
| 59 | Ranston B. True, R. | 1 | Son | — | 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)