WM
William Madden — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Madden across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1913), then head of a 10-person household.
Age 27
b. ~1913
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Madden |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Laborer |
| Industry | Mill (Steel) |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 176 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1913 |
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 |
|---|---|---|---|---|
| Pierce Madden | Son | — | 31 | ~1909 |
| Roland Madden | Other | — | 6 | ~1934 |
| James Madden | Other | — | 3 | ~1937 |
| William Madden | Son | — | 27 | ~1913 |
| James Madden | Head | — | 61 | ~1879 |
| James Madden | Son | — | 35 | ~1905 |
| Hannah Madden | Spouse | — | 58 | ~1882 |
| Helen Madden | Daughter | — | 24 | ~1916 |
| Lentha Madden | Other | — | 16 | ~1924 |
| Greta Madden | Daughter | — | 23 | ~1917 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 17
Allegheny, Pennsylvania · implied b. ~1913 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | William F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Railway shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 27
Allegheny-County, Pennsylvania · implied b. ~1913 — 10 household members
| Surname | Madden |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Laborer |
| Industry | Mill (Steel) |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 176 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 27 · b. ~1913 · Pennsylvania
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Sibling
Pierce Madden
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Madden
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Greta Madden
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Madden
Sibling · 1940 · age 35
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03660-00264)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest Anna Wilharm | 40 | Daughter | Stenographer | Pennsylvania |
| 2 | Hope Wilharm | 16 | Niece | — | Pennsylvania |
| 3 | Philip Williamson | 43 | Head | Labor | Pennsylvania |
| 4 | Anna Williamson | 33 | Wife | Packing | Pennsylvania |
| 5 | Domenico Pagnotine | 44 | Head | Laborer | Italy |
| 6 | Vincenza Pagnotine | 40 | Wife | — | Italy |
| 7 | Lorine Pagnotine | 13 | Daughter | — | Pennsylvania |
| 8 | Joseph Pagnotine | 3 | Son | — | Pennsylvania |
| 9 | Benjamin Maryland | 30 | Head | Labor | Pennsylvania |
| 10 | Anna Maryland | 52 | Mother | — | Pennsylvania |
| 11 | Alphonso Maryland | 32 | Head | Salesman | Pennsylvania |
| 12 | Georgia Maryland | 27 | Wife | — | Pennsylvania |
| 13 | Albert Maryland | 5 | Son | — | Pennsylvania |
| 14 | Gloria Maryland | 5 | Daughter | — | Pennsylvania |
| 15 | Carrol Maryland | 1 | Daughter | — | Pennsylvania |
| 16 | Joseph Corso | 35 | Head | Truck Driver | Pennsylvania |
| 17 | Georgina Corso | 33 | Wife | — | Pennsylvania |
| 18 | Jean Corso | 11 | Daughter | — | Pennsylvania |
| 19 | August Corso | 1 | Son | — | Pennsylvania |
| 20 | James Madden | 61 | Head | Cranneman | Pennsylvania |
| 21 | Hannah Madden | 58 | Wife | — | Pennsylvania |
| 22 | William Madden THIS PERSON | 27 | Son | Laborer | Pennsylvania |
| 23 | Helen Madden | 24 | Daughter | Saleslady | Pennsylvania |
| 24 | James Madden | 35 | Son | Laborer | Pennsylvania |
| 25 | Pierce Madden | 31 | Son | Driver | Pennsylvania |
| 26 | Greta Madden | 23 | Daughter | — | Pennsylvania |
| 27 | Lentha Madden | 16 | Grandson | — | Pennsylvania |
| 28 | Roland Madden | 6 | Grandson | — | Pennsylvania |
| 29 | James Madden | 3 | Grandson | — | Pennsylvania |
| 30 | Paul Cohen | 41 | Head | Driver | Pennsylvania |
| 31 | Ethel Cohen | 41 | Wife | — | Russia |
| 32 | Sidney Cohen | 16 | Son | — | Pennsylvania |
| 33 | Pauline Cohen | 14 | Daughter | — | Pennsylvania |
| 34 | Harry Kuba | 31 | Head | Salesman | Pennsylvania |
| 35 | Betty Kuba | 26 | Wife | — | Pennsylvania |
| 36 | Kenneth Kuba | 4 | Son | — | Pennsylvania |
| 37 | Charles Burger | 64 | Head | Baker | Pennsylvania |
| 38 | Marie Burger | 59 | Wife | — | Germany |
| 39 | Herman Burger | 36 | Son | — | Pennsylvania |
| 40 | Richard Burger | 32 | Son | Laborer | Pennsylvania |
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)