WM
William Madden — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Madden across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents William & Ethel — first a son (b.~1910), then head of a 6-person household.
Age 30
b. ~1910
Male
Son
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Madden |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Shipper |
| Industry | Pipe Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 726 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Shipper |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1910 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Madden | Son | — | 30 | ~1910 |
| Ethel Madden | Head | — | 55 | ~1885 |
| Kathryn Madden | Daughter | — | 15 | ~1925 |
| Marlene Madden | Daughter | — | 3 | ~1937 |
| Joseph Madden | Son | — | 21 | ~1919 |
| Eva Madden | Other | — | 29 | ~1911 |
Census Appearances
1920
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1910 — 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 | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 20
Cook, Illinois · implied b. ~1910 — 5 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 | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Massachusetts |
| Occupation | Timekeeper |
| Industry | Electric Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 30
Cook-County, Illinois · implied b. ~1910 — 6 household members
| Surname | Madden |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Shipper |
| Industry | Pipe Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 726 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Madden (~0.92 confidence) and mother Ethel Madden (~0.92 confidence) and mother Julia Madden (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Madden
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Ethel Madden
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Julia Madden
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Madden
Son · 1940 · age 30 · b. ~1910 · Illinois
★ You are viewing this record
Sibling
Joseph Madden
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathryn Madden
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marlene Madden
Sibling · 1940 · age 3
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01000-00415)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | David Lodge | 1 | Son | — | Illinois |
| 42 | Joseph Cieslak | 77 | Father-in-law | — | Poland |
| 43 | Anna Cieslak | 74 | Mother-in-law | — | Germany |
| 45 | Ethel Madden | 55 | Head | — | Wisconsin |
| 46 | Joseph Madden | 21 | Son | Laborer | Illinois |
| 47 | Kathryn Madden | 15 | Daughter | — | Illinois |
| 48 | William Madden THIS PERSON | 30 | Son | Shipper | Illinois |
| 49 | Eva Madden | 29 | Daughter-in-law | Timekeeper | Virginia |
| 50 | Marlene Madden | 3 | Daughter | — | Illinois |
| 51 | John Paulatich | 61 | Head | Cleaner | Illinois |
| 52 | Henry Paulatich | 30 | Son | Cleaning Inquirer | Illinois |
| 53 | Edward Cook | 69 | Head | Watchman | Illinois |
| 54 | Ida Cook | 67 | Wife | — | Germany |
| 55 | Edward Hoffman | 29 | Son-in-law | Salesman | Illinois |
| 56 | Arlene Hoffman | 21 | Daughter | — | Illinois |
| 57 | Harold Hoffman | 9 | Grandson | — | Illinois |
| 58 | Dorothy Hoffman | 7 | Granddaughter | — | Illinois |
| 59 | Robert Hoffman | 5 | Grandson | — | Florida |
| 60 | Linda Hoffman | 3 | Granddaughter | — | Illinois |
| 61 | Raymond Hoffman | 0 | Son | — | Illinois |
| 62 | Chester Day | 42 | Head | Switchman | Illinois |
| 63 | Nelli Day | 45 | Sister | — | Indiana |
| 64 | Anna Day | 76 | Mother | — | Ohio |
| 65 | Elizabeth Root | 62 | Head | — | Germany |
| 66 | Elizabeth Root | 33 | Daughter | Cashier | Illinois |
| 67 | Marion Root | 23 | Daughter | Stenographer | Illinois |
| 68 | Hugh Replogle | 32 | Head | Engineer | Indiana |
| 69 | Mabel Replogle | 36 | Wife | — | Illinois |
| 70 | Nona Replogle | 6 | Daughter | — | Illinois |
| 71 | John Ryan | 70 | Lodger | — | Illinois |
| 72 | Merritt Chase | 44 | Head | Salesman | Illinois |
| 73 | Gladys Chase | 43 | Wife | — | Illinois |
| 74 | Jean Chase | 12 | Daughter | — | Illinois |
| 75 | Amanda Wilson | 65 | Mother-in-law | — | Sweden |
| 76 | Warren Parson | 49 | Head | Maintenance | Pennsylvania |
| 77 | Ella Parson | 49 | Wife | — | Pennsylvania |
| 78 | Katherine Parson | 26 | Daughter | Detail Clerk | Pennsylvania |
| 79 | Olive Parson | 24 | Daughter | Recorder | Pennsylvania |
| 80 | Wayne Parson | 20 | Son | Errand Boy | Ohio |
Pedigree Summary
William + 3 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)