JM
James Madden — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mchenry-County, Illinois
Our Model Tree links this James Madden across the 1910, 1920, 1930 and 1940 US Censuses in Mchenry-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1858), then head of a 4-person household.
Age 82
b. ~1858
Male
Head
Born: Wisconsin
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Mchenry-County, Illinois |
| Surname | Madden |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 82 |
| Marital Status | Widowed |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Burton township |
| 1935 Residence (County) | McHenry |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Burton Township |
| Est. Birth Year | ~1858 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Samuel Madden | Son | — | 52 | ~1888 |
| Mary Harms | Daughter | — | 41 | ~1899 |
| James Madden | Head | — | 82 | ~1858 |
| Lloyd Harms | Other | — | 15 | ~1925 |
Census Appearances
1910
Mchenry, Illinois
Head, age 53
Mchenry, Illinois · implied b. ~1857 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Years Married | 17 |
| Father's Birthplace | Ire-Eng |
| Mother's Birthplace | Ire-Eng |
| Occupation | Laborer |
| Industry | Odd Jobs |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1920
Mchenry, Illinois
Head, age 61
Mchenry, Illinois · implied b. ~1859 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Farm Work |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Mchenry, Illinois
Head, age 73
Mchenry, Illinois · implied b. ~1857 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Wisconsin |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Mchenry-County, Illinois
Head, age 82
Mchenry-County, Illinois · implied b. ~1858 — 4 household members
| Surname | Madden |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 82 |
| Marital Status | Widowed |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Burton township |
| 1935 Residence (County) | McHenry |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 James Madden across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Madden
Head · 1940 · age 82 · b. ~1858 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Mchenry-County, Illinois
Open full size
1940 US Federal Census — Mchenry-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00840-00273)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William A. Stewart | 45 | Head | Farmer | Illinois |
| 2 | Nellie E. Stewart | 45 | Wife | — | Wisconsin |
| 3 | Alice M. Stewart | 18 | Daughter | Stenographer | Illinois |
| 4 | Helen L. Stewart | 16 | Daughter | — | Illinois |
| 5 | Leslie Cooper | 23 | Hired Hand | Farm Hand | Illinois |
| 6 | Arthur B. Simpson | 30 | Head | Farmer | Illinois |
| 7 | Florence Simpson | 29 | Wife | — | Illinois |
| 8 | George Richards | 20 | Hired Hand | Farm Hand | Ind. State |
| 9 | James Madden THIS PERSON | 82 | Head | — | Wisconsin |
| 10 | Samuel Madden | 52 | Son | — | Illinois |
| 11 | Mary Harms | 41 | Daughter | Saleswoman | Illinois |
| 12 | Lloyd C. Harms | 15 | Grandson | — | Illinois |
| 13 | Paul R. Boehmer | 51 | Head | Farmer | Wisconsin |
| 14 | Alice A. Boehmer | 44 | Wife | — | Illinois |
| 15 | Lavern E. Whiting | 28 | Hired Hand | Farm Hand | Illinois |
| 16 | Charles L. Steven | 65 | Head | Farmer | Illinois |
| 17 | Frances Steven | 53 | Wife | — | Illinois |
| 18 | Hazel Steven | 22 | Daughter | Stenographer | Illinois |
| 19 | Burton Steven | 20 | Son | Farm Hand | Illinois |
| 20 | Robert T. Steven | 18 | Son | Farm Hand | Illinois |
| 21 | Franklin E. Steven | 16 | Son | — | Illinois |
| 22 | Edith L. Steven | 14 | Daughter | — | Illinois |
| 23 | Charles L. Steven | 12 | Son | — | Illinois |
| 24 | John Heng | 50 | Hired Hand | Farm Hand | Germany |
| 25 | Edith A. Thompson | 79 | Aunt | — | Illinois |
| 26 | Ben J. May | 45 | Head | Farmer | Illinois |
| 27 | Emma May | 38 | Wife | — | Illinois |
| 28 | Estelle May | 19 | Daughter | House Work | Illinois |
| 29 | Shirley May | 15 | Daughter | — | Illinois |
| 30 | Bernard May | 12 | Son | — | Illinois |
| 31 | Allan May | 9 | Son | — | Illinois |
| 32 | Joan Marie May | 1 | Daughter | — | Illinois |
| 33 | Henry G. Krahn | 51 | Head | Farm Hand | Germany |
| 34 | Martha Krahn | 61 | Wife | — | Illinois |
| 35 | Elmer J. Smith | 27 | Head | Dairy Plant Worker | Wisconsin |
| 36 | Isabelle Smith | 26 | Wife | — | Illinois |
| 37 | Ora Pion | 58 | Head | — | Illinois |
| 38 | Merle Pion | 35 | Son | Laborer | Illinois |
| 39 | Herbert Equillette | 65 | Brother | Gardening | Illinois |
| 40 | Alfred Lyle Carfrey | 45 | Head | Poultry Farmer | Wisconsin |
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)