JM
James Madden — 1940 US Census Record
Model Tree available1940 United States Federal Census · Scott-County, Iowa
Our Model Tree links this James Madden across the 1920, 1930 and 1940 US Censuses in Scott-County, Iowa (XGBoost, ~Confirmed), with identified parents Amos & Emery — first a head (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Iowa |
| Surname | Madden |
| Given Name | James E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Winfield Township |
| 1935 Residence (County) | Scott |
| Additional Details | |
| Occupation | Farmer |
| Industry | Private Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 45 |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Winfield Township |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| James Madden | Head | — | 25 | ~1915 |
| Helen Madden | Spouse | — | 24 | ~1916 |
| Melvin Twigg | Other | — | 23 | ~1917 |
| Kathryn Madden | Daughter | — | 1 | ~1939 |
Census Appearances
1920
Scott, Iowa
Son, age 4
Scott, Iowa · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | James E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Scott, Iowa
Son, age 15
Scott, Iowa · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Student |
| Industry | High School |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Scott-County, Iowa
Head, age 25
Scott-County, Iowa · implied b. ~1915 — 4 household members
| Surname | Madden |
| Given Name | James E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Winfield Township |
| 1935 Residence (County) | Scott |
| Occupation | Farmer |
| Industry | Private Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 45 |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Amos Madden (~0.92 confidence) and father Emery Madden (~0.92 confidence) and mother Amanda Madden (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Amos Madden
b. ~1864
Source father
● Household
· direct · ~0.92
Father
Emery Madden
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Amanda Madden
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Madden
Head · 1940 · age 25 · b. ~1915 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Scott-County, Iowa
Open full size
1940 US Federal Census — Scott-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01203-01294)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emily D. Hansen | 62 | Wife | — | Iowa |
| 42 | Adolph H. Hansen | 40 | Son | Farmer | Iowa |
| 43 | James E. Madden THIS PERSON | 25 | Head | Farmer | Iowa |
| 44 | Helen J. Madden | 24 | Wife | — | Iowa |
| 45 | Kathryn Joan Madden | 1 | Daughter | — | Iowa |
| 46 | Melvin Twigg | 23 | Hired Man | Laborer | Iowa |
| 47 | Bartley B. Marti | 52 | Head | Farmer | Iowa |
| 48 | Rosa Marti | 49 | Wife | — | Iowa |
| 49 | John M. Marti | 29 | Head | Farmer | Iowa |
| 50 | Beulah E. Marti | 25 | Wife | — | Iowa |
| 51 | Carol Jean Marti | 3 | Daughter | — | Iowa |
| 52 | Gary Eugene Marti | 1 | Son | — | Iowa |
| 53 | Theodore B. Marti | 67 | Head | Farmer | Iowa |
| 54 | Mary C. Marti | 56 | Wife | — | Iowa |
| 55 | George Ranson | 30 | Head | Farmer | South Dakota |
| 56 | Veronica Ranson | 29 | Wife | — | Iowa |
| 57 | James L. Ranson | 5 | Son | — | Iowa |
| 58 | Mary Jean Ranson | 3 | Daughter | — | Iowa |
| 59 | Eldon Levin | 20 | Hired Man | Laborer | Iowa |
| 60 | John L. Marti | 65 | Head | Farmer | Iowa |
| 61 | Mary A. Marti | 63 | Wife | — | Iowa |
| 62 | Le Roy Twigg | 20 | Hired Man | Laborer | Iowa |
| 63 | Ralph Madden | 34 | Head | Farmer | Iowa |
| 64 | Eleanor Madden | 33 | Wife | — | Iowa |
| 65 | Robert Madden | 9 | Son | — | Iowa |
| 66 | Rebecca Madden | 6 | Daughter | — | Iowa |
| 67 | Leonard Britt | 39 | Hired Man | Laborer | Iowa |
| 68 | Francis J. Kane | 26 | Head | Farmer | Iowa |
| 69 | Florence Kane | 23 | Wife | — | Iowa |
| 70 | Annie Madden | 56 | Head | — | Iowa |
| 71 | Roy A. Madden | 26 | Son | Farmer | Iowa |
| 72 | Jean Madden | 19 | Daughter | — | Iowa |
| 73 | Vera Madden | 17 | Daughter | — | Iowa |
| 74 | Henry Willer | 42 | Hired Man | Laborer | Iowa |
| 75 | Delbert N. Untiedt | 45 | Head | Farmer | Iowa |
| 76 | Almeda A. Untiedt | 42 | Wife | — | Iowa |
| 77 | Viola E. Untiedt | 17 | Daughter | — | Iowa |
| 78 | Maurice Bultynck | 36 | Head | Farmer | Illinois |
| 79 | Celena Bultynck | 34 | Wife | — | Illinois |
| 80 | Amelia T. Bultynck | 1 | Daughter | — | Iowa |
Pedigree Summary
James
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)