JD
James Duffy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Reno-County, Kansas
Our Model Tree links this James Duffy across the 1920, 1930 and 1940 US Censuses in Reno-County, Kansas (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Reno-County, Kansas |
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Hutchinson City |
| 1935 Residence (County) | Reno |
| Additional Details | |
| Occupation | Wholesale Hardware |
| Industry | PW |
| Class of Worker | 750 |
| Highest Grade | C 3 |
| 1935 Residence | 48 |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Wholesale Hardware |
| Township / Ward | Hutchinson City |
| Est. Birth Year | ~1918 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Duffy | Daughter | — | 20 | ~1920 |
| Helen Duffy | Daughter | — | 24 | ~1916 |
| Jas Duffy | Head | — | 45 | ~1895 |
| James Duffy | Son | — | 22 | ~1918 |
| Helen Duffy | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Reno, Kansas
Son, age 2
Reno, Kansas · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | California |
| Mother's Birthplace | Kansas |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Reno, Kansas
Son, age 13
Reno, Kansas · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | James E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | California |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Reno-County, Kansas
Son, age 22
Reno-County, Kansas · implied b. ~1918 — 5 household members
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Hutchinson City |
| 1935 Residence (County) | Reno |
| Occupation | Wholesale Hardware |
| Industry | PW |
| Class of Worker | 750 |
| Highest Grade | C 3 |
| 1935 Residence | 48 |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Duffy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Duffy (~0.92 confidence) and father James Duffy (~0.92 confidence) and mother Helen Duffy (~0.92 confidence) and mother Helen Duffy (~0.92 confidence) and father Jas Duffy (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Duffy
b. ~1885
Source father
● Household
· direct · ~0.92
Father
James Duffy
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Helen Duffy
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Helen Duffy
b. ~1895
Source mother
● Household
· direct · ~0.92
Father
Jas Duffy
b. ~1895
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Duffy
Son · 1940 · age 22 · b. ~1918 · Kansas
★ You are viewing this record
Sibling
Helen Duffy
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Duffy
Sibling · 1940 · age 20
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 — Reno-County, Kansas
Open full size
1940 US Federal Census — Reno-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01253-00267)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Paul Leeper | 32 | Head | Own Office | Missouri |
| 42 | Alice Leeper | 29 | Wife | — | Missouri |
| 43 | Paul Theodore Leeper | 1 | Son | — | Kansas |
| 44 | Jas J. Duffy | 45 | Head | Wholesale Dry Goods | California |
| 45 | Helen Duffy | 45 | Wife | — | Kansas |
| 46 | Helen Dorothy Duffy | 24 | Daughter | Employment Office | Kansas |
| 47 | James Duffy THIS PERSON | 22 | Son | Wholesale Hardware | Kansas |
| 48 | Dorothy Duffy | 20 | Daughter | — | Kansas |
| 49 | Robert S. Mcbride | 49 | Head | Retail Signs | Missouri |
| 50 | Walter E. Mcbride | 39 | Brother | Retail Signs | Missouri |
| 51 | Mother Mcbride | 76 | Mother | — | Kentucky |
| 52 | Lizzie Carlile | 62 | Maid | Private Home | Illinois |
| 53 | Arthur Sedmock|Sedmoch | 53 | Head | Wholesale Paper & Clothing | Wisconsin |
| 54 | Harriett Sedmock|Sedmoch | 54 | Wife | — | Wisconsin |
| 55 | Mary Maxwell | 58 | Head | — | Kansas |
| 56 | Kathryn Maxwell | 55 | Sister | — | Kansas |
| 57 | Arthur S. Schroll | 58 | Head | Wholesale Hardware | Indiana |
| 58 | Phoebe Jane Schroll | 50 | Wife | — | Iowa |
| 59 | Teddy Vance Schroll | 22 | Son | Wholesale Hardware | Kansas |
| 60 | Jack Claire Schroll | 15 | Son | — | Kansas |
| 61 | Carl Oleson | 55 | Head | Retail Department Store | Kansas |
| 62 | Irene Oleson | 45 | Wife | — | Missouri |
| 63 | Richard Oleson | 21 | Son | — | Kansas |
| 64 | Emma Bishop | 71 | Daughter | — | Indiana |
| 65 | Edwin Hamilton | 44 | Head | State Employment Ser. | Kansas |
| 66 | Helen Hamilton | 44 | Wife | — | Kansas |
| 67 | Janet Hamilton | 18 | Daughter | — | Kansas |
| 68 | Richard Hamilton | 16 | Son | Construction Co. | Kansas |
| 69 | Joanne Hamilton | 5 | Daughter | — | Kansas |
| 70 | Nelson Smith | 74 | Head | Mortgage Investment Co. | Indiana |
| 71 | Edna C. Q. Smith | 71 | Wife | — | Ohio |
| 72 | Addison Meschke | 31 | Head | Wholesale Candy Co. | Kansas |
| 73 | Janet Meschke | 29 | Wife | — | Kansas |
| 74 | John Meschke | 3 | Son | — | Kansas |
| 75 | Barbara Toews | 24 | Maid | Private Home | Kansas |
| 76 | Arthur S. Paul | 54 | Head | Railroad | Connecticut |
| 77 | Mabel Helen Paul | 55 | Wife | — | Illinois |
| 78 | John Paul | 19 | Son | — | Missouri |
| 79 | Robert Vail | 39 | Head | Salt Company | Illinois |
| 80 | Lois Vail | 38 | Wife | — | Illinois |
Pedigree Summary
James + 2 siblings
Gen 1 · 5 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)