JM
James Mahoney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this James Mahoney across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 5-person household.
Age 49
b. ~1891
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Mahoney |
| Given Name | James E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | INDIANAPOLIS |
| 1935 Residence (County) | MARION |
| Additional Details | |
| Occupation | Shipping clerk |
| Industry | Wholesale Drug House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1456 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Shipping Clerk |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1891 |
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 |
|---|---|---|---|---|
| James Mahoney | Head | — | 49 | ~1891 |
| Martha Mahoney | Spouse | — | 49 | ~1891 |
| James Mahoney | Son | — | 25 | ~1915 |
| Rita Mahoney | Daughter | — | 15 | ~1925 |
| Margaret Mahoney | Daughter | — | 13 | ~1927 |
Census Appearances
1920
Marion, Indiana
Head, age 29
Marion, Indiana · implied b. ~1891 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ireland |
| Occupation | Shipping Clerk |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Head, age 39
Marion, Indiana · implied b. ~1891 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 27 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Irish Free State |
| Occupation | Shipping Clerk |
| Industry | Drug Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 23.00 |
| Veteran | Yes WW |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Head, age 49
Marion-County, Indiana · implied b. ~1891 — 5 household members
| Surname | Mahoney |
| Given Name | James E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | INDIANAPOLIS |
| 1935 Residence (County) | MARION |
| Occupation | Shipping clerk |
| Industry | Wholesale Drug House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1456 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Mahoney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mahoney
Head · 1940 · age 49 · b. ~1891 · Indiana
★ 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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01132-00298)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harvey Robinson | 59 | Head | Proprietor | Indiana |
| 2 | Edna Robinson | 51 | Wife | — | Indiana |
| 4 | William Hafner | 51 | Head | Proprietor | Virginia |
| 5 | Lula Hafner | 51 | Wife | — | Virginia |
| 6 | Harold Hafner | 23 | Son | Insulator | Indiana |
| 7 | Harvey Stafford | 52 | Head | Shoe Repairman | Ohio |
| 8 | Calvin Stafford | 15 | Son | — | Indiana |
| 9 | Dwight Stafford | 11 | Son | — | Indiana |
| 10 | Bart Williamson | 28 | Head | Inspector | Indiana |
| 11 | La Verna Williamson | 25 | Wife | — | Indiana |
| 12 | Bart J. Williamson | 4 | Son | — | Indiana |
| 13 | Harry Williamson | 26 | Head | Press Operator | Indiana |
| 14 | Helen Williamson | 26 | Wife | — | Indiana |
| 15 | Lorena H. Williamson | 2 | Daughter | — | Indiana |
| 16 | Earl Pulse | 28 | Head | Electric-Typer Painter | Indiana |
| 17 | Eva Pulse | 27 | Wife | — | Indiana |
| 18 | Barbara Pulse | 1 | Daughter | — | Indiana |
| 19 | Arnold Edwards | 42 | Head | Machinist | Indiana |
| 20 | Helen Edwards | 36 | Wife | — | Indiana |
| 21 | Lester Baker | 19 | Step son | Wrapper | Indiana |
| 22 | Owen Nealy | 47 | Head | Maintenance Man | Indiana |
| 23 | Ellen Nealy | 44 | Wife | — | Virginia |
| 24 | Robert Nealy | 23 | Son | Laborer | Indiana |
| 25 | Myron Nealy | 21 | Son | Cab Driver | Indiana |
| 26 | Ruby Nealy | 10 | Daughter | — | Indiana |
| 27 | Donnad Dooley | 48 | Head | Lieutenant Policeman | Indiana |
| 28 | Ruth Dooley | 51 | Wife | — | Indiana |
| 29 | John H. Batch | 44 | Head | Motorman | Indiana |
| 30 | Bertha L. Batch | 47 | Wife | — | Indiana |
| 31 | Helen L. Batch | 6 | Daughter | — | Indiana |
| 32 | James E. Mahoney THIS PERSON | 49 | Head | Shipping Clerk | Indiana |
| 33 | Martha J. Mahoney | 49 | Wife | — | Indiana |
| 34 | James Joseph Mahoney | 25 | Son | Machinist Apprentice | Indiana |
| 35 | Rita Mahoney | 15 | Daughter | — | Indiana |
| 36 | Margaret Ann Mahoney | 13 | Daughter | — | Indiana |
| 37 | James M. Phutman | 64 | Head | — | Indiana |
| 38 | Estella Phutman | 64 | Wife | — | Indiana |
| 39 | Thomas C. Kopp | 51 | Head | Contractor | Ireland |
| 40 | Mary E. Kopp | 51 | Wife | — | Indiana |
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)