JM
James Mahoney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Nebraska
Our Model Tree links this James Mahoney across the 1930 and 1940 US Censuses in Boone-County, Nebraska (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 11-person household.
Age 54
b. ~1886
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Nebraska |
| Surname | Mahoney |
| Given Name | James O. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Nance |
| Additional Details | |
| Occupation | farmer |
| Industry | farming |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 452 |
| Highest Grade | G 8 |
| 1935 Residence | Nebraska |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Pleasant Valley Precinct |
| Est. Birth Year | ~1886 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Arnold Mahoney | Son | — | 20 | ~1920 |
| Mary Mahoney | Daughter | — | 18 | ~1922 |
| James Mahoney | Head | — | 54 | ~1886 |
| Raymond Mahoney | Son | — | 21 | ~1919 |
| Fern Mahoney | Daughter | — | 6 | ~1934 |
| Ronald Mahoney | Son | — | 2 | ~1938 |
| Robert Mahoney | Son | — | 13 | ~1927 |
| Eugene Mahoney | Son | — | 8 | ~1932 |
| Leo Mahoney | Son | — | 4 | ~1936 |
| John Mahoney | Son | — | 16 | ~1924 |
| Vesta Mahoney | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Dixon, Nebraska
Head, age 43
Dixon, Nebraska · implied b. ~1887 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 30 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Wisconsin |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Boone-County, Nebraska
Head, age 54
Boone-County, Nebraska · implied b. ~1886 — 11 household members
| Surname | Mahoney |
| Given Name | James O. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Nance |
| Occupation | farmer |
| Industry | farming |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 452 |
| Highest Grade | G 8 |
| 1935 Residence | Nebraska |
| 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 Mahoney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mahoney
Head · 1940 · age 54 · b. ~1886 · Nebraska
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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 — Boone-County, Nebraska
Open full size
1940 US Federal Census — Boone-County, Nebraska
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02236-00908)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donna Casey | 12 | daughter | — | Nebraska |
| 2 | Spencer Casey | 5 | son | — | Nebraska |
| 3 | Carl Haase | 54 | head | Farmer | Nebraska |
| 4 | Anna Haase | 52 | wife | — | Nebraska |
| 5 | Gerald Haase | 22 | son | Farmer | Nebraska |
| 6 | Lloyd Haase | 19 | son | Farmer | Nebraska |
| 7 | Bernice Haase | 17 | daughter | — | Nebraska |
| 8 | Vernon Haase | 14 | son | — | Nebraska |
| 9 | Delmar Haase | 11 | son | Farmer | Nebraska |
| 10 | Joe Wettneby | 46 | head | — | Bohemia |
| 11 | Pauline Wettneby | 39 | wife | — | Nebraska |
| 12 | Frank Wettneby | 21 | son | Farming | Nebraska |
| 13 | Joe Wettneby | 21 | son | Farming | Nebraska |
| 14 | Libby Wettneby | 19 | daughter | Hired Girl | Nebraska |
| 15 | Milo Wettneby | 17 | son | — | Nebraska |
| 16 | Marie Wettneby | 15 | daughter | — | Nebraska |
| 17 | Mildred Wettneby | 13 | daughter | — | Nebraska |
| 18 | Claus O. Carlson | 60 | head | Farmer | Sweden |
| 19 | Alfred Carlson | 53 | wife | — | Sweden |
| 20 | Arthur Carlson | 21 | son | Farming | Nebraska |
| 21 | James O. Mahoney THIS PERSON | 54 | head | Farmer | Iowa |
| 22 | Vesta Mahoney | 39 | wife | — | Nebraska |
| 23 | Raymond Mahoney | 21 | son | Farming | Nebraska |
| 24 | Arnold Mahoney | 20 | son | Farming | Nebraska |
| 25 | Mary Ann Mahoney | 18 | daughter | — | Nebraska |
| 26 | John Mahoney | 16 | son | Farming | Nebraska |
| 27 | Robert Mahoney | 13 | son | — | Nebraska |
| 28 | Eugene Mahoney | 8 | son | — | Nebraska |
| 29 | Fern Mahoney | 6 | daughter | — | Nebraska |
| 30 | Leo Mahoney | 4 | son | — | Nebraska |
| 31 | Ronald Mahoney | 2 | son | — | Nebraska |
| 32 | Carl Zipp | 53 | head | Farmer | Nebraska |
| 33 | Gertie Zipp | 44 | wife | — | Nebraska |
| 34 | Merlin Zipp | 21 | son | Farming | Nebraska |
| 35 | Violet Zipp | 17 | daughter | — | Nebraska |
| 36 | Robert Zipp | 10 | son | — | Nebraska |
| 37 | Ruby Zipp | 9 | daughter | — | Nebraska |
| 38 | Velma Zipp | 5 | daughter | — | Nebraska |
| 39 | Maynard Zipp | 3 | son | — | Nebraska |
| 40 | Frank Zipp | 49 | head | Farmer | Nebraska |
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)