JM
James Mahoney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Muskegon-County, Michigan
Our Model Tree links this James Mahoney across the 1910, 1920, 1930 and 1940 US Censuses in Muskegon-County, Michigan (XGBoost, ~Confirmed), with identified parents James & James — first a head (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Muskegon-County, Michigan |
| Surname | Mahoney |
| Given Name | James J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Whitehall village |
| 1935 Residence (County) | Muskegon |
| Additional Details | |
| Occupation | Leather finisher |
| Industry | Tannery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Leather Finisher |
| Township / Ward | Whitehall Village |
| Est. Birth Year | ~1907 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Beulah Mahoney | Spouse | — | 38 | ~1902 |
| James Mahoney | Head | — | 33 | ~1907 |
| Francis Mahoney | Son | — | 8 | ~1932 |
Census Appearances
1910
Muskegon, Michigan
Son, age 3
Muskegon, Michigan · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1920
Muskegon, Michigan
Son, age 13
Muskegon, Michigan · implied b. ~1907 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Muskegon, Michigan
Son, age 23
Muskegon, Michigan · implied b. ~1907 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Laborer |
| Industry | Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Muskegon-County, Michigan
Head, age 33
Muskegon-County, Michigan · implied b. ~1907 — 3 household members
| Surname | Mahoney |
| Given Name | James J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Whitehall village |
| 1935 Residence (County) | Muskegon |
| Occupation | Leather finisher |
| Industry | Tannery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Mahoney (~0.92 confidence) and father James Mahoney (~0.92 confidence) and father Jas Mahoney (~0.92 confidence) and mother Bertha Mahoney (~0.92 confidence) and mother Bertha Mahoney (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Mahoney
b. ~1842
Source father
● Household
· direct · ~0.92
Father
James Mahoney
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Jas Mahoney
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Bertha Mahoney
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Bertha Mahoney
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mahoney
Head · 1940 · age 33 · b. ~1907 · Michigan
★ 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 — Muskegon-County, Michigan
Open full size
1940 US Federal Census — Muskegon-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01796-00866)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bernard Dreeskey | 49 | Head | Proprietor - Tailor | Michigan |
| 2 | Eunice Dreeskey | 33 | Wife | — | Illinois |
| 3 | Bernice Dreeskey | 3 | Daughter | — | Michigan |
| 4 | Ida A. Dreeskey | 79 | Head | — | Germany |
| 5 | James Knowlton | 39 | Head | Electric Plater | Illinois |
| 6 | Leila M. Knowlton | 30 | Wife | — | Michigan |
| 7 | James L. Knowlton | 7 | Son | — | Michigan |
| 8 | Raymond R. Turner | 54 | Head | — | Michigan |
| 9 | Elsie P. Turner | 48 | Wife | — | Michigan |
| 10 | Wilford Carlson | 41 | Head | Decorator | Michigan |
| 11 | Margie A. Carlson | 31 | Wife | — | Michigan |
| 12 | John O. Carlson | 76 | Head | — | Sweden |
| 13 | Hannah Carlson | 74 | Wife | — | Sweden |
| 14 | Emil Carlson | 48 | Son | Laborer | Michigan |
| 15 | Elmer M. Stahl | 29 | Head | Machine Operator | Indiana |
| 16 | Gladys Stahl | 30 | Wife | — | Michigan |
| 17 | Johanna Pierson | 77 | Head | — | Norway |
| 18 | Carl J. Pierson | 46 | Son | Auto Mechanic | Michigan |
| 19 | Joseph L. Martin | 40 | Head | Laborer | Kansas |
| 20 | Ora N. Martin | 39 | Wife | — | Kansas |
| 21 | Beatrice M. Martin | 14 | Daughter | — | Kansas |
| 22 | Dennis A. Martin | 3 | Son | — | Michigan |
| 23 | John J. Connell | 55 | Head | Leather Finisher | Michigan |
| 24 | Colleen L. Connell | 16 | Daughter | Usher | Michigan |
| 25 | Marjorie Perrier | 48 | Housekeeper | Housework | Michigan |
| 26 | Etta E. Sethman | 74 | Head | — | Sweden |
| 27 | William H. Spore | 71 | Lodger | Machinist | Illinois |
| 28 | Leo O. Larson | 60 | Lodger | Leather Finisher | Michigan |
| 29 | Charlie Swenson | 74 | Head | — | Sweden |
| 30 | Emma Swenson | 70 | Wife | — | Sweden |
| 31 | Kenneth C. Shulty | 28 | Head | Carpenter | Michigan |
| 32 | Elma J. Shulty | 25 | Wife | — | Michigan |
| 33 | Eunice C. Smith | 66 | Mother-in-law | — | Michigan |
| 34 | James J. Mahoney THIS PERSON | 33 | Head | Leather Finisher | Michigan |
| 35 | Beulah Mahoney | 38 | Wife | Waitress | Michigan |
| 36 | Francis J. Mahoney | 8 | Son | — | Michigan |
| 37 | Raymond J. Carlson | 18 | Head | — | Michigan |
| 38 | Fred C. Gentz | 53 | Head | Bartender | New Jersey |
| 39 | Lillian L. Gentz | 58 | Wife | — | Illinois |
| 40 | Lucille Long | 19 | Lodger | Waitress | Michigan |
Pedigree Summary
James
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)