JM
James Mahoney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bristol-County, Massachusetts
Our Model Tree links this James Mahoney across the 1920, 1930 and 1940 US Censuses in Bristol-County, Massachusetts (XGBoost, ~Confirmed), with identified parents James & Bessie — first a son (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bristol-County, Massachusetts |
| Surname | Mahoney |
| Given Name | James Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | New Bedford City |
| Additional Details | |
| Highest Grade | Yes 4-C |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | New Bedford City |
| Est. Birth Year | ~1916 |
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 |
|---|---|---|---|---|
| Ethel Mahoney | Spouse | — | 50 | ~1890 |
| James Mahoney | Son | — | 24 | ~1916 |
| James Mahoney | Head | — | 63 | ~1877 |
Census Appearances
1920
Bristol, Massachusetts
Son, age 4
Bristol, Massachusetts · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James H. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Bristol, Massachusetts
Son, age 14
Bristol, Massachusetts · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James H Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Bristol-County, Massachusetts
Son, age 24
Bristol-County, Massachusetts · implied b. ~1916 — 3 household members
| Surname | Mahoney |
| Given Name | James Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | New Bedford City |
| Highest Grade | Yes 4-C |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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. Identified parents: father James Mahoney (~0.92 confidence) and mother Bessie Mahoney (~0.92 confidence) and mother Ethel Mahoney (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Mahoney
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Bessie Mahoney
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Ethel Mahoney
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mahoney
Son · 1940 · age 24 · b. ~1916 · Massachusetts
★ 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 — Bristol-County, Massachusetts
Open full size
1940 US Federal Census — Bristol-County, Massachusetts
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01700-00005)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ralph D. Gifford | 7 | Son | — | Massachusetts |
| 42 | Arthur Whipple | 53 | Head | Teacher | Massachusetts |
| 43 | Earl Eston | 20 | Ward | Draftsman | Massachusetts |
| 44 | Warren Carpenter | 36 | Head | Salesman | New York |
| 45 | Cecelia Carpenter | 33 | Wife | — | Massachusetts |
| 46 | Bruce K. Carpenter | 7 | Son | — | Massachusetts |
| 47 | Charles J. Johnson | 47 | Head | Bank Teller | Massachusetts |
| 48 | Mary B. Johnson | 45 | Wife | — | Irish Free State |
| 49 | Charles J. Jr. Johnson | 18 | Son | — | Massachusetts |
| 50 | Malcolm Richardson | 34 | Head | Instructor | Massachusetts |
| 51 | Teresa Richardson | 34 | Wife | — | Ohio |
| 52 | Thomas F. Healy | 22 | Head | Station Attendant | Massachusetts |
| 53 | Ann M. Healy | 22 | Wife | — | Massachusetts |
| 54 | Mary G. Marques | 38 | Head | Weaver | Portugal |
| 55 | Antone Marques | 15 | Son | — | Massachusetts |
| 56 | Joseph A. Foxand | 38 | Head | Dealer | Massachusetts |
| 57 | Marion L. Foxand | 34 | Wife | — | Massachusetts |
| 58 | Joseph Foxand | 10 | Son | — | Massachusetts |
| 59 | Paul G. Foxand | 6 | Son | — | Massachusetts |
| 60 | Harry Burrows | 35 | Head | Credit-Man | England |
| 61 | Alma Burrows | 37 | Wife | — | Massachusetts |
| 62 | Robert Burrows | 18 | Son | Sales-Man | Massachusetts |
| 63 | Chester Irving | 45 | Head | Clerk | Massachusetts |
| 64 | Bernice Irving | 42 | Wife | Clerk | Massachusetts |
| 65 | Arthur Milton | 46 | Head | Sign Painter | New Jersey |
| 66 | Ida Milton | 46 | Wife | — | Massachusetts |
| 67 | Beverly Milton | 17 | daughter | — | Massachusetts |
| 68 | Edward P. Bigelow | 73 | Head | Furniture Dealer | Vermont |
| 69 | Laura Bigelow | 64 | Wife | — | Missouri |
| 70 | James Mahoney | 63 | Head | Captain | Massachusetts |
| 71 | Ethel Mahoney | 50 | Wife | — | Massachusetts |
| 72 | James Jr. Mahoney THIS PERSON | 24 | Son | — | Massachusetts |
| 73 | George F. Curry | 45 | Head | Druggist | Massachusetts |
| 74 | Hattie Curry | 45 | Wife | — | Finland |
| 75 | George Curry | 21 | Son | — | Massachusetts |
| 76 | Donald Curry | 17 | Son | — | Massachusetts |
| 77 | Richard Curry | 10 | Son | — | Massachusetts |
Related Census Records
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)