JM
John Mooney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Mooney across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Mooney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1928 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Catherine Mooney | Spouse | — | 39 | ~1901 |
| Eugene Mooney | Son | — | 11 | ~1929 |
| Francis Mooney | Son | — | 2 | ~1938 |
| John Mooney | Son | — | 12 | ~1928 |
| David Mooney | Son | — | 7 | ~1933 |
| Catherine Mooney | Daughter | — | 9 | ~1931 |
| Thomas Mooney | Son | — | 5 | ~1935 |
| John Mooney | Head | — | 42 | ~1898 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 2
Middlesex, Massachusetts · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Meaney |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 12
Middlesex-County, Massachusetts · implied b. ~1928 — 8 household members
| Surname | Mooney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| 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 John Mooney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mooney
Son · 1940 · age 12 · b. ~1928 · Massachusetts
★ You are viewing this record
Sibling
Eugene Mooney
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mooney
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mooney
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Mooney
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mooney
Sibling · 1940 · age 5
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01702-00059)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Daniel Fraser | 79 | Head | — | Canada-English |
| 2 | Harriet Fraser | 60 | Wife | — | Canada-English |
| 3 | Kenneth Fraser | 23 | Son | Conductor | Massachusetts |
| 4 | Joseph Amentas | 45 | Head | Hairdresser | Italy |
| 5 | Antoinette Amentas | 43 | Wife | — | Massachusetts |
| 6 | George Amentas | 16 | Son | — | Massachusetts |
| 7 | Gloria Amentas | 6 | Daughter | — | Massachusetts |
| 8 | Michael Mooney | 72 | Head | — | Eire |
| 9 | Mary Mooney | 76 | Wife | — | Eire |
| 10 | Thomas Mooney | 43 | Son | Lawyer | Massachusetts |
| 11 | Stephen Mooney | 35 | Son | Milkman | Massachusetts |
| 12 | John Mooney | 42 | Head | Meat Cutter | Massachusetts |
| 13 | Catherine Mooney | 39 | Wife | — | Massachusetts |
| 14 | John Mooney THIS PERSON | 12 | Son | — | Massachusetts |
| 15 | Eugene Mooney | 11 | Son | — | Massachusetts |
| 16 | Catherine Mooney | 9 | Daughter | — | Massachusetts |
| 17 | David Mooney | 7 | Son | — | Massachusetts |
| 18 | Thomas Mooney | 5 | Son | — | Massachusetts |
| 19 | Francis Mooney | 2 | Son | — | Massachusetts |
| 20 | Thomas Walsh | 26 | Head | Checker | Eire |
| 21 | Catherine Walsh | 21 | Wife | — | Massachusetts |
| 22 | Catherine Walsh | 1 | Daughter | — | Massachusetts |
| 23 | Sarah Fitzgerald | 52 | Mother | — | Eire |
| 24 | Louis St. Louis | 29 | Head | Truck Driver | Massachusetts |
| 25 | Elizabeth St. Louis | 29 | Wife | — | Massachusetts |
| 26 | Louis St. Louis | 10 | Son | — | Massachusetts |
| 27 | Albert St. Louis | 8 | Son | — | Massachusetts |
| 28 | Phyllis St. Louis | 7 | Daughter | — | Massachusetts |
| 29 | Peter St. Louis | 3 | Son | — | Massachusetts |
| 30 | James St. Louis | 1 | Son | — | Massachusetts |
| 31 | Joseph Fitzgerald | 52 | Father-in-law | Chauffeur | Massachusetts |
| 32 | Phyllis Berube | 23 | Boarder | Truck Driver | Massachusetts |
| 33 | Cosmo Speranza | 46 | Head | Maker Of Fish Cakes | Italy |
| 34 | Regina Speranza | 37 | Wife | — | Italy |
| 35 | Vincent Speranza | 17 | Son | — | Massachusetts |
| 36 | Joseph Speranza | 15 | Son | — | Massachusetts |
| 37 | Mario Speranza | 14 | Son | — | Massachusetts |
| 38 | Mary Speranza | 12 | Daughter | — | Massachusetts |
| 39 | Armando Speranza | 11 | Son | — | Massachusetts |
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)