JC
John Carney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Carney across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Carney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | City Of Boston |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| Walter Carney | Son | — | 13 | ~1927 |
| William Carney | Son | — | 15 | ~1925 |
| John Carney | Son | — | 11 | ~1929 |
| Edward Carney | Son | — | 21 | ~1919 |
| James Carney | Son | — | 20 | ~1920 |
| Robert Carney | Son | — | 9 | ~1931 |
| Helen Carney | Daughter | — | 12 | ~1928 |
| Walter Carney | Head | — | 40 | ~1900 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 1
Suffolk, Massachusetts · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 11
Suffolk-County, Massachusetts · implied b. ~1929 — 8 household members
| Surname | Carney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 5 |
| 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 Carney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Carney
Son · 1940 · age 11 · b. ~1929 · Massachusetts
★ You are viewing this record
Sibling
James Carney
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Carney
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Carney
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Carney
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Carney
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Carney
Sibling · 1940 · age 21
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01659-00755)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Catherine Douthey | 40 | Wife | — | Ireland |
| 42 | Frances Douthey | 11 | Daughter | — | Massachusetts |
| 43 | Catherine Murphy | 62 | Head | — | Ireland |
| 44 | Walter Murphy | 26 | Son | Janitor | Massachusetts |
| 45 | Johanna Murphy | 23 | Daughter | Seamer | Massachusetts |
| 46 | Margaret Murphy | 20 | Daughter | Typist | Massachusetts |
| 47 | John Adams | 45 | Head | Longshoreman | Massachusetts |
| 48 | Isabell Adams | 40 | Wife | — | Massachusetts |
| 49 | John Jr. Adams | 14 | Son | — | Massachusetts |
| 50 | Frederick Adams | 10 | Son | — | Massachusetts |
| 51 | Mary J. Adams | 8 | Daughter | — | Massachusetts |
| 52 | Catherine Burns | 48 | Head | — | Ireland |
| 53 | John Burns | 25 | Son | Bus Boy | Massachusetts |
| 54 | William Burns | 23 | Son | Pilot | Massachusetts |
| 55 | Eleanor Hennessey | 20 | Daughter | Clerk | Massachusetts |
| 56 | George Hennessey | 18 | Son | Attendant | Massachusetts |
| 57 | Catherine Hennessey | 16 | Daughter | — | Massachusetts |
| 58 | Irene Schena | 45 | Head | Housework | Massachusetts |
| 59 | Charles J. Schena | 27 | Son | Trucker | Massachusetts |
| 60 | Lillian Schena | 20 | Daughter | Marker | Massachusetts |
| 61 | Mary Cox | 29 | Daughter | — | Massachusetts |
| 62 | Barbara Ann Cox | 6 | Grand Daughter | — | Massachusetts |
| 63 | Robert Joseph Cox | 3 | Grand Son | — | Massachusetts |
| 64 | Sandra Jean Cox | 2 | Grand Daughter | — | Massachusetts |
| 65 | Walter Carney | 40 | Head | — | Massachusetts |
| 66 | Edward Carney | 21 | Son | Cook | Massachusetts |
| 67 | James Carney | 20 | Son | Laborer | Massachusetts |
| 68 | William Carney | 15 | Son | — | Massachusetts |
| 69 | Walter Carney | 13 | Son | — | Massachusetts |
| 70 | Helen Carney | 12 | Daughter | — | Massachusetts |
| 71 | John Carney THIS PERSON | 11 | Son | — | Massachusetts |
| 72 | Robert Carney | 9 | Son | — | Massachusetts |
| 73 | Frederick Johnson | 27 | Head | Longshoring | Massachusetts |
| 74 | Mary Johnson | 22 | Wife | — | Massachusetts |
| 75 | Ann M. Johnson | 3 | Daughter | — | Massachusetts |
| 76 | Frederick Jr. Johnson | 2 | Son | — | Massachusetts |
| 77 | Patricia Johnson | 1 | Daughter | — | Massachusetts |
| 78 | Kathleen Johnson | 0 | Daughter | — | Massachusetts |
| 79 | Mary Magee | 18 | Head | — | Ireland |
| 80 | Edward Magee | 8 | 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)