JC
John Curran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Curran across the 1930 and 1940 US Censuses in Suffolk-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 | Suffolk-County, Massachusetts |
| Surname | Curran |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston 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 |
|---|---|---|---|---|
| John Curran | Son | — | 12 | ~1928 |
| Anna Curran | Daughter | — | 1 | ~1939 |
| Barbara Curran | Daughter | — | 7 | ~1933 |
| Catherine Curran | Spouse | — | 43 | ~1897 |
| Mark Curran | Head | — | 45 | ~1895 |
| Mary Curran | Daughter | — | 11 | ~1929 |
| Joseph Curran | Son | — | 13 | ~1927 |
| Michael Curran | Son | — | 9 | ~1931 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curran |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada French |
| Mother's Birthplace | Vermont |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 12
Suffolk-County, Massachusetts · implied b. ~1928 — 8 household members
| Surname | Curran |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| 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 Curran across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Curran
Son · 1940 · age 12 · b. ~1928 · Massachusetts
★ You are viewing this record
Sibling
Michael Curran
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Curran
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Curran
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Curran
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Curran
Sibling · 1940 · age 1
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-t0627-01665-00354)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herbert Jeffery | 16 | Son | — | Massachusetts |
| 2 | James Jeffery | 14 | Son | — | Massachusetts |
| 3 | Esther Arnold | 28 | Lodger | — | South Carolina |
| 4 | James Arnold | 34 | Lodger | Cook | South Carolina |
| 5 | Marie Arnold | 5 | Lodger | — | South Carolina |
| 6 | Albert Knather | 37 | Head | Brakeman | Wisconsin |
| 7 | Mary Knather | 46 | Wife | — | Massachusetts |
| 8 | Albert J. Knather | 20 | Son | Messenger | Massachusetts |
| 9 | William Knather | 15 | Son | Messenger | Massachusetts |
| 10 | George Knather | 17 | Son | — | Massachusetts |
| 11 | Dorothy Knather | 15 | Daughter | — | Massachusetts |
| 12 | Francis Knather | 13 | Daughter | — | Massachusetts |
| 13 | Robert Knather | 9 | Son | — | Massachusetts |
| 14 | Mary Knather | 7 | Daughter | — | Massachusetts |
| 15 | Thomas Clark | 36 | Head | Truck Driver | Massachusetts |
| 16 | Anna Clark | 32 | Wife | — | Massachusetts |
| 17 | Ann Marie Clark | 8 | Daughter | — | Massachusetts |
| 18 | Doris Clark | 6 | Daughter | — | Massachusetts |
| 19 | Leona Clark | 4 | Daughter | — | Massachusetts |
| 20 | Helen Clark | 3 | Daughter | — | Massachusetts |
| 21 | Beverly Clark | 1 | Daughter | — | Massachusetts |
| 22 | Charles Flynn | 46 | Head | Watchman | Massachusetts |
| 23 | Dorothy Flynn | 22 | Daughter | — | Massachusetts |
| 24 | William Flynn | 21 | Son | Laundry Work | Massachusetts |
| 25 | James Flynn | 19 | Son | Newspaper | Massachusetts |
| 26 | Charles Jr. Flynn | 17 | Son | Newspaper | Massachusetts |
| 27 | John Flynn | 16 | Son | Newspaper | Massachusetts |
| 28 | Anna Flynn | 14 | Daughter | — | Massachusetts |
| 29 | Gertrude Flynn | 13 | Daughter | — | Massachusetts |
| 30 | Joseph Canavan | 43 | Head | Laborer | Eire |
| 31 | John Canavan | 5 | Son | — | Massachusetts |
| 32 | Mark Curran | 45 | Head | Laborer | Eire |
| 33 | Catherine Curran | 43 | Wife | — | Eire |
| 34 | Joseph Curran | 13 | Son | — | Massachusetts |
| 35 | John Curran THIS PERSON | 12 | Son | — | Massachusetts |
| 36 | Mary Curran | 11 | Daughter | — | Massachusetts |
| 37 | Michael Curran | 9 | Son | — | Massachusetts |
| 38 | Anna Curran | 1 | Daughter | — | Massachusetts |
| 39 | Barbara Curran | 7 | Daughter | — | Massachusetts |
| 40 | Oscar Purvels | 80 | Head | — | Belgium |
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)