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John Roach — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Roach across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Roach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1926 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Alicia Roach | Daughter | — | 17 | ~1923 |
| Frances Roach | Daughter | — | 19 | ~1921 |
| John Roach | Head | — | 42 | ~1898 |
| James Roach | Son | — | 16 | ~1924 |
| John Roach | Son | — | 14 | ~1926 |
| Peter Roach | Son | — | 11 | ~1929 |
| Mary Roach | Spouse | — | 39 | ~1901 |
Census Appearances
Son, age 4
Suffolk, Massachusetts · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roche |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Rhode Island |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 14
Suffolk-County, Massachusetts · implied b. ~1926 — 7 household members
| Surname | Roach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Roach across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Roach
Son · 1940 · age 14 · b. ~1926 · Massachusetts
★ You are viewing this record
Sibling
Alicia Roach
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Roach
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peter Roach
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Roach
Sibling · 1940 · age 16
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-t0627-01661-00426)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Iannuzzi | 50 | Head | Tailor | Italy |
| 2 | Lena Iannuzzi | 47 | Wife | — | Italy |
| 3 | Dominic Iannuzzi | 29 | Son | Chauffeur | Massachusetts |
| 4 | Joseph Iannuzzi | 24 | Son | Elevator Op | Massachusetts |
| 5 | Mary Iannuzzi | 15 | Daughter | — | Massachusetts |
| 6 | Lorenzo Palmeri | 34 | Head | Cook | Italy |
| 7 | Linda Palmeri | 32 | Wife | — | Italy |
| 8 | Lawrence Palmeri | 11 | Son | — | Massachusetts |
| 9 | Blenda Palmeri | 5 | Son | — | Massachusetts |
| 10 | Antony Palmeri | 2 | Son | — | Massachusetts |
| 11 | James Palmeri | 0 | Son | — | Massachusetts |
| 12 | Margaret Doyle | 31 | Head | — | Massachusetts |
| 13 | Elizabeth Doyle | 11 | Daughter | — | Massachusetts |
| 14 | Robert Doyle | 9 | Son | — | Massachusetts |
| 15 | Joseph Doyle | 8 | Son | — | Massachusetts |
| 16 | Phillip Doyle | 7 | Son | — | Massachusetts |
| 17 | Mary Doyle | 5 | Daughter | — | Massachusetts |
| 18 | Salvatore Di Pietro | 46 | Head | Laborer | Italy |
| 19 | Rose Di Pietro | 45 | Wife | — | Italy |
| 20 | Ralph Di Pietro | 24 | Son | Laborer | Massachusetts |
| 21 | Angelina Di Pietro | 19 | Daughter | Machine Operator | Massachusetts |
| 22 | Viola Di Pietro | 17 | Daughter | — | Massachusetts |
| 23 | Frank Di Pietro | 11 | Son | — | Massachusetts |
| 24 | Alfonso Girolamo | 46 | Lodger | Iron Worker | Italy |
| 25 | Charlotte Lewis | 48 | Head | — | New York |
| 26 | George Lewis | 23 | Son | Coach | Massachusetts |
| 27 | James Lewis | 23 | Son | Professional Player | Massachusetts |
| 28 | John Lewis | 19 | Son | General Work | Massachusetts |
| 29 | Winifred Lewis | 17 | Daughter | Corridor | Massachusetts |
| 30 | John Roach | 42 | Head | Janitor | New York |
| 31 | Mary Roach | 39 | Wife | — | Ireland |
| 32 | Frances Roach | 19 | Daughter | — | Massachusetts |
| 33 | Alicia Roach | 17 | Daughter | — | Massachusetts |
| 34 | James Roach | 16 | Son | — | Massachusetts |
| 35 | John Roach THIS PERSON | 14 | Son | — | Massachusetts |
| 36 | Peter Roach | 11 | Son | — | Massachusetts |
| 37 | Louis Johnson | 55 | Head | Longshoreman | North Carolina |
| 38 | Daisy Johnson | 50 | Wife | — | Georgia |
| 39 | Nicholas Iacobbe | 50 | Head | Machine Operator | Italy |
| 40 | Angelina Iacobbe | 49 | Wife | — | Italy |
Related Census Records
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)