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John Costello — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Newport-County, Rhode Island
Our Model Tree links this John Costello across the 1930 and 1940 US Censuses in Newport-County, Rhode Island (XGBoost, ~Confirmed) — first a head (b.~1904), then head of a 8-person household.
Age 36
b. ~1904
Male
Head
Born: Rhode Island
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Newport-County, Rhode Island |
| Surname | Costello |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Newport |
| 1935 Residence (County) | Newport |
| Additional Details | |
| Occupation | Sheet metal worker |
| Industry | Own business |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 334 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Occupation | Sheet Metal Worker |
| Township / Ward | Newport |
| Est. Birth Year | ~1904 |
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 |
|---|---|---|---|---|
| Martha Costello | Spouse | — | 33 | ~1907 |
| John Costello | Head | — | 36 | ~1904 |
| Robert Costello | Son | — | 11 | ~1929 |
| Nancy Costello | Daughter | — | 5 | ~1935 |
| Anne Costello | Daughter | — | 9 | ~1931 |
| William Costello | Son | — | 12 | ~1928 |
| Joan Costello | Daughter | — | 4 | ~1936 |
| May Costello | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Newport, Rhode …
Head, age 26
Newport, Rhode Island · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Age at First Marriage | 22 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Watchman |
| Industry | Metal works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Newport-County, Rhode …
Head, age 36
Newport-County, Rhode Island · implied b. ~1904 — 8 household members
| Surname | Costello |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Newport |
| 1935 Residence (County) | Newport |
| Occupation | Sheet metal worker |
| Industry | Own business |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 334 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Costello across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Costello
Head · 1940 · age 36 · b. ~1904 · Rhode Island
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Newport-County, Rhode Island
Open full size
1940 US Federal Census — Newport-County, Rhode Island
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03760-00987)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Georgette W. Brown | 69 | Head | — | Rhode Island |
| 42 | Winifred Babbage | 51 | Servant | Personal Maid | England |
| 43 | Anna E. Hallquist | 39 | Servant | Waitress | Sweden |
| 44 | Alice D. Love | 45 | Servant | Parlor Maid | Rhode Island |
| 45 | Catherine Dudley | 39 | Servant | Kitchen Maid | Eire |
| 46 | Cecelia F. Maguire | 30 | Servant | Chamber Maid | No. Ireland |
| 47 | Eric Christianson | 54 | Head | Caretaker | Sweden |
| 48 | Christina Christianson | 55 | Wife | — | Sweden |
| 49 | Andrew Christianson | 17 | Son | — | Rhode Island |
| 50 | Forrest Christianson | 16 | Son | — | Rhode Island |
| 51 | Isabel Latimer | 52 | Cook | Cook | No. Ireland |
| 52 | Mary Ann Whitford | 58 | Maid | Domestic | England |
| 53 | Mary Falon | 42 | Personal maid | Domestic | Eire |
| 55 | John F. Costello THIS PERSON | 36 | Head | Sheet Metal Worker | Rhode Island |
| 56 | Martha Costello | 33 | Wife | — | Sweden |
| 57 | William Costello | 12 | Son | — | Rhode Island |
| 58 | Robert Costello | 11 | Son | — | Rhode Island |
| 59 | Anne Costello | 9 | Daughter | — | Rhode Island |
| 60 | May Costello | 7 | Daughter | — | Rhode Island |
| 61 | Nancy Costello | 5 | Daughter | — | Rhode Island |
| 62 | Joan Costello | 4 | Daughter | — | Rhode Island |
| 63 | William Mccauley | 44 | Head | Chief Electrician | New York |
| 64 | Josephine A. Mccauley | 29 | Wife | — | Rhode Island |
| 65 | William Mccauley | 10 | Son | — | Rhode Island |
| 66 | Alice E. Mccauley | 8 | Daughter | — | Rhode Island |
| 67 | Robert H. Mccauley | 5 | Son | — | Rhode Island |
| 68 | Leo Nemetz | 33 | Head | Machinist | Iowa |
| 69 | Anna M. Nemetz | 25 | Wife | — | New York |
| 70 | Valerie Ann Nemetz | 1 | Daughter | — | California |
| 71 | David Lee Nemetz | 0 | Son | — | California |
| 72 | Gertrude Walters | 40 | Head | Music Teacher | Rhode Island |
| 73 | Mary Walters | 81 | Mother | — | France |
| 74 | Henry J. Fenn | 57 | Son | Painter'S Helper | Rhode Island |
| 75 | Francis A. Fenn | 49 | Son | Painter | Rhode Island |
| 76 | Arthur La Chance | 28 | Head | Plumber | Vermont |
| 77 | Dorothea La Chance | 27 | Wife | — | Massachusetts |
| 78 | Arthur Jr. La Chance | 2 | Son | — | Massachusetts |
| 79 | Elaine La Chance | 0 | Daughter | — | Massachusetts |
| 80 | John Morris | 37 | Head | Carpenter | Scotland |
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)