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John Roche — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Duval-County, Florida
Our Model Tree links this John Roche across the 1930 and 1940 US Censuses in Duval-County, Florida (XGBoost, ~Confirmed) — first a head (b.~1907), then head of a 6-person household.
Age 33
b. ~1907
Male
Head
Born: Florida
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Duval-County, Florida |
| Surname | Roche |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Additional Details | |
| Occupation | Caretaker |
| Industry | Municipal Park |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1320 |
| Highest Grade | H-2 |
| 1935 Residence | Florida |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Caretaker |
| Township / Ward | Precinct 29 |
| Est. Birth Year | ~1907 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Roche | Son | — | 3 | ~1937 |
| John Roche | Head | — | 33 | ~1907 |
| Frederick Roche | Son | — | 2 | ~1938 |
| Helen Smith | Daughter | — | 13 | ~1927 |
| Betty Smith | Daughter | — | 14 | ~1926 |
| Arietta Roche | Spouse | — | 30 | ~1910 |
Census Appearances
1930
Duval, Florida
Head, age 25
Duval, Florida · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riches |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Florida |
| Age at First Marriage | 24 |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Fireman |
| Industry | Stationary Boiler |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Duval-County, Florida
Head, age 33
Duval-County, Florida · implied b. ~1907 — 6 household members
| Surname | Roche |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Occupation | Caretaker |
| Industry | Municipal Park |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1320 |
| Highest Grade | H-2 |
| 1935 Residence | Florida |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 Roche across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Roche
Head · 1940 · age 33 · b. ~1907 · Florida
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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 — Duval-County, Florida
Open full size
1940 US Federal Census — Duval-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00584-00432)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Wilbur C. Higginbotham | 30 | Head | Dredge Laborer | Florida |
| 42 | Mary J. Higginbotham | 26 | Wife | — | Pennsylvania |
| 43 | Jane M. Higginbotham | 7 | Daughter | — | Florida |
| 44 | Jessica Higginbotham | 6 | Daughter | — | Florida |
| 45 | Bernadine Higginbotham | 5 | Daughter | — | Florida |
| 46 | Paul D. Flick | 42 | Head | Brakeman | Illinois |
| 47 | Paul Jr. Flick | 16 | Son | — | Florida |
| 48 | John P. Flick | 14 | Son | — | Florida |
| 49 | Alvin H. Meyers | 39 | Head | Marine Engineer | South Carolina |
| 50 | Josephine Meyers | 29 | Wife | — | Florida |
| 51 | Nellie Meyers | 3 | Daughter | — | Florida |
| 52 | Sarah B. Barnette | 60 | Head | — | Iowa |
| 53 | John J. Roche THIS PERSON | 33 | Head | Caretaker | Florida |
| 54 | Arietta M. Roche | 30 | Wife | — | Georgia |
| 55 | Betty M. Smith | 14 | Daughter | — | Florida |
| 56 | Helen C. Smith | 13 | Daughter | — | Florida |
| 57 | John E. Roche | 3 | Son | — | Florida |
| 58 | Frederick W. Roche | 2 | Son | — | Florida |
| 59 | Valentine C. Brooks | 42 | Head | Car Repairer | Florida |
| 60 | Laura D. Brooks | 39 | Wife | — | Alabama |
| 61 | Richard G. Brooks | 15 | Son | — | Florida |
| 62 | John O. Brooks | 13 | Son | — | Florida |
| 63 | Marion E. Brooks | 11 | Son | — | Florida |
| 64 | William Brooks | 9 | Son | — | Florida |
| 65 | Edna C. Brooks | 1 | Daughter | — | Florida |
| 66 | Edwin J. Self | 55 | Head | Handy Man | Florida |
| 67 | Lucy E. Self | 47 | Wife | — | Florida |
| 68 | James A. Hartley | 53 | Head | Machinist | Florida |
| 69 | Clarence Hartley | 19 | Son | Sawyer'S Helper | Florida |
| 70 | Cecil W. Hartley | 19 | Son | Laborer | Florida |
| 71 | Alfred Hartley | 17 | Son | Laborer | Florida |
| 72 | Clyda Hartley | 17 | Daughter | — | Florida |
| 73 | Lois Hartley | 14 | Daughter | — | Florida |
| 74 | Norman Hartley | 16 | Nephew | Laborer | Florida |
| 75 | Sara E. Hunter | 53 | Head | — | Florida |
| 76 | Gladys Hunter | 28 | Daughter | — | Florida |
| 77 | Harold Hunter | 9 | Grandson | — | Florida |
| 78 | Catherine Hunter | 7 | Granddaughter | — | Florida |
| 79 | William J. Brooks | 25 | Head | Sawyer | Florida |
| 80 | Daisy Brooks | 23 | Wife | — | Florida |
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)