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Joseph Knight — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Duval-County, Florida
Our Model Tree links this Joseph Knight across the 1920, 1930 and 1940 US Censuses in Duval-County, Florida (XGBoost, ~Confirmed) — first a head (b.~1897), then head of a 5-person household.
Age 43
b. ~1897
Male
Head
Born: Florida
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Duval-County, Florida |
| Surname | Knight |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Additional Details | |
| Occupation | Fireman |
| Industry | City Fire Dept |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 2340 |
| Highest Grade | Hs 5 |
| 1935 Residence | Same House |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Fireman |
| Township / Ward | Jacksonville |
| Est. Birth Year | ~1897 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Joseph Knight | Head | — | 43 | ~1897 |
| William Knight | Son | — | 9 | ~1931 |
| Jos Knight | Son | — | 14 | ~1926 |
| Florence Knight | Spouse | — | 40 | ~1900 |
| Dorothy Knight | Daughter | — | 18 | ~1922 |
Census Appearances
1920
Duval, Florida
Other, age 23
Duval, Florida · implied b. ~1897 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knight |
| Given Name | Joseph E. |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Fireman |
| Industry | Hospital |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Duval, Florida
Head, age 33
Duval, Florida · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knight |
| Given Name | Joseph E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Florida |
| Age at First Marriage | 24 |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Fireman |
| Industry | City |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Radio Set | R |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Duval-County, Florida
Head, age 43
Duval-County, Florida · implied b. ~1897 — 5 household members
| Surname | Knight |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Occupation | Fireman |
| Industry | City Fire Dept |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 2340 |
| Highest Grade | Hs 5 |
| 1935 Residence | Same House |
| 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 Joseph Knight across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Joseph Knight
Head · 1940 · age 43 · b. ~1897 · 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
38 people indexed on this census page (nara:1940:m-t0627-00627-00769)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ben Mckoy | 10 | Son | — | Florida |
| 2 | Will B. Harrison | 50 | Head | Laborer | Georgia |
| 3 | Ike Gardner | 50 | Head | Laborer | Georgia |
| 4 | Mandy Gardner | 50 | Wife | — | Georgia |
| 5 | Arkansas Griffin | 26 | Daughter | Maid | Georgia |
| 6 | Cornelius Jenkins | 30 | Head | Chauffeur | Georgia |
| 7 | Marie Jenkins | 30 | Wife | Maid | Georgia |
| 8 | Alvin Davis | 13 | Step son | — | Georgia |
| 9 | Willie Davis | 10 | Step son | — | Georgia |
| 10 | Eula Flowers | 47 | Head | Laundress | Georgia |
| 11 | Alberta Flowers | 16 | Daughter | — | Florida |
| 13 | Joseph Knight THIS PERSON | 43 | Head | Fireman | Florida |
| 14 | Florence Knight | 40 | Wife | — | Massachusetts |
| 15 | Dorothy Knight | 18 | Daughter | — | Florida |
| 16 | Jos. Jr. Knight | 14 | Son | — | Florida |
| 17 | William Knight | 9 | Son | — | Florida |
| 19 | J. S. Russell | 72 | Head | Carpenter Foreman | Virginia |
| 20 | Mary Russell | 72 | Wife | — | New York |
| 21 | Ino M. Russell | 40 | Son | Shipping Clerk | Florida |
| 22 | Nellye M. Russell | 36 | Daughter | Stenographer | New York |
| 23 | J. D. Bowen | 68 | Head | Bridge Tender | Florida |
| 24 | Addie O. Bowen | 64 | Wife | — | Florida |
| 25 | Edna Bowen | 13 | Granddaughter | — | Florida |
| 26 | Thos L. Gahn | 39 | Head | Steamfitter | Georgia |
| 27 | Frances B. Gahn | 31 | Wife | — | Georgia |
| 28 | Jeanine Gahn | 5 | Daughter | — | Georgia |
| 29 | Margaret Gahn | 2 | Daughter | — | Georgia |
| 30 | Richard Gahn | 1 | Son | — | Florida |
| 31 | J. T. Radford | 46 | Head | Superintendent | Georgia |
| 32 | Margaret E. Radford | 46 | Wife | — | Georgia |
| 33 | Betty Radford | 23 | Daughter | Stenographer | Georgia |
| 34 | Jos. W. De Fee | 45 | Head | Mechanic | Florida |
| 35 | Anne Marie De Fee | 38 | Wife | — | Pennsylvania |
| 36 | Anna J. De Fee | 20 | Daughter | — | Florida |
| 37 | Norma De Fee | 17 | Daughter | — | Florida |
| 38 | Joseph J. De Fee | 15 | Son | — | Florida |
| 39 | William W. De Fee | 12 | Son | — | Florida |
| 40 | Veronica De Fee | 10 | Daughter | — | 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)