HL
Harry Long — 1940 US Census Record
Model Tree available1940 United States Federal Census · Duval-County, Florida
Our Model Tree links this Harry Long across the 1920, 1930 and 1940 US Censuses in Duval-County, Florida (XGBoost, ~Confirmed), with identified parents John & Sam — first a son (b.~1910), then head of a 5-person household.
Age 30
b. ~1910
Male
Son
Born: Florida
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Duval-County, Florida |
| Surname | Long |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Additional Details | |
| Occupation | Assistant Manager |
| Industry | Gasoline Station |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1560 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same house |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Assistant Manager |
| Township / Ward | Jacksonville |
| Est. Birth Year | ~1910 |
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 Harry | Age | Birth yr |
|---|---|---|---|---|
| Northie Long | Daughter | — | 23 | ~1917 |
| John Long | Head | — | 62 | ~1878 |
| Ellen Long | Spouse | — | 53 | ~1887 |
| Willis Long | Son | — | 32 | ~1908 |
| Harry Long | Son | — | 30 | ~1910 |
Census Appearances
1920
Duval, Florida
Son, age 10
Duval, Florida · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Duval, Florida
Son, age 21
Duval, Florida · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Harry, J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Clerk |
| Industry | Electric |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Duval-County, Florida
Son, age 30
Duval-County, Florida · implied b. ~1910 — 5 household members
| Surname | Long |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Occupation | Assistant Manager |
| Industry | Gasoline Station |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1560 |
| Highest Grade | Hs 1 |
| 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 Harry Long across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Long (~0.92 confidence) and father Sam Long (~0.92 confidence) and mother Queen Long (~0.92 confidence) and mother Ellen Long (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Long
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Sam Long
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Queen Long
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Ellen Long
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Long
Son · 1940 · age 30 · b. ~1910 · Florida
★ You are viewing this record
Sibling
Willis Long
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Northie Long
Sibling · 1940 · age 23
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 — 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-t0627-00627-00999)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | A. G. Davis | 62 | Head | Manager | Georgia |
| 42 | Virginia N. Davis | 52 | Wife | Assistant | Virginia |
| 43 | C. H. Leonhardt | 47 | Head | Fireman | New Jersey |
| 44 | Jane Leonhardt | 43 | Wife | — | Virginia |
| 45 | Jane Leonhardt | 10 | Daughter | — | Florida |
| 46 | Cornelia Caldwell | 30 | Lodger | Stenographer | Georgia |
| 47 | Rufus N. Binney | 44 | Head | Captain | South Carolina |
| 48 | Louise Binney | 55 | Wife | — | Florida |
| 49 | Ruby Mae Binney | 33 | Daughter | Secretary | Florida |
| 50 | Catherine H. Binney | 21 | Daughter | — | Florida |
| 51 | G. P. Gunderson | 49 | Head | Bookkeeper | Georgia |
| 52 | Vernon Gunderson | 43 | Wife | — | Tennessee |
| 53 | Porter S. Mosley | 35 | Head | Agent | Florida |
| 54 | Catherine D. Mosley | 33 | Wife | — | Georgia |
| 55 | Porter S. Jr. Mosley | 0 | Son | — | Florida |
| 56 | John B. Long | 62 | Head | Manager | Florida |
| 57 | Ellen Long | 53 | Wife | — | Florida |
| 58 | Willis Long | 32 | Son | Engineer | Georgia |
| 59 | Harry Long THIS PERSON | 30 | Son | Assistant Manager | Florida |
| 60 | Northie Long | 23 | Daughter | Secretary | Florida |
| 61 | Louis C. Du Bard | 38 | Head | Department Manager | Mississippi |
| 62 | Evelyn Du Bard | 34 | Wife | School Teacher | Oklahoma |
| 63 | J. Emmett Harlecker | 35 | Head | Salesman | Missouri |
| 64 | Olive Harlecker | 28 | Wife | Stenographer | Pennsylvania |
| 65 | Laurie J. Shiver | 34 | Head | Bookkeeper | Georgia |
| 66 | Savoia N. Shiver | 26 | Wife | Stenographer | Florida |
| 67 | H. J. Benson | 27 | Head | Manager | Georgia |
| 68 | Mandy J. Benson | 25 | Wife | — | Georgia |
| 69 | H. J. Jr. Benson | 1 | Son | — | Florida |
| 70 | Lillyne Evans | 40 | Head | Librarian | Georgia |
| 71 | Velva Evans | 20 | Daughter | Assistant | Georgia |
| 72 | Rachel Baldwin | 23 | Daughter | — | Georgia |
| 73 | Frederick Baldwin | 27 | Son-in-law | Service Man | Georgia |
| 74 | Charles Mann | 61 | Head | School Carpenter | England |
| 75 | Mary Maude Mann | 61 | Wife | — | England |
| 76 | Mildred Mann | 34 | Daughter | Sales-Lady | Canada |
| 77 | Hilda Mann | 32 | Daughter | Telephone Operator | Canada |
| 78 | Walter R. Sargent | 66 | Head | General Manager | Massachusetts |
| 79 | Susan Sargent | 71 | Wife | — | Vermont |
| 80 | J. H. Setzer | 35 | Head | Department Manager | Dakota |
Pedigree Summary
Harry + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)