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William Harmon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Duval-County, Florida
Our Model Tree links this William Harmon across the 1930 and 1940 US Censuses in Duval-County, Florida (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 7-person household.
Age 17
b. ~1923
Male
Son
Born: North Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Duval-County, Florida |
| Surname | Harmon |
| Given Name | William M. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | North Carolina |
| 1935 Residence (County) | Duval |
| Additional Details | |
| Highest Grade | H 10 |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
| Township / Ward | Election Prec 20A |
| Est. Birth Year | ~1923 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Harmon | Son | — | 17 | ~1923 |
| Elwood Harmon | Son | — | 14 | ~1926 |
| Luna Harmon | Spouse | — | 40 | ~1900 |
| David Harmon | Son | — | 10 | ~1930 |
| William Harmon | Head | — | 45 | ~1895 |
| Frances Harmon | Daughter | — | 16 | ~1924 |
| Reid Harmon | Son | — | 12 | ~1928 |
Census Appearances
1930
Duval, Florida
Son, age 7
Duval, Florida · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | North Carolina |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1940
Duval-County, Florida
Son, age 17
Duval-County, Florida · implied b. ~1923 — 7 household members
| Surname | Harmon |
| Given Name | William M. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | North Carolina |
| 1935 Residence (County) | Duval |
| Highest Grade | H 10 |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
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 William Harmon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Harmon
Son · 1940 · age 17 · b. ~1923 · Florida
★ You are viewing this record
Sibling
Frances Harmon
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Reid Harmon
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Harmon
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elwood Harmon
Sibling · 1940 · age 14
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-t0627-00584-00042)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald Edwards | 3 | Son | — | Florida |
| 2 | Altrope D. Beau | 34 | Wife | Laborer | Florida |
| 3 | George D. Mccabe | 42 | Head | Locomotive Engineer | Florida |
| 4 | Nettie D. Mccabe | 37 | Wife | — | Florida |
| 5 | George D. Jr. Mccabe | 17 | Son | — | Florida |
| 6 | John N. Mccabe | 14 | Son | — | Florida |
| 7 | William H. Jones | 35 | Head | Salesman | Florida |
| 8 | Mrs. William H. Jones | 34 | Wife | — | Florida |
| 9 | William H. Jr. Jones | 13 | Son | — | Florida |
| 10 | Muriel Jones | 11 | Daughter | — | Georgia |
| 11 | Robert R. Jones | 6 | Son | — | Florida |
| 12 | Frank L. Rodgers | 25 | Head | Salesman | Florida |
| 13 | Mrs. Frank L. Rodgers | 19 | Wife | — | Florida |
| 14 | Frank L. Jr. Rodgers | 2 | Son | — | Florida |
| 15 | Maggie Cox | 30 | Lodger | — | Georgia |
| 16 | Cox | 43 | Lodger | 40 | Georgia |
| 17 | Robert L. Taylor | 36 | Head | Foreman | Georgia |
| 18 | Rosa Taylor | 35 | Wife | — | Georgia |
| 19 | Mildred L. Taylor | 17 | Daughter | — | Georgia |
| 20 | Robert G. Jr. Taylor | 14 | Son | — | Florida |
| 21 | Virginia J. Taylor | 12 | Daughter | — | Florida |
| 22 | Franklin A. Taylor | 51 | Father-in-law | Bottle Packer | Georgia |
| 23 | William M. Harmon | 45 | Head | Garage Man | North Carolina |
| 24 | Luna Harmon | 40 | Wife | — | North Carolina |
| 25 | William M. Jr. Harmon THIS PERSON | 17 | Son | — | North Carolina |
| 26 | Frances C. Harmon | 16 | Daughter | — | North Carolina |
| 27 | Elwood L. Harmon | 14 | Son | — | North Carolina |
| 28 | Reid M. Harmon | 12 | Son | — | North Carolina |
| 29 | David G. Harmon | 10 | Son | — | North Carolina |
| 30 | Jesse D. Poore | 44 | Head | 48 | Georgia |
| 31 | Mamie Poore | 47 | Wife | — | Georgia |
| 32 | Claude R. Hughes | 35 | Head | Machinist | Florida |
| 33 | Ruby Hughes | 26 | Wife | — | Georgia |
| 34 | Charles Lloyd | 65 | Head | Proprietor | Illinois |
| 35 | Birdie Lloyd | 65 | Wife | — | Ohio |
| 36 | Effie Alderman | 50 | Head | — | Florida |
| 37 | Stella Crawford | 32 | Daughter | Checker | Florida |
| 38 | Ernest Duncan | 25 | Son | Machine Operator | Florida |
| 39 | Lena K. Crawford | 4 | Daughter | — | Florida |
| 40 | Frank C. Murray | 42 | Head | Bar Tender | Florida |
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)