JH
John Harmon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sussex-County, Delaware
Our Model Tree links this John Harmon across the 1920, 1930 and 1940 US Censuses in Sussex-County, Delaware (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 4-person household.
Age 51
b. ~1889
Male
Head
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sussex-County, Delaware |
| Surname | Harmon |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | M |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Lewes Dist. |
| 1935 Residence (County) | Sussex |
| Additional Details | |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Farmer |
| Township / Ward | Lewes Dist |
| Est. Birth Year | ~1889 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Loretta Harmon | Daughter | — | 21 | ~1919 |
| John Harmon | Head | — | 51 | ~1889 |
| Clarence Hawkins | Other | — | 13 | ~1927 |
| Martha Harmon | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Sussex, Delaware
Head, age 38
Sussex, Delaware · implied b. ~1882 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
Sussex, Delaware
Head, age 44
Sussex, Delaware · implied b. ~1886 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Delaware |
| Age at First Marriage | 21 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Maryland |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
Sussex-County, Delaware
Head, age 51
Sussex-County, Delaware · implied b. ~1889 — 4 household members
| Surname | Harmon |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | M |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Lewes Dist. |
| 1935 Residence (County) | Sussex |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Harmon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Harmon
Head · 1940 · age 51 · b. ~1889 · Delaware
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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 — Sussex-County, Delaware
Open full size
1940 US Federal Census — Sussex-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00548-00720)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sarah Harmon | 53 | Head | — | Delaware |
| 42 | Walter Harmon | 23 | Son | Gardener | Pennsylvania |
| 43 | Beulah Harmon | 17 | Daughter | — | Delaware |
| 44 | Louis Mellon | 45 | Head | Farmer | Delaware |
| 45 | Shelton Mellon | 20 | Son | Laborer | Delaware |
| 46 | Harry M. Wilson | 43 | Head | Laborer | Delaware |
| 47 | Nora H. Wilson | 45 | Wife | — | Delaware |
| 48 | Willie E. Wilson | 17 | Son | Attendant | Delaware |
| 49 | Thos. J. Harmon | 88 | Father-in-law | — | Delaware |
| 50 | Clarence S. Joseph | 55 | Head | Foreman | Delaware |
| 51 | Hattie Joseph | 55 | Wife | — | Delaware |
| 52 | Chas Joseph | 18 | Son | — | Delaware |
| 53 | Wm. J. Bates | 57 | Head | Retired From Navy | Pennsylvania |
| 54 | Florence Bates | 50 | Wife | — | Pennsylvania |
| 55 | Wm. J. Bates | 18 | Son | — | Pennsylvania |
| 56 | John D. Boyd | 56 | Head | — | Pennsylvania |
| 57 | Clara S. Boyd | 51 | Wife | — | Delaware |
| 58 | Edward C. Phillips | 53 | Head | Farmer | Delaware |
| 59 | Florence M. Phillips | 49 | Wife | — | Delaware |
| 60 | C. Janet Phillips | 21 | Daughter | — | Delaware |
| 61 | John W. Harmon THIS PERSON | 51 | Head | Farmer | Delaware |
| 62 | Martha Harmon | 49 | Wife | — | Alabama |
| 63 | Loretta Harmon | 21 | Daughter | Waitress | Pennsylvania |
| 64 | Clarence Hawkins | 13 | Foster son | — | Virginia |
| 65 | Benjamin Burton | 45 | Head | Laborer | Delaware |
| 66 | Rachel Burton | 42 | Wife | Housework | Delaware |
| 67 | Lucius Waples | 28 | Head | Hauling Ice | Delaware |
| 68 | Mary Waples | 26 | Wife | — | Delaware |
| 69 | Levetene D. Waples | 4 | Son | — | Delaware |
| 70 | Fulton Wm. Waples | 2 | Daughter | — | Delaware |
| 71 | Herman Martin | 38 | Head | Laborer | Maryland |
| 72 | Dorothy Martin | 26 | Wife | — | Delaware |
| 73 | Oscar Arteson | 42 | Head | Farmer | Delaware |
| 74 | Viola Arteson | 43 | Wife | Housework | Delaware |
| 75 | Mary Arteson | 24 | Daughter | Housework | Delaware |
| 76 | Hayward Arteson | 22 | Son | Laborer | Delaware |
| 77 | Henry Arteson | 20 | Son | Housework | Delaware |
| 78 | Nellie Arteson | 16 | Daughter | — | Delaware |
| 79 | Chas Arteson | 13 | Son | — | Delaware |
| 80 | Oscar Arteson | 10 | Son | — | Delaware |
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)