JH
James Harmon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Maryland
Our Model Tree links this James Harmon across the 1930 and 1940 US Censuses in Washington-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Maryland |
| Surname | Harmon |
| Given Name | James A. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Hagerstown |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | laborer |
| Industry | pretzel factory |
| Class of Worker | PW |
| Hours Worked | 48 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Hagerstown |
| Est. Birth Year | ~1917 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Robert Harmon | Son | — | 31 | ~1909 |
| Garfield Harmon | Head | — | 57 | ~1883 |
| Carrie Harmon | Spouse | — | 62 | ~1878 |
| Frances Harmon | Daughter | — | 20 | ~1920 |
| Helen Harmon | Daughter | — | 32 | ~1908 |
| James Harmon | Son | — | 23 | ~1917 |
Census Appearances
1930
Washington, Maryland
Son, age 13
Washington, Maryland · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harman |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Washington-County, Maryland
Son, age 23
Washington-County, Maryland · implied b. ~1917 — 6 household members
| Surname | Harmon |
| Given Name | James A. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Hagerstown |
| 1935 Residence (County) | Washington |
| Occupation | laborer |
| Industry | pretzel factory |
| Class of Worker | PW |
| Hours Worked | 48 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 James Harmon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Harmon
Son · 1940 · age 23 · b. ~1917 · Maryland
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Sibling
Helen Harmon
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Harmon
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Harmon
Sibling · 1940 · age 31
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 — Washington-County, Maryland
Open full size
1940 US Federal Census — Washington-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01561-00746)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Duleia Gray | 64 | wife | Domestic | Maryland |
| 2 | Rhoda Gray | 37 | daughter | Clerk | Maryland |
| 3 | Margaret Gray | 24 | daughter | Clerk | Maryland |
| 4 | Bessie M. Riggleman | 61 | head | Lodging House Keeper | Pennsylvania |
| 5 | Ruth M. Henderson | 39 | daughter | Recreation Work | Pennsylvania |
| 6 | Betty J. Henderson | 16 | granddaughter | — | Pennsylvania |
| 7 | Kenneth Callander | 31 | lodger | Teacher | Pennsylvania |
| 8 | Walter R. Whitney | 34 | lodger | Chauffeur (Truck) | Maine |
| 9 | Vera Cushwa | 23 | lodger | Clerk | Maryland |
| 10 | William C. Reggins | 40 | lodger | Operator | Maryland |
| 11 | Paul H. Ditch | 35 | lodger | Woodworker | Pennsylvania |
| 12 | George Harne | 55 | head | Contractor | Maryland |
| 13 | Rebecca Harne | 22 | daughter | Production Dept. | Maryland |
| 14 | Warren Harne | 19 | son | Clerk | Maryland |
| 15 | Jean Harne | 17 | daughter | — | Maryland |
| 16 | Jack Harne | 14 | son | — | Maryland |
| 17 | Barbara Harne | 10 | daughter | — | Maryland |
| 18 | Leo Pope | 30 | son-in-law | Garage | Maryland |
| 19 | Catherine Pope | 30 | daughter | Stenographer | Maryland |
| 20 | Garfield Harmon | 57 | head | Proprietor | Maryland |
| 21 | Carrie Harmon | 62 | wife | Laborer | Maryland |
| 22 | Helen J. Harmon | 32 | daughter | Stenographer | Maryland |
| 23 | James A. Harmon THIS PERSON | 23 | son | Laborer | Maryland |
| 24 | Frances Harmon | 20 | daughter | — | Maryland |
| 25 | Robert Harmon | 31 | son | Laborer | Maryland |
| 26 | Guy Pendleman | 38 | head | Enlarging Pictures | Virginia |
| 27 | Ada Pendleman | 33 | wife | Enlarging Pictures | Maryland |
| 28 | Guy Pendleman | 10 | son | — | Maryland |
| 29 | Patty Pendleman | 9 | daughter | — | Maryland |
| 30 | Jack Pendleman | 7 | son | — | Maryland |
| 31 | Molly Summers | 68 | mother-in-law | — | Maryland |
| 32 | H. Clyde Lippy | 26 | head | Timekeeper | Maryland |
| 33 | Carol Lippy | 22 | wife | — | Maryland |
| 34 | Wayne C. Lippy | 1 | son | — | Maryland |
| 35 | William C. Nehring | 58 | head | Clerk | Maryland |
| 36 | Mary J. Nehring | 62 | wife | — | Maryland |
| 37 | Paul A. Payne | 48 | head | Commercial Dept. | Maryland |
| 38 | Margaret Stevenson | 40 | sister | — | Maryland |
| 39 | Sharretts Payne | 46 | brother | — | Maryland |
| 40 | Frank Stevenson | 8 | nephew | — | District of Columbia |
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)