JD
James Dempsey — 1940 US Census Record
Model Tree available1940 United States Federal Census · Columbia-County, Pennsylvania
Our Model Tree links this James Dempsey across the 1920, 1930 and 1940 US Censuses in Columbia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Columbia-County, Pennsylvania |
| Surname | Dempsey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Centralia |
| 1935 Residence (County) | Columbia |
| Additional Details | |
| Occupation | Clerk |
| Industry | Retail Butcher Shop |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 520 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Centralia |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Dorothy Dempsey | Daughter | — | 13 | ~1927 |
| Alma Dempsey | Daughter | — | 11 | ~1929 |
| John Dempsey | Son | — | 17 | ~1923 |
| Alma Dempsey | Spouse | — | 45 | ~1895 |
| James Dempsey | Head | — | 51 | ~1889 |
| James Dempsey | Son | — | 22 | ~1918 |
Census Appearances
1920
Columbia, Pennsylvania
Son, age 2
Columbia, Pennsylvania · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Columbia, Pennsylvania
Son, age 12
Columbia, Pennsylvania · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | James Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Columbia-County, Pennsylvania
Son, age 22
Columbia-County, Pennsylvania · implied b. ~1918 — 6 household members
| Surname | Dempsey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Centralia |
| 1935 Residence (County) | Columbia |
| Occupation | Clerk |
| Industry | Retail Butcher Shop |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 520 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Dempsey across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Dempsey (~0.92 confidence) and father James Dempsey (~0.92 confidence) and father James Dempsey (~0.92 confidence) and mother Alma Dempsey (~0.92 confidence) and mother Catherine Dempsey (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Dempsey
b. ~1890
Source father
● Household
· direct · ~0.92
Father
James Dempsey
b. ~1889
Source father
● Household
· direct · ~0.92
Father
James Dempsey
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Alma Dempsey
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Catherine Dempsey
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Dempsey
Son · 1940 · age 22 · b. ~1918 · Pennsylvania
★ You are viewing this record
Sibling
Dorothy Dempsey
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Dempsey
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alma Dempsey
Sibling · 1940 · age 11
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 — Columbia-County, Pennsylvania
Open full size
1940 US Federal Census — Columbia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03474-00114)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gavin Dyson | 59 | Head | Labor | Pennsylvania |
| 2 | Emma (X) Dyson | 44 | Wife | — | Pennsylvania |
| 3 | Emma Dyson | 21 | Daughter | New Worker | Pennsylvania |
| 4 | Robert Dyson | 19 | Son | Labor | Pennsylvania |
| 5 | Grace Dyson | 16 | Daughter | — | Pennsylvania |
| 6 | Sarah J. Ketterman | 75 | Head | — | Pennsylvania |
| 7 | Dewey Stewart | 41 | Head | Miner | Indiana |
| 8 | Alice Stewart | 42 | Wife | — | Illinois |
| 9 | Margaret Mcglenn | 50 | Head | — | Pennsylvania |
| 10 | Catherine Mcglenn | 23 | Daughter | Teacher | Pennsylvania |
| 11 | James Dempsey | 51 | Head | Trucker | Pennsylvania |
| 12 | Alma (X) Dempsey | 45 | Wife | — | Pennsylvania |
| 13 | James Dempsey THIS PERSON | 22 | Son | Clerk | Pennsylvania |
| 14 | John Dempsey | 17 | Son | — | Pennsylvania |
| 15 | Dorothy Dempsey | 13 | Daughter | — | Pennsylvania |
| 16 | Alma Dempsey | 11 | Daughter | — | Pennsylvania |
| 17 | John Gallagher | 24 | Head | Miner | Pennsylvania |
| 18 | Stella Gallagher | 20 | Wife | — | Pennsylvania |
| 19 | Anna Gallagher | 1 | Daughter | — | Pennsylvania |
| 20 | James J. Low | 69 | Head | Conductor | Pennsylvania |
| 21 | Frances Low | 50 | Brother | Head Of Circulation | Pennsylvania |
| 22 | Michael (X) Mcdonnell | 70 | Head | Miner | Pennsylvania |
| 23 | Sarah (X) Mcdonnell | 62 | Wife | — | Pennsylvania |
| 24 | Sadie Mcdonnell | 41 | Daughter | English Teacher | Pennsylvania |
| 25 | Anna Mcdonnell | 35 | Daughter | Nurse | Pennsylvania |
| 26 | Jerome Mcdonnell | 28 | Son | Physical Director | Pennsylvania |
| 27 | Harry Borys | 59 | Head | Proprietor | Poland |
| 28 | Sophie Borys | 55 | Wife | — | Poland |
| 29 | John Borys | 20 | Son | Accountant | Pennsylvania |
| 30 | Harry Darrowy | 45 | Head | Miner | Russia |
| 31 | Anna Darrowy | 32 | Wife | — | Poland |
| 32 | John (X) Darrowy | 13 | Son | — | Pennsylvania |
| 33 | John Kroshnock | 62 | Boarder | Labor | Poland |
| 34 | Simona Kezetcko | 57 | Boarder | Miner | Austria |
| 35 | Joseph Romer | 46 | Boarder | Miner | Portugal |
| 36 | Vincent Russell | 41 | Head | Janitor | Pennsylvania |
| 37 | Martha X Russell | 34 | Wife | — | Pennsylvania |
| 38 | Mary Russell | 14 | Daughter | — | Pennsylvania |
| 39 | Regina Russell | 9 | Daughter | — | Pennsylvania |
| 40 | Dorothy Russell | 4 | Daughter | — | Pennsylvania |
Pedigree Summary
James + 3 siblings
Gen 1 · 5 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)