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James Dempsey — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this James Dempsey across the 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1905), then head of a 9-person household.
Age 15
b. ~1905
Male
Son
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Philadelphia, Pennsylvania |
| Surname | Dempsey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1905 |
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.
9 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Francis Dempsey | Son | — | 9 | ~1911 |
| James Dempsey | Son | — | 15 | ~1905 |
| Thomas Dempsey | Son | — | 12 | ~1908 |
| Margaret Dempsey | Spouse | — | 40 | ~1880 |
| Catharine Dempsey | Daughter | — | 21 | ~1899 |
| John Travers | Other | — | 48 | ~1872 |
| John Dempsey | Head | — | 42 | ~1878 |
| Edward Dempsey | Son | — | 3 | ~1917 |
| Bridget Gallagher | Other | — | 55 | ~1865 |
Census Appearances
1910
Philadelphia, Pennsylvania
Son, age 5
Philadelphia, Pennsylvania · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | James J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Son, age 15
Philadelphia, Pennsylvania · implied b. ~1905 — 9 household members
| Surname | Dempsey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 2 US Census years (1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
James Dempsey
Son · 1920 · age 15 · b. ~1905 · Pennsylvania
★ You are viewing this record
Sibling
Edward Dempsey
Sibling · 1920 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Dempsey
Sibling · 1920 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Dempsey
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catharine Dempsey
Sibling · 1920 · age 21
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
1920 US Federal Census — Philadelphia, Pennsylvania
Open full size
1920 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1627unit:0293)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Anna K Hammer | 15 | Daughter | — | Pennsylvania |
| 52 | Marion E Hammer | 13 | Daughter | — | Pennsylvania |
| 53 | Nicolas Szczepaniak | 46 | Head | Locksmith | Poland |
| 54 | Katie Szczepaniak | 43 | Wife | — | Austrian Poland |
| 55 | Joseph Szczepaniak | 18 | Son | Machinist | Austrian Poland |
| 56 | Mary Szczepaniak | 12 | Daughter | — | Pennsylvania |
| 57 | Stanley Kedzior | 38 | Boarder | Machinist | Austrian Poland |
| 58 | Joseph Durbowski | 32 | Boarder | Locksmith | Russian Poland |
| 59 | John Dempsey | 42 | Head | Janitor | Pennsylvania |
| 60 | Margaret Dempsey | 40 | Wife | — | Ireland |
| 61 | Catharine Dempsey | 21 | Daughter | Operator | Pennsylvania |
| 62 | James Dempsey THIS PERSON | 15 | Son | — | Pennsylvania |
| 63 | Thomas Dempsey | 12 | Son | — | Pennsylvania |
| 64 | Francis Dempsey | 9 | Son | — | Pennsylvania |
| 65 | Edward Dempsey | 3 | Son | — | Pennsylvania |
| 66 | John Travers | 48 | Brother-in-law | Laborer | Ireland |
| 67 | Bridget Gallagher | 55 | Sister-in-law | — | Ireland |
| 68 | James G Jones | 54 | Head | Engineer | Ireland |
| 69 | Catherine Jones | 53 | Wife | — | Ireland |
| 70 | Daniel J Jones | 23 | Son | Messenger | Pennsylvania |
| 71 | Mary E Jones | 21 | Daughter | Operator | Pennsylvania |
| 72 | Catharine A Jones | 19 | Daughter | Operator | Pennsylvania |
| 73 | Sarah M Jones | 16 | Daughter | Operator | Pennsylvania |
| 74 | Rose M Jones | 12 | Daughter | — | Pennsylvania |
| 75 | William B List | 26 | Head | Brakeman | Pennsylvania |
| 76 | Mary E List | 21 | Wife | — | Pennsylvania |
| 77 | Mary List | 4 | Daughter | — | Pennsylvania |
| 78 | William List | 2 | Son | — | Pennsylvania |
| 79 | Sadie Sammon | 23 | Sister-in-law | Mill Worker | Pennsylvania |
| 80 | Helen Sammon | 16 | Sister-in-law | Mill Worker | Pennsylvania |
| 81 | Patrick Sullivan | 53 | Head | Laborer | Pennsylvania |
| 82 | Mary Sullivan | 53 | Wife | — | Ireland |
| 83 | Ursula Sullivan | 18 | Daughter | Clerk | Pennsylvania |
| 84 | Mary Sullivan | 17 | Daughter | Sales Girl | Pennsylvania |
| 85 | Eunice Sullivan | 16 | Daughter | — | Pennsylvania |
| 86 | Joseph Sullivan | 13 | Son | — | Pennsylvania |
| 87 | Richard P Sullivan | 11 | Son | — | Pennsylvania |
| 88 | Joseph A O'Brien | 44 | Head | Iron Fitter | Pennsylvania |
| 89 | Margaret O'Brien | 40 | Wife | — | Pennsylvania |
| 90 | Joseph O'Brien | 20 | Son | — | Pennsylvania |
| 91 | John O'Brien | 15 | Son | — | Pennsylvania |
| 92 | John J Langford | 45 | Head | Core Maker | Pennsylvania |
| 93 | Julia Langford | 43 | Wife | — | Pennsylvania |
| 94 | John Langford | 8 | Son | — | Pennsylvania |
| 95 | Patrick F Langford | 45 | Brother | Machinist | Pennsylvania |
| 96 | Paul W Grieselman | 47 | Head | Candler | Pennsylvania |
| 97 | Julia Grieselman | 41 | Wife | — | Germany |
| 98 | Paul W Grieselman | 18 | Son | Clerk | Pennsylvania |
| 99 | Daniel J Mcdevitt | 38 | Head | Fireman | Pennsylvania |
| 100 | Mary Mcdevitt | 37 | Wife | — | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)