MD
Mary Dempsey — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Mary Dempsey across the 1920, 1930 and 1940 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1881), then head of a 7-person household.
Age 39
b. ~1881
Female
Head
Born: Ireland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Philadelphia, Pennsylvania |
| Surname | Dempsey |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1901 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1881 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Dempsey | Daughter | — | 14 | ~1906 |
| James Dempsey | Son | — | 6 | ~1914 |
| John Dempsey | Son | — | 7 | ~1913 |
| Thomas Dempsey | Son | — | 17 | ~1903 |
| Mary Dempsey | Head | — | 39 | ~1881 |
| Margaret Dempsey | Daughter | — | 11 | ~1909 |
| Matthew Dempsey | Son | — | 16 | ~1904 |
Census Appearances
1920
Philadelphia, Pennsylvania
Head, age 39
Philadelphia, Pennsylvania · implied b. ~1881 — 7 household members
| Surname | Dempsey |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1901 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Philadelphia, Pennsylvania
Spouse, age 53
Philadelphia, Pennsylvania · implied b. ~1877 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1903 |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Philadelphia-County, Pennsylvania
Head, age 63
Philadelphia-County, Pennsylvania · implied b. ~1877 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Mary Dempsey across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Dempsey
Head · 1920 · age 39 · b. ~1881 · Pennsylvania
★ You are viewing this record
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:1920:14thcensusofpopu1626unit:0109)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Margaret M. Brennan | 17 | Daughter | — | Penna |
| 52 | John Brennan | 6 | Son | — | Penna |
| 53 | William Brennan | 4 | Son | — | Penna |
| 54 | Francis Brennan | 1 | Son | — | Penna |
| 55 | Harry Weiss | 36 | Head | Master Mech. | Penna |
| 56 | Harry (Jr) Weiss | 10 | Son | — | Penna |
| 57 | Robert W. Weiss | 8 | Son | — | Penna |
| 58 | Edith M. Weiss | 5 | Daughter | — | Penna |
| 59 | Edna M. Weiss | 4 | Daughter | — | Penna |
| 60 | Veronica Weiss | 75 | Mother | — | Hesse |
| 61 | Sam'L J. Gwynne | 46 | Head | Weaver | Penna |
| 62 | Laura L. Gwynne | 41 | Wife | — | Penna |
| 63 | Sam'L J. (Jr) Gwynne | 20 | Son | Machinist | Penna |
| 64 | Laura M. Gwynne | 12 | Daughter | — | Penna |
| 65 | Raymond L. Gwynne | 14 | Son | Errand-Boy | Penna |
| 66 | Edith G. Gwynne | 8 | Daughter | — | Penna |
| 67 | William J. Gwynne | 6 | Son | — | Penna |
| 68 | Francis J. Gwynne | 2 | Son | — | Penna |
| 69 | David U. Heaton | 34 | Head | Bartender | Penna |
| 70 | Mary Heaton | 32 | Wife | Worker | Penna |
| 71 | Helen Heaton | 11 | Daughter | — | Penna |
| 72 | Joseph Heaton | 6 | Son | — | Penna |
| 73 | Chas. Haag | 42 | Lodger | Brick Maker | Penna |
| 74 | William H. Millard | 27 | Head | Manager | Penna |
| 75 | Lydia C. Millard | 21 | Wife | — | Penna |
| 76 | Mary Dempsey THIS PERSON | 39 | Head | — | Ireland |
| 77 | Thomas D. Dempsey | 17 | Son | Heater Boy | Ireland |
| 78 | Matthew J. Dempsey | 16 | Son | Presser | England |
| 79 | Mary T. Dempsey | 14 | Daughter | Examiner | Penna |
| 80 | Margaret M. Dempsey | 11 | Daughter | — | Penna |
| 81 | John M. Dempsey | 7 | Son | — | Penna |
| 82 | James Dempsey | 6 | Son | — | Penna |
| 83 | George W. Frantz | 32 | Head | Upholsterer | Penna |
| 84 | Mabel S. Frantz | 32 | Wife | — | Penna |
| 85 | William H. Frantz | 10 | Son | — | Penna |
| 86 | George W. (Jr) Frantz | 6 | Son | — | Penna |
| 87 | Earl J. Wakeman | 39 | Head | Patterner | New York |
| 88 | Margaret E. Wakeman | 39 | Wife | — | New York |
| 89 | Jeannette E. Wakeman | 17 | Daughter | Folder | New York |
| 90 | James G. Wakeman | 12 | Son | — | New York |
| 91 | Lloyd G. Wakeman | 9 | Son | — | Penna |
| 92 | Elsie Healey | 18 | Boarder | Operator | England |
| 93 | Samuel Kraler | 23 | Head | Foreman | Penna |
| 94 | George F. Halloran | 32 | Boarder | Dyer | New York |
| 95 | William Ashley | 24 | Boarder | Chauffeur | Penna |
| 96 | Robt. G. Macfarland | 32 | Head | Helper | Penna |
| 97 | Helen R. Macfarland | 26 | Wife | — | Penna |
| 98 | Edward Macfarland | 5 | Son | — | Penna |
| 99 | Florence M. Macfarland | 1 | Daughter | — | Penna |
| 100 | Frank C. Cammel | 42 | Head | Cutter | Penna |
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)