MD
Mary Dempsey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Mary Dempsey across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 4-person household.
Age 42
b. ~1898
Female
Spouse
Born: Connecticut
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Dempsey |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Connecticut |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same home |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
| Township / Ward | New York City |
| Est. Birth Year | ~1898 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Guy Dempsey | Son | — | 20 | ~1920 |
| Joseph Dempsey | Head | — | 53 | ~1887 |
| Mary Dempsey | Spouse | — | 42 | ~1898 |
| Joseph Dempsey | Son | — | 22 | ~1918 |
Census Appearances
1920
Kings, New …
Spouse, age 27
Kings, New York · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | May E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Connecticut |
| Father's Birthplace | New York |
| Mother's Birthplace | Canada |
| Occupation | Housewife |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1930
Kings, New …
Other, age 33
Kings, New York · implied b. ~1897 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | Mary G. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Connecticut |
| Age at First Marriage | 18 |
| Father's Birthplace | New York |
| Mother's Birthplace | Canada |
| Can Read/Write | Yes |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1940
Kings-County, New …
Spouse, age 42
Kings-County, New York · implied b. ~1898 — 4 household members
| Surname | Dempsey |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Connecticut |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Highest Grade | Hs 4 |
| 1935 Residence | Same home |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
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
Spouse · 1940 · age 42 · b. ~1898 · New York
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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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02547-00178)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Julia Bashal | 38 | Wife | Secretary | Illinois |
| 42 | John P. Watts | 56 | Head | Accountant | New York |
| 43 | Alice Watts | 54 | Wife | — | Kentucky |
| 44 | Thomas Watts | 23 | Son | — | Missouri |
| 45 | Philip J. Gucker | 36 | Head | Teacher | New York |
| 46 | Helen Gucker | 29 | Wife | Secretary | Nova Scotia |
| 47 | John Gucker | 10 | Son | — | New York |
| 48 | Edith C. Ezine | 55 | Head | Probation Officer | New York |
| 49 | Dorothy C. Ezine | 25 | Daughter | Travel Bureau | New York |
| 50 | Margaret Howell | 60 | Head | Teacher | New York |
| 51 | Homer G. Hander | 45 | Head | Teacher | Iowa |
| 52 | Jessy M. Griggs | 58 | Head | — | New York |
| 53 | Annette G. Griggs | 55 | Sister | — | New York |
| 54 | Bernard Avenith | 38 | Head | Printer | Indiana |
| 55 | Dorothy Avenith | 31 | Wife | — | Massachusetts |
| 56 | Edward Ii Avenith | 5 | Son | — | New York |
| 57 | William Avenith | 3 | Son | — | New York |
| 58 | Leon Liebowitz | 49 | Head | Upholsterer | Roumania |
| 59 | Sophie Liebowitz | 46 | Wife | — | Roumania |
| 60 | David Shern | 26 | Son-in-law | Salesman | New York |
| 61 | Diane Shern | 25 | Daughter | — | Roumania |
| 62 | Peter Joiner | 47 | Head | Handyman | New York |
| 63 | Mae Joiner | 41 | Wife | Superintendent | New York |
| 64 | Susan Dobrauski | 65 | Mother-in-law | — | Austria |
| 65 | Albert C. Heesemann | 29 | Head | Purchasing Agent | New York |
| 66 | Lucille Heesemann | 27 | Wife | Financial Writing | New York |
| 67 | Alphonso Sorgent | 60 | Head | Packer | Massachusetts |
| 68 | Margaret Sorgent | 59 | Wife | — | Scotland |
| 69 | Elizabeth Dempsey | 58 | Head | Secretary | Massachusetts |
| 70 | Marjorie Coe | 38 | Head | Secretary | New York |
| 71 | Ettia Mcconville | 38 | Boarder | Stenographer | Connecticut |
| 72 | Charles Henze | 33 | Head | Medical Research | Italy |
| 73 | Gertrude Smith | 56 | Head | Associate Editor | Ohio |
| 74 | Samuel Bailey | 41 | Head | Physician | Tennessee |
| 75 | Annie May Bailey | 31 | Wife | — | Tennessee |
| 76 | Ann Bailey | 5 | Daughter | — | New York |
| 77 | Joseph F. Dempsey | 53 | Head | Lawyer | New York |
| 78 | Mary E. Dempsey THIS PERSON | 42 | Wife | — | Connecticut |
| 79 | Joseph Jr. Dempsey | 22 | Son | — | New York |
| 80 | Guy E. Dempsey | 20 | Son | — | New York |
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)