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Mary Mcdermott — 1920 US Census Record
Linked across censuses1920 United States Federal Census · New York, New York
Our Model Tree links this Mary Mcdermott across the 1920, 1930 and 1940 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 2-person household.
Age 52
b. ~1868
Female
Head
Born: Ireland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | New York, New York |
| Surname | McDermott |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Housework |
| Industry | Priv. Fam. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Housework |
| Township / Ward | New York City |
| Est. Birth Year | ~1868 |
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.
2 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mcdermott | Daughter | — | 23 | ~1897 |
| Mary Mcdermott | Head | — | 52 | ~1868 |
Census Appearances
1920
New York, …
Head, age 52
New York, New York · implied b. ~1868 — 2 household members
| Surname | McDermott |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Housework |
| Industry | Priv. Fam. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
New York, …
Other, age 62
New York, New York · implied b. ~1868 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Mary E. |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Single |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Queens-County, New …
Other, age 71
Queens-County, New York · implied b. ~1869 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Mary A |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | N.Y. City |
| 1935 Residence (County) | Queens |
| Naturalization Status | Naturalized |
| Highest Grade | No 6 |
| 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 Mcdermott 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 Mcdermott
Head · 1920 · age 52 · b. ~1868 · New York
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — New York, New York
Open full size
1920 US Federal Census — New York, New York
Page Contents
41 people indexed on this census page (ia:1920:14thcensusofpopu1213unit:0135)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Dora Williams | 28 | Servant | Servant | Ireland |
| 52 | Dewey Dillon | 21 | Head | Broker | United St. |
| 53 | Edith Dillon | 25 | Wife | None | United St. |
| 54 | Richard Dillon | 3 | Son | None | United St. |
| 55 | Elizabeth Curry | 40 | Ch. Nurse | Ch. Nurse | England |
| 56 | Fred Peppers | 31 | Butler | Butler | Denmark |
| 57 | Oskara Almgren | 39 | Servant | Servant | Sweden |
| 58 | Sanda Ericson | 19 | Servant | Servant | Sweden |
| 59 | Minnie Thompson | 29 | Laundress | Laundress | Norway |
| 60 | Mary Flynn | 36 | Cook | Cook | Ireland |
| 61 | Margaret Nevats | 29 | Ladies Maid | Ladies Maid | France |
| 62 | Philip Arras | 72 | Head | Shoemaker | Germany |
| 63 | Annie Arras | 66 | Wife | None | Germany |
| 64 | Augusta Arras | 36 | Daughter | None | New York |
| 65 | Evelyn Brown | 10 | Boarder | None | New York |
| 66 | Theodore Brown | 4 | Boarder | None | New York |
| 67 | Jacob Michel | 72 | Lodger | Shoemaker | Switzerland |
| 68 | John Connolly | 52 | Head | Porter | New York |
| 69 | Bella Connolly | 48 | Wife | None | New York |
| 70 | Mary Henderson | 79 | Mother | None | New York |
| 71 | Ada Henderson | 36 | Sister | Examiner | New York |
| 72 | John Fiorenza | 61 | Head | None | Italy |
| 73 | Vincenza Fiorenza | 25 | Son | Clerk | Italy |
| 74 | Anthony Fiorenza | 21 | Son | Teacher | Italy |
| 75 | Martin Barron | 60 | Head | Builder | Nova Scotia |
| 76 | Margaret Barron | 58 | Wife | None | Ireland |
| 77 | Daniel O'Connell | 41 | Head | Chauffeur | Ireland |
| 78 | Mary O'Connell | 38 | Wife | None | Ireland |
| 79 | Helen O'Connell | 8 | Daughter | — | New York |
| 80 | Mary O'Connell | 4 | Daughter | — | New York |
| 81 | Patrick Brawley | 29 | Boarder | Brakeman | Ireland |
| 82 | John P. Friend | 52 | Head | Elevator Man | Ireland |
| 83 | Annie Friend | 52 | Wife | None | Ireland |
| 84 | Michael Donnelly | 71 | Uncle | Broker | Ireland |
| 85 | Frank Dingel | 48 | Head | Carpenter | Ireland |
| 86 | Delia Dingel | 45 | Wife | None | Ireland |
| 87 | Raymond Dingel | 22 | Son | Stenographer | New York |
| 88 | Richard E. Dingel | 13 | Son | — | New York |
| 89 | Marie R. Dingel | 8 | Daughter | — | New York |
| 90 | Mary Mcdermott THIS PERSON | 52 | Head | Housework | Ireland |
| 91 | Margaret Mcdermott | 23 | Daughter | Dressmaker | New York |
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)