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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 1910 and 1920 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 11-person household.
Age 10
b. ~1910
Female
Daughter
Born: New York
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | New York, New York |
| Surname | McDermott |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1910 |
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.
11 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcdermott | Daughter | — | 10 | ~1910 |
| Margaret Mcdermott | Daughter | — | 16 | ~1904 |
| Eileen Mcdermott | Daughter | — | 2 | ~1918 |
| Alice Mcdermott | Daughter | — | 1 | ~1919 |
| Denis Mcdermott | Head | — | 50 | ~1870 |
| Edward Mcdermott | Son | — | 6 | ~1914 |
| James Mcdermott | Son | — | 12 | ~1908 |
| Denis Mcdermott | Son | — | 4 | ~1916 |
| John Mcdermott | Son | — | 8 | ~1912 |
| Richard Mcdermott | Son | — | 14 | ~1906 |
| Sarah Mcdermott | Spouse | — | 38 | ~1882 |
Census Appearances
1910
New York, …
Daughter, age 1
New York, New York · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1920
New York, …
Daughter, age 10
New York, New York · implied b. ~1910 — 11 household members
| Surname | McDermott |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 2 US Census years (1910 and 1920) in New York, New York, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcdermott
Daughter · 1920 · age 10 · b. ~1910 · New York
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Sibling
Denis Mcdermott
Sibling · 1920 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Mcdermott
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Mcdermott
Sibling · 1920 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcdermott
Sibling · 1920 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcdermott
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mcdermott
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mcdermott
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Mcdermott
Sibling · 1920 · age 2
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 — New York, New York
Open full size
1920 US Federal Census — New York, New York
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1197unit:0550)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur Strom | 62 | Head | Mechanic | Sweden |
| 2 | Ida Strom | 55 | Wife | — | Sweden |
| 3 | Edith Kitown | 29 | Head | Steno | New York |
| 4 | Edna Kitown | 24 | Boarder | Clerk | New York |
| 5 | James Mcguire | 40 | Head | Motorman | Ireland |
| 6 | Annie Mcguire | 40 | Wife | — | Ireland |
| 7 | James Mcguire | 15 | Son | Bookkeeper | New York |
| 8 | James Donohue | 24 | Nephew | Steno Grapher | New York |
| 9 | Patrick Brady | 50 | Boarder | Laborer | Ireland |
| 10 | Charles Cunningham | 41 | Head | Switchman | New York |
| 11 | Margaret Cunningham | 34 | Wife | — | Ireland |
| 12 | Catherine Deheim | 39 | Sister in law | Bookkeeper | Ireland |
| 13 | George Dietz | 64 | Head | Stable | New York |
| 14 | Alice Dietz | 63 | Wife | — | New York |
| 15 | Mary Hogan | 50 | Head | Maid | New York |
| 16 | Delia O'Rourke | 43 | Sister | Dressmaker | New York |
| 17 | Nellie Caulfield | 39 | Boarder | Telephone | New York |
| 18 | Anna Nelson | 45 | Boarder | Telephone | New York |
| 19 | August Brosi | 32 | Head | Chauffeur | Italy |
| 20 | Anna Brosi | 26 | Wife | Cashier | Hungary |
| 21 | James Clancy | 48 | Head | Waiter | Ireland |
| 22 | Mary Clancy | 44 | Wife | — | Ireland |
| 23 | James Clancy | 18 | Son | Machinist | New York |
| 24 | Alice Clancy | 11 | Daughter | — | New York |
| 25 | John Marshall | 37 | Head | Mechanic | New York |
| 26 | Mary Marshall | 40 | Wife | — | New York |
| 27 | James Marshall | 4 | Son | — | New York |
| 28 | Charles Marshall | 2 | Son | — | New York |
| 29 | Annie Cantwell | 52 | Head | — | Ireland |
| 30 | John Cantwell | 27 | Son | Bookkeeper | New York |
| 31 | Catherine Cantwell | 24 | Daughter | Operator | New York |
| 32 | Sarah Cantwell | 22 | Daughter | Secty | New York |
| 33 | William Cantwell | 21 | Son | — | New York |
| 34 | Morris Petrosino | 39 | Head | Stableman | Italy |
| 35 | Rose Petrosino | 30 | Wife | — | Austria |
| 36 | Gong Sam | 47 | Head | Laundry | China |
| 37 | Harry Lee | 41 | Head | Laundry | China |
| 38 | Sam Fung | 53 | Head | Laundry | China |
| 39 | Catherine Mcdermott | 50 | Head | Laborer | Ireland |
| 40 | Denis Mcdermott | 50 | Head | Chauffeur | Ireland |
| 41 | Sarah Mcdermott | 38 | Wife | — | Ireland |
| 42 | Margaret Mcdermott | 16 | Daughter | — | New York |
| 43 | Richard Mcdermott | 14 | Son | — | New York |
| 44 | James Mcdermott | 12 | Son | — | New York |
| 45 | Mary Mcdermott THIS PERSON | 10 | Daughter | — | New York |
| 46 | John Mcdermott | 8 | Son | — | New York |
| 47 | Edward Mcdermott | 6 | Son | — | New York |
| 48 | Denis Mcdermott | 4 | Son | — | New York |
| 49 | Eileen Mcdermott | 2 | Daughter | — | New York |
| 50 | Alice Mcdermott | 1 | Daughter | — | 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)