WM
William Mcdermott — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this William Mcdermott across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents Bernard & William — first a son (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same town |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1916 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Mcdermott | Son | — | 24 | ~1916 |
| Annie Mcdermott | Head | — | 45 | ~1895 |
| Elizabeth Mcdermott | Daughter | — | 17 | ~1923 |
| Anna Mcdermott | Daughter | — | 22 | ~1918 |
Census Appearances
1920
Kings, New …
Son, age 3
Kings, New York · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Son, age 13
Kings, New York · implied b. ~1917 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Son, age 24
Kings-County, New York · implied b. ~1916 — 4 household members
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same town |
| 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 William Mcdermott across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bernard Mcdermott (~0.92 confidence) and father William Mcdermott (~0.92 confidence) and mother Annie Mcdermott (~0.92 confidence) and mother Catherine Mcdermott (~0.92 confidence) and mother Julia Mcdermott (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bernard Mcdermott
b. ~1888
Source father
● Household
· direct · ~0.92
Father
William Mcdermott
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Annie Mcdermott
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Catherine Mcdermott
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Julia Mcdermott
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mcdermott
Son · 1940 · age 24 · b. ~1916 · New York
★ You are viewing this record
Sibling
Anna Mcdermott
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mcdermott
Sibling · 1940 · age 17
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
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-t0627-02569-00225)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rose Galuzzio | 33 | Wife | Housewife | New York |
| 2 | Concetta Galuzzio | 4 | Daughter | — | New York |
| 3 | Catherine Galuzzio | 2 | Daughter | — | New York |
| 4 | Patrick Kenny | 67 | Head | — | Ireland |
| 5 | Frances Kenny | 65 | Wife | Housewife | Ireland |
| 6 | John D'Ambola | 28 | Head | — | Italy |
| 7 | Mary D'Ambola | 27 | Wife | Housewife | Italy |
| 8 | Anthony Piotto | 29 | Head | Assorter | New York |
| 9 | Vera Piotto | 24 | Wife | Assorter | New York |
| 10 | Concetta Piotto | 4 | Daughter | — | New York |
| 11 | Nancy Piotto | 2 | Daughter | — | New York |
| 12 | Nancy Marcolo | 52 | Head | Assorter | Italy |
| 13 | Marguerite Marcolo | 22 | Daughter | Assorter | New York |
| 14 | Florence Plunkett | 64 | Head | Housewife | New York |
| 15 | Elizabeth Bearen | 66 | Head | Housewife | Colorado |
| 16 | Evelyn Storan | 21 | Daughter | Housewife | Colorado |
| 17 | Adelaide Storan | 3 | Daughter | — | New York |
| 18 | William Storan | 1 | Son | — | New York |
| 19 | Emmet Duffy | 36 | Head | — | New York |
| 20 | Mary Duffy | 31 | Wife | Housewife | Ireland |
| 21 | Robert Duffy | 7 | Son | — | New York |
| 22 | Joan Duffy | 5 | Daughter | — | New York |
| 23 | John Duffy | 2 | Son | — | New York |
| 24 | Annie Mcdermott | 45 | Head | General Cleaning | Ireland |
| 25 | William Mcdermott THIS PERSON | 24 | Son | — | New York |
| 26 | Anna Mcdermott | 22 | Daughter | Helper | New York |
| 27 | Elizabeth Mcdermott | 17 | Daughter | — | New York |
| 28 | Pasquale Battibaglia | 64 | Head | — | Italy |
| 29 | Marie Battibaglia | 64 | Wife | Housewife | Italy |
| 30 | Saverio Battibaglia | 23 | Son | Machine Operator | New York |
| 31 | Rose Battibaglia | 20 | Daughter | Operator | New York |
| 32 | Michael Massieri | 38 | Head | Helper | Italy |
| 33 | Beatrice Massieri | 30 | Wife | Operator | Italy |
| 34 | Louis Signori | 66 | Head | — | Italy |
| 35 | Angelina Signori | 61 | Wife | Housewife | Italy |
| 36 | John Signori | 25 | Son | — | New York |
| 37 | Mary Signori | 16 | Daughter | — | New York |
| 38 | Stella Jaguerin | 48 | Head | — | New York |
| 39 | Stella Jaguerin | 14 | Daughter | Machine Operator | New York |
| 40 | Anna Jaguerin | 12 | Daughter | — | New York |
Pedigree Summary
William + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)