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William Mcdermott — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · New-York-County, New York

Our Model Tree links this William Mcdermott across the 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 8-person household.

Age 14 b. ~1926 Male Son Born: New York Single

1940 Census Record Details

Census Year1940
LocationNew-York-County, New York
SurnameMcDermott
Given NameWilliam
Relationship to HeadSon
SexM
Color / RaceWhite
Age14
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)New York City
1935 Residence (County)New York
Additional Details
Highest GradeNo 7
1935 ResidenceSame Place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardNew York City
Est. Birth Year~1926

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.

8 people recorded at the same address in the 1940 census.

Name Relation to head Relative to William Age Birth yr
Mary Mcdermott Daughter — 8 ~1932
Rita Mcdermott Daughter — 13 ~1927
Martin Mcdermott Head — 44 ~1896
Anna Mcdermott Spouse — 37 ~1903
Robert Mcdermott Son — 17 ~1923
William Mcdermott Son — 14 ~1926
Martin Mcdermott Son — 15 ~1925
Joseph Mcdermott Son — 10 ~1930

Census Appearances

1930
New York, …
Son, age 4
New York, New York · implied b. ~1926 — 7 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McDermott
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 4
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
1940
New-York-County, New …
Son, age 14
New-York-County, New York · implied b. ~1926 — 8 household members
Surname McDermott
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 14
Marital Status Single
Birthplace New York
1935 Residence (City) New York City
1935 Residence (County) New York
Highest Grade No 7
1935 Residence Same Place
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.
Linked across censuses
Our Model Tree links William Mcdermott across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcdermott
Son · 1940 · age 14 · b. ~1926 · New York
★ You are viewing this record
Sibling
Robert Mcdermott
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcdermott
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcdermott
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Mcdermott
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mcdermott
Sibling · 1940 · age 13
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 — New-York-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02663-00091)

Line Name Age Relation Occupation Birthplace
1 Agapito Macdonalds 39 Head Salesman Puerto Rico
2 Julia Macdonalds 29 Wife — Puerto Rico
3 Edward Macdonalds 9 Son — Puerto Rico
4 Carmen Alvarez 29 Boarder — Puerto Rico
5 Paul Lopez 23 Head — Puerto Rico
6 Lucy Lopez 22 Wife — Puerto Rico
7 Martin Mcdermott 44 Head Laborer New York
8 Anna Mcdermott 37 Wife — New York
9 Robert Mcdermott 17 Son — New York
10 Martin Mcdermott 15 Son — New York
11 William Mcdermott THIS PERSON 14 Son — New York
12 Rita Mcdermott 13 Daughter — New York
13 Joseph Mcdermott 10 Son — New York
14 Mary Mcdermott 8 Daughter — New York
15 Fannie Oberum 43 Head — New York
16 John Rooman 28 Head Elevator R Puerto Rico
17 Zenaida Rooman 25 Wife — Puerto Rico
18 John M. Rooman 1 Son — New York
19 Robert Henriquez 18 Boarder Assistant Puerto Rico
20 Richard Reyes 40 Head — Puerto Rico
21 Iriana Reyes 29 Wife — Puerto Rico
22 Lucy Reyes 16 Daughter — Puerto Rico
23 Mary Reyes 12 Daughter — New York
24 Elizabeth Reyes 9 Daughter — New York
25 Richard Reyes 8 Son — New York
26 Lillian Reyes 4 Daughter — New York
27 Frank Miro 47 Head Assistant Puerto Rico
28 Mary Miro 36 Wife — Puerto Rico
29 Myrna Miro 12 Daughter — New York
30 Socorro Gonzalez 24 Boarder — Puerto Rico
31 Josephine Gonzalez 1 Daughter — New York
32 Carlos Perez 38 Head Chef Puerto Rico
33 Lucy Perez 34 Wife — Puerto Rico
34 Nelia Perez 14 Daughter — Puerto Rico
35 Rosie Perez 3 Daughter — New York
36 Joseph Colome 48 Brother Dishwasher Puerto Rico
37 Carmen Broh 25 Boarder Seamstress Puerto Rico
38 Antolino Vila 52 Head — Puerto Rico
39 Juana Vila 38 Wife — Puerto Rico
40 Aida Vila 10 Daughter — Puerto Rico

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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)

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