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Margaret Mcdermott — 1940 US Census Record

Model Tree available

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

Our Model Tree links this Margaret Mcdermott across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1902), then head of a 6-person household.

Age 38 b. ~1902 Female Daughter Born: New York Single

1940 Census Record Details

Census Year1940
LocationKings-County, New York
SurnameMcDermott
Given NameMargaret
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age38
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)New York City Brooklyn Boro
1935 Residence (County)Kings
Additional Details
OccupationClerk
IndustryFred. Loeser
Class of WorkerPW
Income (1939)900
Highest GradeNo 8
1935 ResidenceSame place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
OccupationClerk
Township / WardNew York City Brooklyn Boro
Est. Birth Year~1902

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.

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

Name Relation to head Relative to Margaret Age Birth yr
Lillian Mahan Other — 75 ~1865
John Mcdermott Head — 65 ~1875
Margaret Mcdermott Daughter — 38 ~1902
Lillian Price Daughter — 38 ~1902
Mary Mcdermott Spouse — 67 ~1873
Dorothy Mcdermott Other — 16 ~1924

Census Appearances

1920
Kings, New …
Daughter, age 18
Kings, New York · implied b. ~1902 — 10 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McDermott
Given Name Margaret
Relationship to Head Daughter
Sex F
Color / Race White
Age 18
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Occupation Clerk
Industry Dry Goods Co.
Class of Worker W
Can Read Yes
Can Write Yes
Speaks English Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1930
Kings, New …
Daughter, age 28
Kings, New York · implied b. ~1902 — 5 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McDermott
Given Name Margaret
Relationship to Head Daughter
Sex F
Color / Race White
Age 28
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Can Read/Write Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Kings-County, New …
Daughter, age 38
Kings-County, New York · implied b. ~1902 — 6 household members
Surname McDermott
Given Name Margaret
Relationship to Head Daughter
Sex F
Color / Race White
Age 38
Marital Status Single
Birthplace New York
1935 Residence (City) New York City Brooklyn Boro
1935 Residence (County) Kings
Occupation Clerk
Industry Fred. Loeser
Class of Worker PW
Income (1939) 900
Highest Grade No 8
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.
Model Tree available
Our Model Tree links Margaret Mcdermott across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mcdermott (~0.92 confidence) and father John Mcdermott (~0.92 confidence) and mother Mary Mcdermott (~0.92 confidence) and mother Mary Mcdermott (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1 Parents confidence ≈ 0.92
Father
John Mcdermott
b. ~1871
Source father
● Household · direct · ~0.92
Father
John Mcdermott
b. ~1875
Source father
● Household · direct · ~0.92
Mother
Mary Mcdermott
b. ~1876
Source mother
● Household · direct · ~0.92
Mother
Mary Mcdermott
b. ~1873
Source mother
● Household · direct · ~0.92
This person
Anchor record
Margaret Mcdermott
Daughter · 1940 · age 38 · b. ~1902 · New York
★ You are viewing this record
Sibling
Lillian Price
Sibling · 1940 · age 38
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

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02611-00066)

Line Name Age Relation Occupation Birthplace
41 Archie Fitzgerald 18 Son Messenger New York
42 Edward Fitzgerald 16 Son Student New York
43 Margaret Fitzgerald 13 Daughter Student New York
44 John J. Mcdermott 65 Head Sexton New York
45 Mary Mcdermott 67 Wife Housewife New York
46 Margaret Mcdermott THIS PERSON 38 Daughter Clerk New York
47 Lillian Price 38 Daughter Clerk New York
48 Lillian Mahan 75 Sister-in-law Retired New York
49 Dorothy Mcdermott 16 Granddaughter Student New York
50 Margaret C. Harrigan 54 Head Housekeeper New York
51 Ida Goodman 65 Head Housewife Russia
52 Robert Goodman 43 Son Advertising New York
53 Mae Goodman 41 Son Salesman New York
54 William J. Phifer 58 Head Doorman New Jersey
55 Claribel Phifer 55 Wife Housewife New York
56 William F. Phifer 35 Son Salesman New Jersey
57 Emma Phifer 37 Daughter-in-law Housewife New York
58 Arthur Phifer 6 Grandson Student New York
59 William Jr. Phifer 4 Grandson — New York
60 Dorothy Phifer 1 Granddaughter — New York
61 William Mccafferty 37 Head Elevator Op. New York
62 Sarah Mccafferty 70 Mother Housewife Ireland
63 Anna Mccafferty 42 Sister Flat Work New York
64 Christina Mccafferty 33 Sister Wet Wash New York
65 John Senelin 51 Head Laborer New York
66 Anna Senelin 49 Wife Maid New York
67 John Senelin 22 Son Advertising New York
68 Nicholas Kaufold 65 Head Painter New York
69 Helena Kaufold 62 Wife Housewife Germany
70 Ethel Kaufold 31 Daughter Salesgirl New York
71 Richard Kaufold 27 Son Shipping Clk New York
72 Adolph Kaufold 23 Son Shipping Clk New York
73 Margaret Kaufold 21 Daughter Machinist New York
74 Edward Kaufold 20 Son Coast Guard New York
75 Mary Campbell 38 Head Teacher Mass.
76 Midget Campbell 67 Mother Housewife Ireland
77 James Gaffney 43 Head Letter Carrier Conn.
78 Mae Gaffney 34 Wife Housewife New York
79 Mildred Gaffney 18 Daughter Student New York
80 James Gaffney 16 Son Student New York

Search for Margaret Mcdermott

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Pedigree Summary

Margaret + 1 sibling
Gen 1 · 4 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)

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