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Margaret Mcgrath — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Margaret Mcgrath across the 1910, 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents Katherine & Edward — first a daughter (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Occupation | Clerk |
| Industry | Office |
| Class of Worker | PW |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Clerk |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Alma Mcgrath | Daughter | — | 25 | ~1915 |
| Katherine Mcgrath | Head | — | 78 | ~1862 |
| Agnes Mcgrath | Daughter | — | 22 | ~1918 |
| Margaret Mcgrath | Daughter | — | 30 | ~1910 |
Census Appearances
1910
Kings, New …
Daughter, age
Kings, New York · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1920
Kings, New …
Daughter, age 9
Kings, New York · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Daughter, age 20
Kings, New York · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Daughter, age 30
Kings-County, New York · implied b. ~1910 — 4 household members
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Occupation | Clerk |
| Industry | Office |
| Class of Worker | PW |
| Hours Worked | 0 |
| 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.
Our Model Tree links Margaret Mcgrath across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Katherine Mcgrath (~0.92 confidence) and father Edward Mcgrath (~0.92 confidence) and mother Margaret Mcgrath (~0.92 confidence) and father James Mcgrath (~0.92 confidence) and father John Mcgrath (~0.92 confidence) and mother Annie Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Katherine Mcgrath
b. ~1862
Source mother
● Household
· direct · ~0.92
Father
Edward Mcgrath
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Margaret Mcgrath
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
James Mcgrath
b. ~1883
Source father
● Household
· direct · ~0.92
Father
John Mcgrath
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Annie Mcgrath
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Mcgrath
Daughter · 1940 · age 30 · b. ~1910 · New York
★ You are viewing this record
Sibling
Alma Mcgrath
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Mcgrath
Sibling · 1940 · age 22
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-t0627-02577-00767)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hannah Parsons | 26 | Wife | — | New York |
| 42 | Le Roy Parsons | 7 | Son | — | New York |
| 43 | Jerome Parsons | 5 | Son | — | New York |
| 44 | Matilda Kuhn | 52 | Head | Packer | Austria |
| 45 | William Smith | 43 | Boarder | Superintendent | New York |
| 46 | Thomas Feeley | 33 | Head | — | New York |
| 47 | John C. Abbuche | 64 | Head | Sp. Officer | New Jersey |
| 48 | Katherine Abbuche | 63 | Wife | — | New York |
| 49 | William Kuhn | 38 | Head | Bank Clerk | Austria |
| 50 | Charles Johnson | 35 | Head | Stenog. Engr. | New York |
| 51 | Mclaughlin | 30 | Head | Clerk | New York |
| 52 | Irving Levine | 27 | Head | Salesman | New York |
| 53 | Levine | 23 | Wife | Saleslady | New York |
| 54 | Sidney Meltzer | 24 | Head | Salesman | New York |
| 55 | Ethel Meltzer | 31 | Wife | Saleswoman | New York |
| 56 | Leon C. Smith | 23 | Head | Clerk | Penna |
| 57 | Helen Smith | 25 | Wife | Typist | Penna |
| 58 | William F. Cuff | 47 | Head | Laborer | Connecticut |
| 59 | Pindos Trotter | 28 | Head | Cook | Greece |
| 60 | Maria Trotter | 27 | Wife | Waitress | Greece |
| 61 | Katherine Mcgrath | 78 | Head | Caretaker | New York |
| 62 | Margaret Mcgrath THIS PERSON | 30 | Daughter | Clerk | New York |
| 63 | Alma Mcgrath | 25 | Daughter | Clerk | New York |
| 64 | Agnes G. Mcgrath | 22 | Daughter | Teacher | New York |
| 65 | Orman C. Perkins | 48 | Head | Physician | Maine |
| 66 | Marguerite S. Perkins | 50 | Wife | — | Canada-Eng |
| 67 | Margaret Mcneilly | 44 | Servant | Gen. Housew. | Scotland |
| 68 | Christine Shaen | 80 | Head | — | New York |
| 69 | Johanna Alcott | 78 | Sister | — | New York |
| 70 | Annie O'Connell | 66 | Servant | Gen. Housew. | Eire |
| 71 | Sara A. Dougherty | 53 | Head | — | New York |
| 72 | Frank A. Dougherty | 62 | Brother | — | New York |
| 73 | Mabel S. Williams | 41 | Servant | Chambermaid | Montserrat |
| 74 | Mary E. Clark | 53 | Servant | Cook | Barbados |
| 75 | Donald Byrne | 29 | Head | Salesman | New York |
| 76 | Edmund Schwoerer | 44 | Head | Accountant | New York |
| 77 | Margaret Schwoerer | 33 | Wife | Pub. Health Nurse | Vermont |
| 78 | Mary A. Mcintyre | 43 | Head | Teacher | New York |
| 79 | Katherine Mcintyre | 30 | Sister | Secretary | New York |
| 80 | Romeo Giaquinto | 33 | Head | Salesman | New York |
Pedigree Summary
Margaret + 2 siblings
Gen 1 · 6 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)