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Margaret Mcgrath — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Margaret Mcgrath across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 12-person household.
Age 10
b. ~1930
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | McGRATH |
| Given Name | MARGARET J |
| Relationship to Head | DAUGHTER |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1930 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Patrick Mcgrath | Head | — | 54 | ~1886 |
| Elizabeth Mcgrath | Spouse | — | 51 | ~1889 |
| Charles Mcgrath | Son | — | 6 | ~1934 |
| Barbara Mcgrath | Daughter | — | 14 | ~1926 |
| Dorothy Mcgrath | Daughter | — | 19 | ~1921 |
| Geraldine Mcgrath | Daughter | — | 11 | ~1929 |
| Corinne Mcgrath | Daughter | — | 12 | ~1928 |
| Patrick Mcgrath | Son | — | 17 | ~1923 |
| Margaret Mcgrath | Daughter | — | 10 | ~1930 |
| Catherine Mcgrath | Daughter | — | 13 | ~1927 |
| Mary Mcgrath | Daughter | — | 28 | ~1912 |
| Leona Mcgrath | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age
Suffolk, Massachusetts · implied b. ~1930 — 15 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 | Massachusetts |
| Father's Birthplace | Newfoundland |
| Mother's Birthplace | Canada English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 10
Suffolk-County, Massachusetts · implied b. ~1930 — 12 household members
| Surname | McGRATH |
| Given Name | MARGARET J |
| Relationship to Head | DAUGHTER |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Mcgrath
Daughter · 1940 · age 10 · b. ~1930 · Massachusetts
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Sibling
Leona Mcgrath
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Mcgrath
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Mcgrath
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Corinne Mcgrath
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mcgrath
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Mcgrath
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcgrath
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geraldine Mcgrath
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mcgrath
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01671-00542)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Sullivan | 67 | HEAD | Timekeeper | Eire |
| 2 | Mary Sullivan | 56 | WIFE | — | Eire |
| 3 | James Sullivan | 16 | SON | — | Massachusetts |
| 4 | Fred Leighton | 34 | SON-IN-LAW | Porter | New Jersey |
| 5 | Eileen Leighton | 30 | DAUGHTER | — | Massachusetts |
| 6 | Frederick Leighton | 11 | GRAND-SON | — | Massachusetts |
| 7 | Joseph Leighton | 8 | GRAND-SON | — | Massachusetts |
| 8 | Patrick B Mcgrath | 54 | HEAD | Yard Conductor | Newfoundland |
| 9 | Elizabeth Mcgrath | 51 | WIFE | — | Nova Scotia |
| 10 | Mary F Mcgrath | 28 | DAUGHTER | Finisher | Nova Scotia |
| 11 | Leona E Mcgrath | 21 | DAUGHTER | Bundle Girl | Nova Scotia |
| 12 | Dorothy Mcgrath | 19 | DAUGHTER | Attendant Nurse | Nova Scotia |
| 13 | Patrick J Mcgrath | 17 | SON | — | Massachusetts |
| 14 | Barbara T Mcgrath | 14 | DAUGHTER | — | Massachusetts |
| 15 | Catherine D Mcgrath | 13 | DAUGHTER | — | Massachusetts |
| 16 | Corinne G Mcgrath | 12 | DAUGHTER | — | Massachusetts |
| 17 | Geraldine M Mcgrath | 11 | DAUGHTER | — | Massachusetts |
| 18 | Margaret J Mcgrath THIS PERSON | 10 | DAUGHTER | — | Massachusetts |
| 19 | Charles F Mcgrath | 6 | SON | — | Massachusetts |
| 20 | Nora Hogan | 46 | HEAD | — | Eire |
| 21 | John Drinan | 50 | BROTHER | Laborer | Eire |
| 22 | Carrie Robertson | 49 | HEAD | Restaurateur | Massachusetts |
| 23 | Charles H Hartley | 62 | BROTHER | Elevator Constructor | Massachusetts |
| 24 | Charles Hayes | 28 | NEPHEW | New Worker | Massachusetts |
| 25 | Patrick Griffin | 52 | HEAD | Laborer | Eire |
| 26 | Catherine Griffin | 53 | WIFE | — | Eire |
| 27 | Daniel Griffin | 25 | SON | Clerk | Massachusetts |
| 28 | James Griffin | 18 | SON | — | Massachusetts |
| 29 | John Griffin | 13 | SON | — | Massachusetts |
| 30 | Helena Stewart | 56 | HEAD | Checker | Massachusetts |
| 31 | Jeremiah Scanlon | 88 | UNCLE | — | Eire |
| 32 | James O'Brien | 77 | HEAD | — | Eire |
| 33 | Alice Sullivan | 49 | DAUGHTER | — | Massachusetts |
| 34 | Catherine O'Brien | 45 | DAUGHTER | Clerk | Massachusetts |
| 35 | James O'Brien | 43 | SON | Gas Checker | Massachusetts |
| 36 | Alice Sullivan | 19 | GRAND-DAUGHTER | — | Massachusetts |
| 37 | Joseph Sullivan | 16 | GRAND-SON | — | Massachusetts |
| 38 | Michael J Radoslavich | 60 | HEAD | Chef | Italy |
| 39 | Caroline J Radoslavich | 54 | WIFE | — | Massachusetts |
| 40 | Marie A Radoslavich | 21 | DAUGHTER | Artist | Massachusetts |
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)