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Mary Mcgrath — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Mcgrath across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 3-person household.
Age 63
b. ~1867
Female
Head
Born: Massachusetts
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | McGrath |
| Given Name | Mary E |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Massachusetts |
| Age at First Marriage | 20 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 10.00 |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1867 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Mcgrath | Daughter | — | 36 | ~1894 |
| Mary Mcgrath | Head | — | 63 | ~1867 |
| Charles Mcgrath | Other | — | 54 | ~1876 |
Census Appearances
1920
Middlesex, Massachusetts
Spouse, age 52
Middlesex, Massachusetts · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Head, age 63
Middlesex, Massachusetts · implied b. ~1867 — 3 household members
| Surname | McGrath |
| Given Name | Mary E |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Massachusetts |
| Age at First Marriage | 20 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 10.00 |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Other, age 76
Middlesex-County, Massachusetts · implied b. ~1864 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Mary |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Framingham town |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 8 |
| 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 Mary Mcgrath across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mcgrath
Head · 1930 · age 63 · b. ~1867 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
48 people indexed on this census page (ia:1930:massachusettscensus00reel920:0184)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Peter Riley | 45 | Head | Painter | Massachusetts |
| 2 | Mary A Riley | 45 | Wife | — | Rhode Island |
| 3 | James A Riley | 12 | Son | — | Massachusetts |
| 4 | Alice Florence J Riley | 7 | Daughter | — | Massachusetts |
| 5 | Adam Levinski | 40 | Head | Weaver | Poland |
| 6 | Mary Levinski | 37 | Wife | — | Poland |
| 7 | Edward Levinski | 15 | Son | — | New Hampshire |
| 8 | Mitchell Levinski | 12 | Son | — | Massachusetts |
| 9 | Alexander Balsiewicz | 45 | Head | Arm Hand | Poland |
| 10 | Helena Balsiewicz | 41 | Wife | Presser | Poland |
| 11 | Stanislaw Balsiewicz | 18 | Daughter | — | New Hampshire |
| 12 | Bronislaw Balsiewicz | 16 | Son | — | New Hampshire |
| 13 | Adela Balsiewicz | 14 | Daughter | — | Massachusetts |
| 14 | Irene Balsiewicz | 9 | Daughter | — | Massachusetts |
| 15 | Andrew Balsiewicz | 28 | Son | — | Poland |
| 16 | Annie Balsiewicz | 25 | Daughter | — | Poland |
| 17 | Jacob Brodsky | 42 | Head | Tailor | Russia |
| 18 | Mary Brodsky | 38 | Wife | — | Russia |
| 19 | Samuel Brodsky | 15 | Son | — | New York |
| 20 | Ruth Brodsky | 11 | Daughter | — | New York |
| 21 | Gertrude Brodsky | 8 | Daughter | — | Massachusetts |
| 22 | Sidney Brodsky | 6 | Son | — | New York |
| 23 | Joseph Jamin | 48 | Head | Merchant | Lithuania |
| 24 | Edith Jamin | 41 | Wife | — | Lithuania |
| 25 | Molly Jamin | 16 | Daughter | Stenog | Massachusetts |
| 26 | Hilda Jamin | 13 | Daughter | — | Massachusetts |
| 27 | Ruth Jamin | 9 | Daughter | — | Massachusetts |
| 28 | Ignace Cyprian | 49 | Head | Weaver | Poland |
| 29 | Anna Cyprian | 36 | Wife | — | Poland |
| 30 | Helen Cyprian | 16 | Daughter | — | Massachusetts |
| 31 | Edward Cyprian | 12 | Son | — | Massachusetts |
| 32 | Edwin Cyprian | 10 | Son | — | Massachusetts |
| 33 | Stanley Cyprian | 8 | Son | — | Massachusetts |
| 34 | Anthony Perry | 39 | Head | Weaver | Massachusetts |
| 35 | Katherine Perry | 37 | Wife | — | Massachusetts |
| 36 | Arthur Perry | 18 | Son | — | Massachusetts |
| 37 | Veronica Dupa | 32 | Sister | Spinner | Poland |
| 38 | Mary E Mcgrath THIS PERSON | 63 | Head | — | Massachusetts |
| 39 | Helen A Mcgrath | 36 | Daughter | Weaver | Massachusetts |
| 40 | Charles J Mcgrath | 54 | Brother | — | Massachusetts |
| 41 | Catherine Woods | 37 | Head | Private Family | Canada English |
| 42 | John Woods | 16 | Son | — | Maine |
| 43 | George Woods | 14 | Son | — | Maine |
| 44 | Edward Woods | 12 | Son | — | Massachusetts |
| 45 | Rita Woods | 8 | Daughter | — | Massachusetts |
| 46 | Dorothy Woods | 6 | Daughter | — | Massachusetts |
| 47 | Eva Alexander | 52 | Head | — | Lithuania |
| 48 | Gertrude Alexander | 20 | Daughter | Billing Clerk | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)