WM
William Mcgrath — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Plymouth, Massachusetts
Our Model Tree links this William Mcgrath across the 1920 and 1930 US Censuses in Plymouth, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1907), then head of a 10-person household.
Age 23
b. ~1907
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Plymouth, Massachusetts |
| Surname | McGrath |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Steam laundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Chauffeur |
| Township / Ward | Brockton City |
| Est. Birth Year | ~1907 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Rosalie Mcgrath | Daughter | — | 20 | ~1910 |
| John Mcgrath | Head | — | 60 | ~1870 |
| Milton Mcgrath | Son | — | 28 | ~1902 |
| Edwin Mcgrath | Son | — | 24 | ~1906 |
| Muriel Mcgrath | Daughter | — | 15 | ~1915 |
| Ina Mcgrath | Daughter | — | 26 | ~1904 |
| Elizabeth Mcgrath | Spouse | — | 56 | ~1874 |
| James Mcgrath | Son | — | 29 | ~1901 |
| Marion Mcgrath | Daughter | — | 31 | ~1899 |
| William Mcgrath | Son | — | 23 | ~1907 |
Census Appearances
1920
Plymouth, Massachusetts
Son, age 12
Plymouth, Massachusetts · implied b. ~1908 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | William L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Plymouth, Massachusetts
Son, age 23
Plymouth, Massachusetts · implied b. ~1907 — 10 household members
| Surname | McGrath |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Chauffeur |
| Industry | Steam laundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 William Mcgrath across 2 US Census years (1920 and 1930) in Plymouth, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcgrath
Son · 1930 · age 23 · b. ~1907 · Massachusetts
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Sibling
Rosalie Mcgrath
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ina Mcgrath
Sibling · 1930 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Mcgrath
Sibling · 1930 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcgrath
Sibling · 1930 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Mcgrath
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Milton Mcgrath
Sibling · 1930 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Muriel Mcgrath
Sibling · 1930 · age 15
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
1930 US Federal Census — Plymouth, Massachusetts
Open full size
1930 US Federal Census — Plymouth, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel939:0274)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Murphy | 69 | Head | — | Irish Free State |
| 52 | Louis Martin | 45 | Son-in-law | Shoeworker | Massachusetts |
| 53 | Florence Martin | 42 | Daughter | — | Massachusetts |
| 54 | James S. Martin | 20 | Grandson | Shoeworker | Massachusetts |
| 55 | Kathryn Martin | 18 | Granddaughter | Teacher | Massachusetts |
| 56 | George Martin | 16 | Grandson | — | Massachusetts |
| 57 | John Martin | 15 | Grandson | — | Massachusetts |
| 58 | Nellie Sullivan | 58 | Head | — | Irish Free State |
| 59 | Elizabeth Sullivan | 34 | Daughter | Shoeworker | Massachusetts |
| 60 | Timothy Sullivan | 31 | Son | Plumber | Massachusetts |
| 61 | Arlene Sullivan | 24 | Daughter | — | Massachusetts |
| 62 | Patrick Burke | 73 | Brother | Janitor | Ireland |
| 63 | John F. Mcgrath | 60 | Head | Artist | Massachusetts |
| 64 | Elizabeth Mcgrath | 56 | Wife | — | Massachusetts |
| 65 | Marion Mcgrath | 31 | Daughter | Shoeworker | Massachusetts |
| 66 | James R. Mcgrath | 29 | Son | Clerk | Massachusetts |
| 67 | Milton Mcgrath | 28 | Son | Manager | Massachusetts |
| 68 | Ina L. Mcgrath | 26 | Daughter | Shoeworker | Massachusetts |
| 69 | Edwin L. Mcgrath | 24 | Son | Clerk | Massachusetts |
| 70 | William J. Mcgrath THIS PERSON | 23 | Son | Chauffeur | Massachusetts |
| 71 | Rosalie R. Mcgrath | 20 | Daughter | Shoeworker | Massachusetts |
| 72 | Muriel M. Mcgrath | 15 | Daughter | — | Massachusetts |
| 73 | Henry Whalen | 49 | Head | Chauffeur | Massachusetts |
| 74 | Elnora Whalen | 47 | Wife | — | Irish Free State |
| 75 | Geraldine Whalen | 20 | Daughter | Shoeworker | Massachusetts |
| 76 | Samuel Walker | 44 | Head | Cutter | England |
| 77 | Katherine Walker | 40 | Wife | — | Massachusetts |
| 78 | Elmer W. Walker | 16 | Son | — | Massachusetts |
| 79 | Muriel K. Walker | 12 | Daughter | — | Massachusetts |
| 80 | Edwin T. Walker | 9 | Son | — | Massachusetts |
| 81 | Joseph Housbo | 57 | Boarder | — | Massachusetts |
| 82 | Hattie Farrar | 48 | Boarder | — | Massachusetts |
| 83 | Paul Farrar | 34 | Boarder | — | Massachusetts |
| 84 | Eugene Libby | 38 | Boarder | — | Massachusetts |
| 85 | Lottie C. Harding | 53 | Head | — | Massachusetts |
| 86 | Elmer M. Harding | 28 | Son | Chauffeur | Massachusetts |
| 87 | Richard O. Tripp | 65 | Brother | — | Massachusetts |
| 88 | Louis J. Sheehan | 28 | Head | Foreman | Massachusetts |
| 89 | Ethel B. Sheehan | 26 | Wife | — | Massachusetts |
| 90 | Richard Sheehan | 4 | Son | — | Massachusetts |
| 91 | Joseph Sheehan | 25 | Head | Chauffeur | Massachusetts |
| 92 | Dorothy Sheehan | 22 | Wife | — | Massachusetts |
| 93 | Lorraine Sheehan | 1 | Daughter | — | Massachusetts |
| 94 | Virginia Sheehan | 0 | Daughter | — | Massachusetts |
| 95 | James F. Welch | 45 | Head | Night Clerk | Massachusetts |
| 96 | Katherine Welch | 41 | Sister | Shoeworker | Massachusetts |
| 97 | Susan Welch | 40 | Sister | — | Massachusetts |
| 98 | Rose Murphy | 30 | Sister | Secretary | Massachusetts |
| 99 | Ambrose Murphy | 30 | Brother-in-law | Pay Teller | Massachusetts |
| 100 | Cornelius Ford | 62 | Head | Shoeworker | Irish Free State |
Related Census Records
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)