WM
William Mcgrath — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clearfield-County, Pennsylvania
Our Model Tree links this William Mcgrath across the 1930 and 1940 US Censuses in Clearfield-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 8-person household.
Age 18
b. ~1922
Male
Son
Born: PENNSYLVANIA
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clearfield-County, Pennsylvania |
| Surname | MCGRATH |
| Given Name | WILLIAM A |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | PENNSYLVANIA |
| 1935 Residence (City) | DUBOIS CITY |
| 1935 Residence (County) | CLEARFIELD |
| Additional Details | |
| Occupation | NEW WORKER |
| Hours Worked | 37 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | SAME HOUSE |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Dubois City |
| Est. Birth Year | ~1922 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| John Mcgrath | Son | — | 19 | ~1921 |
| Margret Mcgrath | Daughter | — | 23 | ~1917 |
| William Mcgrath | Son | — | 18 | ~1922 |
| Joseph Mcgrath | Son | — | 12 | ~1928 |
| James Mcgrath | Son | — | 21 | ~1919 |
| Winifred Mcgrath | Spouse | — | 55 | ~1885 |
| Winifred Mcgrath | Daughter | — | 15 | ~1925 |
| John Mcgrath | Head | — | 55 | ~1885 |
Census Appearances
1930
Clearfield, Pennsylvania
Son, age 8
Clearfield, Pennsylvania · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | William A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Clearfield-County, Pennsylvania
Son, age 18
Clearfield-County, Pennsylvania · implied b. ~1922 — 8 household members
| Surname | MCGRATH |
| Given Name | WILLIAM A |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | PENNSYLVANIA |
| 1935 Residence (City) | DUBOIS CITY |
| 1935 Residence (County) | CLEARFIELD |
| Occupation | NEW WORKER |
| Hours Worked | 37 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | SAME HOUSE |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcgrath
Son · 1940 · age 18 · b. ~1922 · Pennsylvania
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Sibling
Winifred Mcgrath
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcgrath
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margret Mcgrath
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcgrath
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcgrath
Sibling · 1940 · age 12
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 — Clearfield-County, Pennsylvania
Open full size
1940 US Federal Census — Clearfield-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03470-00697)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Boyle | 46 | HEAD | Ticket Agent | PENNSYLVANIA |
| 2 | Lorena Boyle | 47 | WIFE | — | PENNSYLVANIA |
| 3 | Rita Boyle | 22 | DAUGHTER | Stenographer | PENNSYLVANIA |
| 4 | Lorraine Boyle | 19 | DAUGHTER | Telephone Operator | PENNSYLVANIA |
| 5 | John Jr Boyle | 18 | SON | — | PENNSYLVANIA |
| 6 | Ruth Boyle | 14 | DAUGHTER | — | PENNSYLVANIA |
| 7 | James Boyle | 12 | SON | — | PENNSYLVANIA |
| 8 | Thomas Kilmurray | 41 | HEAD | Locomotive Engineer | PENNSYLVANIA |
| 9 | Leon Kilmurray | 46 | WIFE | — | PENNSYLVANIA |
| 10 | Thomas Kilmurray | 19 | SON | — | PENNSYLVANIA |
| 11 | Frances Malloy | 23 | DAUGHTER | New Worker | PENNSYLVANIA |
| 12 | John Mccool | 63 | HEAD | — | IRISH FREE STATE |
| 13 | Agnes Mccool | 61 | WIFE | — | PENNSYLVANIA |
| 14 | John Brooks | 38 | HEAD | Proprietor | PENNSYLVANIA |
| 15 | Isabella Brooks | 32 | WIFE | Waitress | PENNSYLVANIA |
| 16 | Norman Heigalman | 11 | STEP-SON | — | PENNSYLVANIA |
| 17 | Nora Brooks | 68 | MOTHER | — | PENNSYLVANIA |
| 18 | Ray Blackmun | 29 | HEAD | Furnace Installation | MICHIGAN |
| 19 | Catherine Blackmun | 35 | WIFE | — | MICHIGAN |
| 20 | Thomas Blackmun | 4 | SON | — | PENNSYLVANIA |
| 21 | Donna Blackmun | 1 | DAUGHTER | — | PENNSYLVANIA |
| 22 | Leland Albright | 39 | HEAD | Insurance Agent | PENNSYLVANIA |
| 23 | Clara Albright | 37 | WIFE | — | PENNSYLVANIA |
| 24 | Leland Jr Albright | 9 | SON | — | PENNSYLVANIA |
| 25 | Suzanne Albright | 6 | DAUGHTER | — | PENNSYLVANIA |
| 26 | William K Albright | 3 | SON | — | PENNSYLVANIA |
| 27 | John B Mcgrath | 55 | HEAD | Timekeeper | PENNSYLVANIA |
| 28 | Winifred Mcgrath | 55 | WIFE | — | PENNSYLVANIA |
| 29 | Margret M Mcgrath | 23 | DAUGHTER | Secretary | PENNSYLVANIA |
| 30 | James F Mcgrath | 21 | SON | Salesman | PENNSYLVANIA |
| 31 | John S Mcgrath | 19 | SON | New Worker | PENNSYLVANIA |
| 32 | William A Mcgrath THIS PERSON | 18 | SON | New Worker | PENNSYLVANIA |
| 33 | Winifred J Mcgrath | 15 | DAUGHTER | — | PENNSYLVANIA |
| 34 | Joseph E Mcgrath | 12 | SON | — | PENNSYLVANIA |
| 35 | John J Reilly | 39 | HEAD | Machinist | PENNSYLVANIA |
| 36 | Bertha L Reilly | 37 | WIFE | — | PENNSYLVANIA |
| 37 | John J Reilly | 5 | SON | — | PENNSYLVANIA |
| 38 | George D Reilly | 3 | SON | — | PENNSYLVANIA |
| 39 | James P Lennon | 68 | HEAD | — | SCOTLAND |
| 40 | Hanna C Lennon | 58 | SISTER | Seamstress | PENNSYLVANIA |
Related Census Records
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)