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John Mcgrath — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clearfield-County, Pennsylvania
Our Model Tree links this John Mcgrath across the 1920, 1930 and 1940 US Censuses in Clearfield-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 2-person household.
Age 68
b. ~1872
Male
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Clearfield-County, Pennsylvania |
| Surname | McGrath |
| Given Name | John X |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | New Liberty |
| 1935 Residence (County) | Clearfield |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Coal Mines |
| Industry | PW |
| Class of Worker | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same House |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Coal Mines |
| Township / Ward | New Liberty |
| Est. Birth Year | ~1872 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Mcgrath | Head | — | 68 | ~1872 |
| Dennis Mcgrath | Son | — | 42 | ~1898 |
Census Appearances
1920
Clearfield, Pennsylvania
Head, age 51
Clearfield, Pennsylvania · implied b. ~1869 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Ireland |
| Year of Naturalization | 1891 |
| Birthplace (normalized) | ireland |
1930
Clearfield, Pennsylvania
Head, age 58
Clearfield, Pennsylvania · implied b. ~1872 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1885 |
| Age at First Marriage | 26 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Miner |
| Industry | Coal Mines |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Value / Rent | 600 |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Clearfield-County, Pennsylvania
Head, age 68
Clearfield-County, Pennsylvania · implied b. ~1872 — 2 household members
| Surname | McGrath |
| Given Name | John X |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | New Liberty |
| 1935 Residence (County) | Clearfield |
| Naturalization Status | Naturalized |
| Occupation | Coal Mines |
| Industry | PW |
| Class of Worker | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same House |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 John 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
John Mcgrath
Head · 1940 · age 68 · b. ~1872 · Pennsylvania
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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-t0627-03470-00335)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gwendolyn Doran | 20 | Wife | Saleslady | Pennsylvania |
| 42 | William Doran | 1 | Son | — | Pennsylvania |
| 43 | Judith M Doran | 0 | Daughter | — | Pennsylvania |
| 44 | Thomas Crago | 36 | Head | Merchant | Pennsylvania |
| 45 | Esther X Crago | 34 | Wife | — | Pennsylvania |
| 46 | Elizabeth J Crago | 12 | Daughter | — | Pennsylvania |
| 47 | Selma May Crago | 9 | Daughter | — | Pennsylvania |
| 48 | Donna Rae Crago | 3 | Daughter | — | Pennsylvania |
| 49 | Agnes Voyzey | 76 | Mother-in-law | — | England |
| 50 | Martin Foley | 59 | Head | Blacksmith | Pennsylvania |
| 51 | Frances X Foley | 49 | Wife | — | Pennsylvania |
| 52 | Mary Foley | 24 | Daughter | Saleslady | Pennsylvania |
| 53 | Francis Foley | 12 | Son | — | Pennsylvania |
| 54 | Charles Foley | 10 | Son | — | Pennsylvania |
| 55 | John Foley | 8 | Son | — | Pennsylvania |
| 56 | John X Clark | 19 | Head | Laborer | Pennsylvania |
| 57 | Virginia Clark | 20 | Wife | — | Pennsylvania |
| 58 | Carol D Clark | 0 | Daughter | — | Pennsylvania |
| 59 | Victoria Samuels | 86 | Head | — | Austria |
| 60 | Frank Brock | 57 | Son | Miner | Austria |
| 61 | Andrew Samuels | 39 | Son | Miner | Pennsylvania |
| 62 | Richard X Mathews | 71 | Head | Bituminous Coal Mines | Pennsylvania |
| 63 | Margaret Mathews | 57 | Wife | — | England |
| 64 | Bubba Ann Quick | 3 | Granddaughter | — | Pennsylvania |
| 65 | John X Mcgrath THIS PERSON | 68 | Head | Coal Mines | Ireland |
| 66 | Dennis J Mcgrath | 42 | Son | Coal Mines | Pennsylvania |
| 67 | Samuel Hughes | 36 | Head | Mechanic | Pennsylvania |
| 68 | Bernice X Hughes | 32 | Wife | — | Pennsylvania |
| 69 | Eugene E Hughes | 6 | Son | — | Pennsylvania |
| 70 | Marvin D Hughes | 3 | Son | — | Pennsylvania |
| 71 | Charles X Hughes | 67 | Head | Wpa Road Construction | Pennsylvania |
| 72 | Margaret Hughes | 48 | Wife | Seamstress | Pennsylvania |
| 73 | Margaret Hughes | 16 | Daughter | New Worker | Pennsylvania |
| 74 | Samuel Layton | 31 | Son | Coal Mines | Pennsylvania |
| 75 | Alice Demchak | 22 | Daughter | — | Pennsylvania |
| 76 | Nola Demchak | 2 | Granddaughter | — | Pennsylvania |
| 77 | Evelyn J Demchak | 0 | Granddaughter | — | Pennsylvania |
| 78 | James Callahan | 52 | Head | Laborer | Pennsylvania |
| 79 | Gertta X Callahan | 45 | Wife | — | Pennsylvania |
| 80 | Mary Callahan | 25 | Daughter | Stenographer | Pennsylvania |
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)