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John Mcgrath — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Luzerne-County, Pennsylvania
Our Model Tree links this John Mcgrath across the 1930 and 1940 US Censuses in Luzerne-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 11-person household.
Age 18
b. ~1922
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Luzerne-County, Pennsylvania |
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Nanticoke City |
| 1935 Residence (County) | Luzerne |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | G 7 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Nanticoke 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcgrath | Daughter | — | 9 | ~1931 |
| Eleanor Mcgrath | Daughter | — | 22 | ~1918 |
| Sadie Mcgrath | Daughter | — | 15 | ~1925 |
| Rita Mcgrath | Daughter | — | 19 | ~1921 |
| Francis Mcgrath | Daughter | — | 14 | ~1926 |
| Rose Mcgrath | Daughter | — | 15 | ~1925 |
| John Mcgrath | Head | — | 43 | ~1897 |
| Michael Mcdonough | Other | — | 55 | ~1885 |
| Harold Mcgrath | Son | — | 5 | ~1935 |
| John Mcgrath | Son | — | 18 | ~1922 |
| Elizabeth Mcgrath | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Luzerne, Pennsylvania
Son, age 6
Luzerne, Pennsylvania · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Luzerne-County, Pennsylvania
Son, age 18
Luzerne-County, Pennsylvania · implied b. ~1922 — 11 household members
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Nanticoke City |
| 1935 Residence (County) | Luzerne |
| Class of Worker | 0 |
| Highest Grade | G 7 |
| 1935 Residence | Same place |
| 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 John Mcgrath across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcgrath
Son · 1940 · age 18 · b. ~1922 · Pennsylvania
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Sibling
Mary Mcgrath
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Mcgrath
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sadie Mcgrath
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mcgrath
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mcgrath
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Mcgrath
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Mcgrath
Sibling · 1940 · age 22
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 — Luzerne-County, Pennsylvania
Open full size
1940 US Federal Census — Luzerne-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03556-00679)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alexander Seneszkiewicz | 19 | Son | Laborer | Pennsylvania |
| 2 | Verna Seneszkiewicz | 16 | Daughter | — | Pennsylvania |
| 3 | Helen Seneszkiewicz | 13 | Daughter | — | Pennsylvania |
| 4 | Andrew Seneszkiewicz | 10 | Son | — | Pennsylvania |
| 6 | Sophia Rebuneuski | Rebureuski | 61 | Head | Laborer | Poland |
| 7 | Walter Zabus | 33 | Head | Laborer | Pennsylvania |
| 8 | Eleanor Zabus | 27 | Wife | — | Pennsylvania |
| 9 | Stacia Zabus | 5 | Daughter | — | Pennsylvania |
| 10 | Joseph Zabus | 4 | Son | — | Pennsylvania |
| 11 | Walter Jr. Zabus | 2 | Son | — | Pennsylvania |
| 12 | Andrew Ripski | 34 | Head | Miner | Pennsylvania |
| 13 | Catherine Ripski | 32 | Wife | — | Pennsylvania |
| 14 | Verna Ripski | 14 | Daughter | — | Pennsylvania |
| 15 | Edward Ripski | 10 | Son | — | Pennsylvania |
| 16 | Joseph Shimanski | 49 | Head | Miner | Pennsylvania |
| 17 | Sophie Shimanski | 49 | Wife | — | Pennsylvania |
| 18 | Joseph Shimanski | 23 | Son | Miner | Pennsylvania |
| 19 | Andrew Shimanski | 19 | Daughter | Son | — | Pennsylvania |
| 20 | Clem Shimanski | 18 | Son | — | Pennsylvania |
| 21 | Stanley Shimanski | 16 | Son | — | Pennsylvania |
| 22 | August Young | 45 | Head | Laborer | Pennsylvania |
| 23 | Margaret Young | 43 | Wife | — | Pennsylvania |
| 24 | Theodore Young | 23 | Son | — | Pennsylvania |
| 25 | Wayne Young | 17 | Son | — | Pennsylvania |
| 26 | Anthony Young | 9 | Son | — | Pennsylvania |
| 27 | Elliott Megarey | 38 | Boarder | Laborer | Pennsylvania |
| 28 | Wanda Smith | 34 | Head | Examiner | Pennsylvania |
| 29 | Irene Smith | 16 | Daughter | — | Pennsylvania |
| 30 | John Mcgrath | 43 | Head | Laborer | Pennsylvania |
| 31 | Elizabeth Mcgrath | 39 | Wife | — | Pennsylvania |
| 32 | Eleanor Mcgrath | 22 | Daughter | Assistance | Pennsylvania |
| 33 | Rita Mcgrath | 19 | Daughter | Assistance | Pennsylvania |
| 34 | John Mcgrath THIS PERSON | 18 | Son | — | Pennsylvania |
| 35 | Rose Mcgrath | 15 | Daughter | — | Pennsylvania |
| 36 | Sadie Mcgrath | 15 | Daughter | — | Pennsylvania |
| 37 | Francis Mcgrath | 14 | Daughter | — | Pennsylvania |
| 38 | Mary Mcgrath | 9 | Daughter | — | Pennsylvania |
| 39 | Harold Mcgrath | 5 | Son | — | Pennsylvania |
| 40 | Michael Mcdonough | 55 | Boarder | — | 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)