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John Mcgrath — 1930 US Census Record
Model Tree available1930 United States Federal Census · Lackawanna, Pennsylvania
Our Model Tree links this John Mcgrath across the 1910, 1920 and 1930 US Censuses in Lackawanna, Pennsylvania (XGBoost, ~Confirmed), with identified parents Dr & W — first a son (b.~1910), then head of a 6-person household.
Age 20
b. ~1910
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lackawanna, Pennsylvania |
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Dunmore Borough |
| Est. Birth Year | ~1910 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Anna Mcgrath | Head | — | 47 | ~1883 |
| Henry Mcgrath | Son | — | 15 | ~1915 |
| John Mcgrath | Son | — | 20 | ~1910 |
| Charles Mcgrath | Son | — | 10 | ~1920 |
| Francis Mcgrath | Son | — | 19 | ~1911 |
| Timothy Mcgrath | Son | — | 22 | ~1908 |
Census Appearances
1910
Lackawanna, Pennsylvania
Son, age 1
Lackawanna, Pennsylvania · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Lackawanna, Pennsylvania
Son, age 10
Lackawanna, Pennsylvania · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Lackawanna, Pennsylvania
Son, age 20
Lackawanna, Pennsylvania · implied b. ~1910 — 6 household members
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| 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 3 US Census years (1910, 1920 and 1930) in Lackawanna, Pennsylvania, using XGBoost record linkage. Identified parents: father Dr Mcgrath (~0.92 confidence) and father W Mcgrath (~0.92 confidence) and mother Mary Mcgrath (~0.92 confidence) and mother Anna Mcgrath (~0.92 confidence) and mother Anna Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Dr Mcgrath
b. ~1875
Source father
● Household
· direct · ~0.92
Father
W Mcgrath
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Mary Mcgrath
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Anna Mcgrath
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Anna Mcgrath
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mcgrath
Son · 1930 · age 20 · b. ~1910 · Pennsylvania
★ You are viewing this record
Sibling
Henry Mcgrath
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mcgrath
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mcgrath
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Timothy Mcgrath
Sibling · 1930 · 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
1930 US Federal Census — Lackawanna, Pennsylvania
Open full size
1930 US Federal Census — Lackawanna, Pennsylvania
Page Contents
48 people indexed on this census page (ia:1930:fifteenthcensus00reel2049:0977)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Andrew P. Gavin | 53 | Head | Insurance | Pennsylvania |
| 52 | Mary Gavin | 48 | Wife | — | Pennsylvania |
| 53 | Eleanor Gavin | 22 | Daughter | — | Pennsylvania |
| 54 | William Gavin | 18 | Son | — | Pennsylvania |
| 55 | Ruth Gavin | 16 | Daughter | — | Pennsylvania |
| 56 | Andrew J. Gavin | 14 | Son | — | Pennsylvania |
| 57 | Mary Mctague | 17 | Servant | Servant | Pennsylvania |
| 58 | Walter Briggs | 70 | Head | Attorney | Pennsylvania |
| 59 | Mary Briggs | 67 | Wife | — | Pennsylvania |
| 60 | Margaret Briggs | 32 | Daughter | District Secretary | Pennsylvania |
| 61 | Mary Barbine | 58 | Servant | Servant | Pennsylvania |
| 62 | Marion O'Brien | 21 | Daughter | — | Pennsylvania |
| 63 | Richard Patrick | 62 | Head | Manager | Pennsylvania |
| 64 | Katherine Patrick | 61 | Wife | — | Pennsylvania |
| 65 | John Patrick | 33 | Son | — | Pennsylvania |
| 66 | Mary Patrick | 24 | Daughter | Teacher | Pennsylvania |
| 67 | Ralph Raymer | 45 | Head | Manager | Pennsylvania |
| 68 | Irene Raymer | 40 | Wife | — | Pennsylvania |
| 69 | Ralph Jr. Raymer | 12 | Son | — | Pennsylvania |
| 70 | Betty Anne Raymer | 7 | Daughter | — | Pennsylvania |
| 71 | Anna Boles | 35 | Servant | Servant | Pennsylvania |
| 72 | John W. Howarth | 76 | Head | Proprietor | Pennsylvania |
| 73 | Helen Howarth | 40 | Daughter | Social Worker | Pennsylvania |
| 74 | George G. Brooks | None | Head | Broker | Pennsylvania |
| 75 | Grace Brooks | None | Wife | — | Pennsylvania |
| 76 | James Brooks | 24 | Son | Broker | Pennsylvania |
| 77 | George Jr. Brooks | 21 | Son | — | Pennsylvania |
| 78 | Charles Brooks | 17 | Son | — | Pennsylvania |
| 79 | Margaret Melody | 20 | Servant | Servant | Free State Ireland |
| 80 | Mary Horan | 22 | Servant | Servant | Free State Ireland |
| 81 | Mary Knight | 40 | Servant | Servant | Free State Ireland |
| 82 | Margaret Mclaughlin | 46 | Servant | Servant | Free State Ireland |
| 83 | Edgar Peck | 67 | Head | Proprietor | Pennsylvania |
| 84 | Pauline Peck | 66 | Wife | — | Pennsylvania |
| 85 | Angie Peck | 35 | Daughter | — | Pennsylvania |
| 86 | Katherine Peck | 29 | Daughter | — | Pennsylvania |
| 87 | Anna Mcgrath | 47 | Head | — | New York |
| 88 | Timothy Mcgrath | 22 | Son | Contracting | Pennsylvania |
| 89 | John Mcgrath THIS PERSON | 20 | Son | — | Pennsylvania |
| 90 | Francis Mcgrath | 19 | Son | — | Pennsylvania |
| 91 | Henry Mcgrath | 15 | Son | — | Pennsylvania |
| 92 | Charles Mcgrath | 10 | Son | — | Pennsylvania |
| 93 | Frank Clark | 38 | Head | Contractor | Pennsylvania |
| 94 | Clementine Clark | 38 | Wife | — | Pennsylvania |
| 95 | Frank Jr. Clark | 4 | Son | — | Pennsylvania |
| 96 | Suzanne Clark | 2 | Daughter | — | Pennsylvania |
| 97 | Margaret Clark | 1 | Daughter | — | Pennsylvania |
| 98 | Helen Bolsar | 15 | Servant | Servant | Pennsylvania |
Pedigree Summary
John + 4 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)