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John Mcgrath — 1930 US Census Record
Model Tree available1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this John Mcgrath across the 1910, 1920 and 1930 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed), with identified parents Margaret & John — first a son (b.~1904), then head of a 6-person household.
Age 26
b. ~1904
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Ice Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Chauffeur |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1904 |
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 |
|---|---|---|---|---|
| Mary Mcgrath | Head | — | 51 | ~1879 |
| Chas O'Neil | Other | — | 42 | ~1888 |
| Catherine Mcdevitt | Other | — | 60 | ~1870 |
| John Mcgrath | Son | — | 26 | ~1904 |
| Wm Mcgrath | Son | — | 20 | ~1910 |
| Thos Mcgrath | Son | — | 11 | ~1919 |
Census Appearances
1910
Philadelphia, Pennsylvania
Son, age 6
Philadelphia, Pennsylvania · implied b. ~1904 — 6 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 |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Son, age 16
Philadelphia, Pennsylvania · implied b. ~1904 — 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 | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 26
Philadelphia, Pennsylvania · implied b. ~1904 — 6 household members
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Chauffeur |
| Industry | Ice Plant |
| Class of Worker | W |
| 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 Philadelphia, Pennsylvania, using XGBoost record linkage. Identified parents: mother Margaret Mcgrath (~0.92 confidence) and father John Mcgrath (~0.92 confidence) and father James Mcgrath (~0.92 confidence) and mother Margaret Mcgrath (~0.92 confidence) and mother Mary Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Margaret Mcgrath
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
John Mcgrath
b. ~1871
Source father
● Household
· direct · ~0.92
Father
James Mcgrath
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Margaret Mcgrath
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Mary Mcgrath
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mcgrath
Son · 1930 · age 26 · b. ~1904 · Pennsylvania
★ You are viewing this record
Sibling
Thos Mcgrath
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wm Mcgrath
Sibling · 1930 · age 20
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 — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
44 people indexed on this census page (ia:1930:fifteenthcensus00reel2095:0907)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wm Barrett | 48 | Head | Laborer | South Carolina |
| 2 | Lillian Barrett | 33 | Wife | — | Virginia |
| 3 | Wm Barrett | 8 | Son | — | Pennsylvania |
| 4 | Bertha Barrett | 11 | Daughter | — | Pennsylvania |
| 5 | Mary Mcgrath | 51 | Head | Cleaner | Pennsylvania |
| 6 | John Mcgrath THIS PERSON | 26 | Son | Chauffeur | Pennsylvania |
| 7 | Wm Mcgrath | 20 | Son | Chauffeur | Pennsylvania |
| 8 | Thos Mcgrath | 11 | Son | — | Pennsylvania |
| 9 | Chas O'Neil | 42 | Brother | Laborer | Pennsylvania |
| 10 | Catherine Mcdevitt | 60 | Lodger | Housework | New York State |
| 11 | Margaret Sharkey | 58 | Head | — | Northern Ireland |
| 12 | Anna Sharkey | 28 | Daughter | Typist | Pennsylvania |
| 13 | Edward Sharkey | 26 | Son | Helper | Pennsylvania |
| 14 | James Sharkey | 24 | Son | Chauffeur | Pennsylvania |
| 15 | James Mckee | 32 | Head | Stereotyper | Pennsylvania |
| 16 | Winifred Mckee | 29 | Wife | — | Pennsylvania |
| 17 | Ellen Mckee | 9 | Daughter | — | Pennsylvania |
| 18 | John Mckee | 6 | Son | — | Pennsylvania |
| 19 | James Mckee | 4 | Son | — | Pennsylvania |
| 20 | Margaret Mckee | 2 | Daughter | — | Pennsylvania |
| 21 | Velma Mckee | 0 | Daughter | — | Pennsylvania |
| 22 | James Clarke | 45 | Head | Chauffeur | Pennsylvania |
| 23 | Lillian Clarke | 39 | Wife | — | Virginia |
| 25 | James Stinson | 75 | Head | Teamster | Pennsylvania |
| 26 | Elizabeth Stinson | 76 | Wife | — | Pennsylvania |
| 27 | Albert Bright | 49 | Head | Orderly | Pennsylvania |
| 28 | Catherine Bright | 10 | Daughter | — | Pennsylvania |
| 29 | Mary Bright | 8 | Daughter | — | Pennsylvania |
| 30 | Albert Bright | 11 | Son | — | Pennsylvania |
| 31 | Chas Bright | 7 | Son | — | Pennsylvania |
| 32 | Edward Downs | 18 | Step-son | — | Pennsylvania |
| 33 | Ella Dalline | 50 | Head | — | Irish Free State |
| 34 | Margaret Dalline | 27 | Daughter | Examiner | Pennsylvania |
| 35 | Helen Dalline | 16 | Daughter | — | Pennsylvania |
| 36 | Richard Dalline | 14 | Son | — | Pennsylvania |
| 37 | Anna Dalline | 12 | Daughter | — | Pennsylvania |
| 38 | Catherine Almeda | 40 | Head | Cleaner | Pennsylvania |
| 39 | Mary Almeda | 14 | Daughter | — | Pennsylvania |
| 40 | Robert Almeda | 12 | Son | — | Pennsylvania |
| 41 | Joseph Almeda | 10 | Son | — | Pennsylvania |
| 42 | Dorothy Almeda | 5 | Daughter | — | Pennsylvania |
| 43 | Michael Higgins | 84 | Father | — | Pennsylvania |
| 44 | Rose Ryan | 74 | Head | — | Pennsylvania |
| 45 | Catherine Plummer | 24 | Grd-daughter | — | Pennsylvania |
Pedigree Summary
John + 2 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)