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John Mcgrath — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this John Mcgrath across the 1900, 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1845), then head of a 7-person household.
Age 55
b. ~1845
Male
Head
Born: Ireland
Married
1900 Census Record Details
| Census Year | 1900 |
| Location | Philadelphia, Pennsylvania |
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Feb |
| Birth Year | 1845 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Contractor |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Contractor |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1845 |
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.
7 people recorded at the same address in the 1900 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Sarah Mcgrath | Daughter | — | 13 | ~1887 |
| Rose Mcgrath | Daughter | — | 11 | ~1889 |
| Annie Mcgrath | Daughter | — | 17 | ~1883 |
| Mary Mcgrath | Daughter | — | 15 | ~1885 |
| John Mcgrath | Head | — | 55 | ~1845 |
| John Mcgrath | Son | — | 19 | ~1881 |
| Annie Mcgrath | Spouse | — | 46 | ~1854 |
Census Appearances
1900
Philadelphia, Pennsylvania
Head, age 55
Philadelphia, Pennsylvania · implied b. ~1845 — 7 household members
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Feb |
| Birth Year | 1845 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Contractor |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Philadelphia, Pennsylvania
Other, age 64
Philadelphia, Pennsylvania · implied b. ~1846 — 49 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Inmate |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 30 |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Philadelphia, Pennsylvania
Other, age 74
Philadelphia, Pennsylvania · implied b. ~1846 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 74 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1862 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Contractor |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Year of Naturalization | 1875 |
| 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 (1900, 1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
John Mcgrath
Head · 1900 · age 55 · b. ~1845 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1900 US Federal Census — Philadelphia, Pennsylvania
Open full size
1900 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1900:12thcensusofpopu1476unit:0462)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Lobeck | 28 | Head | Clerk | Germany |
| 2 | Mary Lobeck | 24 | Wife | — | Pennsylvania |
| 3 | William Lippincott | 34 | Head | Supt | Pennsylvania |
| 4 | Mary Lippincott | 33 | Wife | — | Ireland |
| 5 | William Lippincott | 7 | Son | — | Pennsylvania |
| 6 | Mary Lippincott | 3 | Daughter | — | Pennsylvania |
| 7 | Helen Lippincott | 0 | Daughter | — | Pennsylvania |
| 8 | Alice Mcgrath | 27 | Servant | Servant | Ireland |
| 9 | Mary Mcgrath | 26 | Servant | Servant | Ireland |
| 10 | Annie Mcgrath | 24 | Servant | Servant | Ireland |
| 11 | Bridget Mcgrath | 21 | Servant | Servant | Ireland |
| 12 | Julia Mcgrath | 19 | Servant | Servant | Ireland |
| 13 | Sarah Mcgrath | 17 | Servant | Servant | Ireland |
| 14 | Rose Mcgrath | 15 | Servant | Servant | Ireland |
| 15 | Margaret Mcgrath | 14 | Servant | Servant | Ireland |
| 16 | Mary Mcgrath | 42 | Head | Physician | Pennsylvania |
| 17 | Mary Mcgrath | 33 | Daughter | — | Pennsylvania |
| 18 | John Mcgrath THIS PERSON | 55 | Head | Contractor | Ireland |
| 19 | Annie Mcgrath | 45 | Wife | — | Pennsylvania |
| 20 | John Mcgrath | 18 | Son | At School | Pennsylvania |
| 21 | Annie Mcgrath | 17 | Daughter | — | Pennsylvania |
| 22 | Mary Mcgrath | 15 | Daughter | — | Pennsylvania |
| 23 | Sarah Mcgrath | 12 | Daughter | — | Pennsylvania |
| 24 | Rose Mcgrath | 10 | Daughter | — | Pennsylvania |
| 25 | James Vellon | 42 | Head | Salesman | Delaware |
| 26 | Annie Vellon | 40 | Wife | — | Pennsylvania |
| 27 | James Vellon | 19 | Son | Civil Engineer | Pennsylvania |
| 28 | William Marshall | 42 | Head | Druggist | Pennsylvania |
| 29 | Annie Marshall | 39 | Wife | — | Pennsylvania |
| 30 | Annie Marshall | 26 | Servant | Cook | Ireland |
| 31 | Mary Marshall | 72 | Head | — | Pennsylvania |
| 32 | Sallie Marshall | 47 | Daughter | — | Pennsylvania |
| 33 | Albertine Marshall | 35 | Daughter | — | Pennsylvania |
| 34 | William Johnson | 40 | Head | Produce Merchant | Pennsylvania |
| 35 | Sarah Johnson | 37 | Wife | — | Pennsylvania |
| 36 | Sarah Johnson | 17 | Daughter | — | Pennsylvania |
| 37 | Addie Johnson | 14 | Daughter | — | Pennsylvania |
| 38 | Raymond Johnson | 13 | Son | At School | Pennsylvania |
| 39 | William Miller | 47 | Head | Agent | New York |
| 40 | Annie Miller | 41 | Wife | — | Pennsylvania |
| 41 | William Miller | 17 | Son | — | Pennsylvania |
| 42 | Annie Miller | 14 | Daughter | — | Pennsylvania |
| 43 | Raymond Miller | 13 | Son | — | Pennsylvania |
| 44 | Albert Miller | 10 | Son | — | Pennsylvania |
| 45 | Charles Miller | 18 | Nephew | Stenographer | Pennsylvania |
| 46 | Susan Walker | 40 | Servant | — | Pennsylvania |
| 47 | George Williams | 33 | Head | Inspector | New York |
| 48 | Jane Williams | 31 | Wife | — | Pennsylvania |
| 49 | Margaret Williams | 7 | Daughter | — | Pennsylvania |
| 50 | Jane Williams | 3 | Daughter | — | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1900 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)