JL
John Leonard — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this John Leonard across the 1900 and 1910 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1840), then head of a 12-person household.
Age 60
b. ~1840
Male
Head
Born: Ireland
Married
1900 Census Record Details
| Census Year | 1900 |
| Location | Philadelphia, Pennsylvania |
| Surname | Leonard |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Year | 1840 |
| Year of Immigration | 1860 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Laborer |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1840 |
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.
12 people recorded at the same address in the 1900 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Leonard | Daughter | — | 28 | ~1872 |
| Annie Leonard | Daughter | — | 26 | ~1874 |
| Elizabeth Leonard | Daughter | — | 16 | ~1884 |
| John Leonard | Head | — | 60 | ~1840 |
| Francis Leonard | Son | — | 20 | ~1880 |
| Charles Leonard | Son | — | 14 | ~1886 |
| William Leonard | Son | — | 22 | ~1878 |
| Edward Leonard | Son | — | 18 | ~1882 |
| Joseph Leonard | Son | — | 24 | ~1876 |
| John Leonard | Son | — | 30 | ~1870 |
| Kate Leonard | Spouse | — | 33 | ~1867 |
| Margaret Leonard | Spouse | — | 60 | ~1840 |
Census Appearances
1900
Philadelphia, Pennsylvania
Head, age 60
Philadelphia, Pennsylvania · implied b. ~1840 — 12 household members
| Surname | Leonard |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Year | 1840 |
| Year of Immigration | 1860 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Philadelphia, Pennsylvania
Other, age 75
Philadelphia, Pennsylvania · implied b. ~1835 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | John |
| Relationship to Head | Father-in-law |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1862 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| 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 Leonard across 2 US Census years (1900 and 1910) in Philadelphia, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
John Leonard
Head · 1900 · age 60 · b. ~1840 · Pennsylvania
★ You are viewing this record
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:1900:12thcensusofpopu1460unit:0134)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Bormann | 34 | Head | Stationer | Pennsylvania |
| 2 | Mary Bormann | 32 | Wife | — | Pennsylvania |
| 3 | Fred Bormann | 8 | Son | — | Pennsylvania |
| 4 | Kate Whittaker | 59 | Head | — | Pennsylvania |
| 5 | Annie Whittaker | 30 | Daughter | Dressmaker | Pennsylvania |
| 6 | Edward Whittaker | 28 | Son | Iron Moulder | Pennsylvania |
| 7 | Mary Whittaker | 27 | Daughter | Dressmaker | Pennsylvania |
| 8 | Joseph Whittaker | 25 | Son | Iron Moulder | Pennsylvania |
| 9 | Thomas Whittaker | 23 | Son | Iron Moulder | Pennsylvania |
| 10 | William Whittaker | 20 | Son | Iron Moulder | Pennsylvania |
| 11 | James Whittaker | 18 | Son | Clerk | Pennsylvania |
| 12 | Francis Whittaker | 16 | Son | Iron Moulder | Pennsylvania |
| 13 | John Whittaker | 14 | Son | — | Pennsylvania |
| 14 | Charles Whittaker | 12 | Son | — | Pennsylvania |
| 15 | Josephine Whittaker | 10 | Daughter | — | Pennsylvania |
| 16 | Florence Whittaker | 8 | Daughter | — | Pennsylvania |
| 17 | Gertrude Whittaker | 6 | Daughter | — | Pennsylvania |
| 18 | New York Whittaker | None | Boarder | Painter | New York |
| 19 | John Leonard THIS PERSON | 60 | Head | Laborer | Ireland |
| 20 | Margaret Leonard | 60 | Wife | — | Pennsylvania |
| 21 | John Leonard | 30 | Son | Butcher | Pennsylvania |
| 22 | Mary Leonard | 28 | Daughter | — | Pennsylvania |
| 23 | Annie Leonard | 26 | Daughter | — | Pennsylvania |
| 24 | Joseph Leonard | 24 | Son | Salesman | Pennsylvania |
| 25 | William Leonard | 22 | Son | — | Pennsylvania |
| 26 | Francis Leonard | 19 | Son | — | Pennsylvania |
| 27 | Edward Leonard | 17 | Son | Laborer | Pennsylvania |
| 28 | Elizabeth Leonard | 15 | Daughter | — | Pennsylvania |
| 29 | Charles Leonard | 13 | Son | — | Pennsylvania |
| 30 | Kate Leonard | 32 | Wife | — | Pennsylvania |
| 31 | Francis Leonard | 48 | Head | Marine Eng | New Jersey |
| 32 | Mary Leonard | 43 | Wife | — | New Jersey |
| 33 | Francis Leonard | 19 | Son | Marine Eng | Pennsylvania |
| 34 | William Leonard | 13 | Son | — | New Jersey |
| 35 | Ellsworth Leonard | 10 | Son | At School | Pennsylvania |
| 36 | Danielle Leonard | 7 | Daughter | — | Pennsylvania |
| 37 | Albert Lochner | 36 | Head | Shoemaker | Pennsylvania |
| 38 | Annie Lochner | 35 | Wife | — | Pennsylvania |
| 39 | Adam Lochner | 8 | Daughter | At School | Pennsylvania |
| 40 | Robert David | 37 | Boarder | — | Pennsylvania |
| 41 | Kate David | 27 | Boarder | Morocco Finisher | Pennsylvania |
| 42 | John Stock | 28 | Head | Boiler Maker | Pennsylvania |
| 43 | Mary Stock | 28 | Wife | — | Pennsylvania |
| 44 | Raymond Stock | 3 | Son | — | Pennsylvania |
| 45 | Sallie Stock | 17 | Boarder | Boiler Maker | Pennsylvania |
| 46 | Cecelia Hall | 52 | Head | — | Pennsylvania |
| 47 | Emily Hall | 36 | Sister | Shoe Packer | Pennsylvania |
| 48 | Edward Dehong | 22 | Step Son | Laborer | Pennsylvania |
| 49 | — | 56 | Head | P. Officer | Pennsylvania |
| 50 | Sarah | 54 | Wife | — | 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)