MJ
Mary Johnson — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Mary Johnson across the 1900, 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1849), then head of a 6-person household.
Age 51
b. ~1849
Female
Head
Born: Ireland
Widowed
1900 Census Record Details
| Census Year | 1900 |
| Location | Philadelphia, Pennsylvania |
| Surname | Johnson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Birth Year | 1849 |
| Year of Immigration | 1870 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1849 |
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 1900 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Johnson | Head | — | 51 | ~1849 |
| Eugene Tierney | Other | — | 45 | ~1855 |
| Florence Tierney | Other | — | 27 | ~1873 |
| John Johnson | Son | — | 12 | ~1888 |
| Herbert Johnson | Son | — | 14 | ~1886 |
| James Johnson | Son | — | 10 | ~1890 |
Census Appearances
1900
Philadelphia, Pennsylvania
Head, age 51
Philadelphia, Pennsylvania · implied b. ~1849 — 6 household members
| Surname | Johnson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Birth Year | 1849 |
| Year of Immigration | 1870 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
Head, age 59
Philadelphia, Pennsylvania · implied b. ~1851 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Maria R. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Children Born | 10 |
| Children Living | 9 |
| Year of Immigration | 1863 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Philadelphia, Pennsylvania
Head, age 70
Philadelphia, Pennsylvania · implied b. ~1850 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1863 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Dining Room |
| Industry | Rags |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Year of Naturalization | 1880 |
| 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 Mary Johnson across 3 US Census years (1900, 1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Johnson
Head · 1900 · age 51 · b. ~1849 · 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:1900:12thcensusofpopu1473unit:0308)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Florence Ellis | 27 | Daughter | Winder (Yarns) | England |
| 52 | Thomas Ulmer | 48 | Head | Foreman (Cotton) | England |
| 53 | Annie Ulmer | 48 | Wife | — | England |
| 54 | John Ulmer | 19 | Son | Soldier (U.S.) | Penna |
| 55 | Anna Ulmer | 13 | Daughter | At School | Penna |
| 56 | Thomas Jr. Ulmer | 9 | Son | At School | Penna |
| 57 | Catherine Ulmer | 67 | Boarder | — | Ireland |
| 58 | Mary Riley | 39 | Boarder | Cotton Mill | Ireland |
| 59 | Mary Johnson THIS PERSON | 50 | Head | — | Ireland |
| 60 | Herbert Johnson | 13 | Son | Dyer | Penna |
| 61 | John Johnson | 11 | Son | Laborer (Brewery) | Penna |
| 62 | James Johnson | 9 | Son | Laborer (Foundry) | Penna |
| 63 | Eugene Tierney | 45 | Sister | Cotton Mill | Ireland |
| 64 | Florence Tierney | 27 | Niece | Finisher (Cloth) | Penna |
| 65 | John Fry | 38 | Head | Finisher (Table Cloth) | Penna |
| 66 | John Fry | 17 | Son | Presser (Cloth) | Penna |
| 67 | Katie Fry | 15 | Daughter | Topper (Hosiery) | Penna |
| 68 | Alice Fry | 13 | Daughter | Folder (Towels) | Penna |
| 69 | Mary Fry | 8 | Daughter | At School | Penna |
| 70 | Annie Fry | 6 | Daughter | — | Penna |
| 71 | George Snyder | 74 | Boarder | Winder (Cakes) | Penna |
| 72 | Anna Snyder | 6 | Boarder | — | Penna |
| 73 | Mary Eaton | 77 | Head | Drawer (Carpet) | Penna |
| 74 | Patrick Owens | 29 | Head | Laborer (Ship Yard) | England |
| 75 | Ella Owens | 27 | Wife | — | Penna |
| 76 | Louis Owens | 5 | Son | — | Penna |
| 77 | Joseph Oat | 32 | Head | — | Penna |
| 78 | Mary Oat | 29 | Wife | — | Penna |
| 79 | William Oat | 11 | Son | — | Penna |
| 80 | William Johnson | 50 | Boarder | — | Penna |
| 81 | William Dent | 32 | Head | Buckster | Penna |
| 82 | Anna B. Dent | 23 | Wife | — | Penna |
| 83 | Annie Dent | 2 | Daughter | — | Penna |
| 84 | Christopher Newell | 25 | Head | Weaver (Carpet) | Penna |
| 85 | Maggie Newell | 29 | Wife | — | Penna |
| 86 | John Newell | 1 | Son | — | Penna |
| 87 | Henry Collins | 51 | Head | Chipping (Foundry) | Penna |
| 88 | Mary J. Collins | 45 | Wife | — | Penna |
| 89 | Sarah Collins | 28 | Daughter | — | Penna |
| 90 | Clara Collins | 23 | Daughter | Spooling (Cotton Mill) | Penna |
| 91 | Henry Collins | 19 | Son | Packer (Machinist) | Penna |
| 92 | William Donovan | 32 | Head | Engine Driver | Delaware |
| 93 | Maggie Donovan | 31 | Wife | — | Penna |
| 94 | Harry Donovan | 4 | Son | — | Penna |
| 95 | Mary P. Donovan | 54 | Mother | Shirt Maker | Delaware |
| 96 | William T. Nolan | 23 | Head | Driver (Dye Wagon) | Penna |
| 97 | Mary A. Nolan | 23 | Wife | — | England |
| 98 | Gertrude Nolan | 1 | Daughter | — | Penna |
| 99 | Mary E. Cunningham | 53 | Mother-in-law | — | Ireland |
| 100 | James Cunningham | 33 | Boarder | Ruler (Sugar) | Ireland |
Related Census Records
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)