MJ
Mary Johnston — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Mary Johnston across the 1920, 1930 and 1940 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1876), then head of a 5-person household.
Age 44
b. ~1876
Female
Spouse
Born: Scotland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Philadelphia, Pennsylvania |
| Surname | Johnston |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Year of Naturalization | 1898 |
| Birthplace (normalized) | scotland |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1876 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Sarah Johnston | Daughter | — | 4 | ~1916 |
| Bertha Johnston | Daughter | — | 8 | ~1912 |
| Mary Johnston | Daughter | — | 16 | ~1904 |
| John Johnston | Head | — | 48 | ~1872 |
| Mary Johnston | Spouse | — | 44 | ~1876 |
Census Appearances
1920
Philadelphia, Pennsylvania
Spouse, age 44
Philadelphia, Pennsylvania · implied b. ~1876 — 5 household members
| Surname | Johnston |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Year of Naturalization | 1898 |
| Birthplace (normalized) | scotland |
1930
Delaware, Pennsylvania
Spouse, age 56
Delaware, Pennsylvania · implied b. ~1874 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1887 |
| Age at First Marriage | 25 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
Head, age 67
Delaware-County, Pennsylvania · implied b. ~1873 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Folcroft |
| 1935 Residence (County) | Delaware |
| Naturalization Status | Alien |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Johnston across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Johnston
Spouse · 1920 · age 44 · b. ~1876 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Philadelphia, Pennsylvania
Open full size
1920 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1617unit:0477)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Scovron | 31 | Head | Laborer | Austria |
| 2 | Emma Scovron | 24 | Wife | — | Austria |
| 3 | Edward Scovron | 7 | Son | — | Pennsylvania |
| 4 | George Scovron | 5 | Son | — | Pennsylvania |
| 5 | Catherine Scovron | 3 | Daughter | — | Pennsylvania |
| 6 | Anna Scovron | 1 | Daughter | — | Pennsylvania |
| 7 | John Johnston | 48 | Head | Rigger | Norway |
| 8 | Mary Johnston THIS PERSON | 44 | Wife | — | Scotland |
| 9 | Mary Johnston | 16 | Daughter | — | Pennsylvania |
| 10 | Bertha Johnston | 8 | Daughter | — | Pennsylvania |
| 11 | Sarah Johnston | 4 | Daughter | — | Pennsylvania |
| 12 | Michael Kelly | 70 | Head | — | Ireland |
| 13 | Catherine Kelly | 60 | Wife | — | Ireland |
| 14 | Regina Kelly | 21 | Daughter | Secretary | Pennsylvania |
| 15 | Harry Mason | 44 | Head | Iron Worker | Pennsylvania |
| 16 | Emma Mason | 42 | Wife | — | New York |
| 17 | Emma Mason | 14 | Daughter | — | Pennsylvania |
| 18 | Albert Mason | 11 | Son | — | Pennsylvania |
| 19 | Alice Mason | 11 | Daughter | — | Pennsylvania |
| 20 | Florence Mason | 5 | Daughter | — | Pennsylvania |
| 21 | Frank Bachman | 34 | Head | Crane Operator | Pennsylvania |
| 22 | Elizabeth Bachman | 33 | Wife | Rail Roller | Pennsylvania |
| 23 | Lawrence Bachman | 14 | Son | — | Pennsylvania |
| 24 | Brooks A. Bachman | 22 | Boarder | Reeler | Poland |
| 25 | Margaret Cassidy | 37 | Head | Twister | Pennsylvania |
| 26 | Mary Cassidy | 21 | Daughter | Reeler | Pennsylvania |
| 27 | Elizabeth Cassidy | 24 | Daughter | Stenographer | Pennsylvania |
| 28 | Mary Scanlon | 13 | Aunt | — | Pennsylvania |
| 29 | James Cardon | 45 | Head | Assistant Foreman | Pennsylvania |
| 30 | Florence Cardon | 46 | Wife | — | England |
| 31 | Anna Cardon | 22 | Daughter | Examiner | Pennsylvania |
| 32 | Hilda Cardon | 21 | Daughter | Spinner | Pennsylvania |
| 33 | Doris Cardon | 11 | Daughter | — | Pennsylvania |
| 34 | John Kelly | 35 | Head | Shipping Clerk | Pennsylvania |
| 35 | Isabella Kelly | 34 | Wife | — | Pennsylvania |
| 36 | Flora Kelly | 14 | Daughter | Shooter | Pennsylvania |
| 37 | William Kelly | 12 | Son | — | Pennsylvania |
| 38 | John Kelly | 5 | Son | — | Pennsylvania |
| 39 | Vincent Kelly | 1 | Son | — | Pennsylvania |
| 40 | Elizabeth Richmond | 45 | Head | — | Nova Scotia |
| 41 | Norman Richmond | 37 | Brother | Laborer | Nova Scotia |
| 42 | Grace Richmond | 30 | Sister | Stenographer | Nova Scotia |
| 43 | James J. Dugan | 44 | Head | Roofer | Pennsylvania |
| 44 | Catherine V. Dugan | 45 | Wife | — | Pennsylvania |
| 45 | Mary M. Dugan | 14 | Daughter | — | Pennsylvania |
| 46 | Catherine V. Dugan | 11 | Daughter | — | Pennsylvania |
| 47 | James E. Dugan | 10 | Son | — | Pennsylvania |
| 48 | Joseph A. Dugan | 7 | Son | — | Pennsylvania |
| 49 | Francis P. Dugan | 4 | Son | — | Pennsylvania |
| 50 | Louis J. Mcdevitt | 28 | Brother-in-law | — | Pennsylvania |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)