MJ
Margaret Johnston — 1930 US Census Record
Model Tree available1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Margaret Johnston across the 1910, 1920 and 1930 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed), with identified parents Charles & Charles — first a daughter (b.~1905), then head of a 4-person household.
Age 25
b. ~1905
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Johnston |
| Given Name | Margaret A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1905 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Emma Johnston | Other | — | 54 | ~1876 |
| Margaret Johnston | Daughter | — | 25 | ~1905 |
| Edwin Johnston | Son | — | 28 | ~1902 |
| Charles Johnston | Head | — | 64 | ~1866 |
Census Appearances
1910
Allegheny, Pennsylvania
Daughter, age 4
Allegheny, Pennsylvania · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Scot Scotch |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Daughter, age 14
Allegheny, Pennsylvania · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Margaret A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 25
Allegheny, Pennsylvania · implied b. ~1905 — 4 household members
| Surname | Johnston |
| Given Name | Margaret A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| 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 Margaret Johnston across 3 US Census years (1910, 1920 and 1930) in Allegheny, Pennsylvania, using XGBoost record linkage. Identified parents: father Charles Johnston (~0.92 confidence) and father Charles Johnston (~0.92 confidence) and mother Emma Johnston (~0.92 confidence) and father George Johnston (~0.92 confidence) and mother Mavis Johnston (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Johnston
b. ~1866
Source father
● Household
· direct · ~0.92
Father
Charles Johnston
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Emma Johnston
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
George Johnston
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mavis Johnston
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Johnston
Daughter · 1930 · age 25 · b. ~1905 · Pennsylvania
★ You are viewing this record
Sibling
Edwin Johnston
Sibling · 1930 · age 28
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 — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
48 people indexed on this census page (ia:1930:fifteenthcensus00reel1975:0533)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John A Schmitt | 28 | Head | Clerk File | Pennsylvania |
| 2 | Mary Schmitt | 22 | Wife-H | — | Pennsylvania |
| 3 | Mary C. Schmitt | 5 | Daughter | — | Pennsylvania |
| 4 | George A Dasdorf | 23 | Head | Truck Driver | Pennsylvania |
| 5 | Rose Dasdorf | 21 | Wife-H | — | Pennsylvania |
| 6 | George Jr Dasdorf | 1 | Son | — | Pennsylvania |
| 7 | Patrick Clunan | 58 | Head | Insurance Agent | Pennsylvania |
| 8 | Ella M Clunan | 52 | Wife-H | — | Pennsylvania |
| 9 | Maria Farmtat | 56 | Boarder | Forelady | Pennsylvania |
| 10 | Fredrick W. Tepper | 54 | Head | Postal Clerk | Pennsylvania |
| 11 | Anna M Tepper | 54 | Wife-H | — | Pennsylvania |
| 12 | William W Austin | 50 | Head | Engineer | Massachusetts |
| 13 | Edna H Austin | 51 | Wife-H | — | Massachusetts |
| 14 | Elizabeth B Austin | 19 | Daughter | — | Pennsylvania |
| 15 | Annie S Johnson | 73 | Mother-law | — | Massachusetts |
| 16 | Chester J Morgan | 40 | Head | Plumber | Pennsylvania |
| 17 | Floretta Morgan | 37 | Wife-H | — | Pennsylvania |
| 18 | Richard Morgan | 12 | Son | — | Pennsylvania |
| 19 | Floretta Morgan | 9 | Daughter | — | Pennsylvania |
| 20 | Marjorie Morgan | 4 | Daughter | — | Pennsylvania |
| 21 | Chester Jr Morgan | 1 | Son | — | Pennsylvania |
| 22 | Charles Johnston | 64 | Head | House Manager | Pennsylvania |
| 23 | Emma C Johnston | 54 | Wife-H | — | Pennsylvania |
| 24 | Edwin Johnston | 28 | Son | Manager Asst | Pennsylvania |
| 25 | Margaret A Johnston THIS PERSON | 25 | Daughter | — | Pennsylvania |
| 26 | Theresia Mcmorrow | 49 | Head | — | Pennsylvania |
| 27 | Frank P Wait | 20 | Son | Stock Boy | Pennsylvania |
| 28 | Harold Priestley | 23 | Head | Electrician | Pennsylvania |
| 29 | Elizabeth Priestley | 23 | Wife-H | — | Pennsylvania |
| 30 | Michael J. Shea | 51 | Head | Motorman | Pennsylvania |
| 31 | Mary E Shea | 41 | Wife-H | — | Pennsylvania |
| 32 | Gertrude Shea | 22 | Daughter | Bookkeeper | Pennsylvania |
| 33 | Clare Shea | 20 | Daughter | File Clerk | Pennsylvania |
| 34 | Mary E Shea | 16 | Daughter | — | Pennsylvania |
| 35 | John Boyle | 27 | Son-law | Painter | Pennsylvania |
| 36 | Bertha Boyle | 25 | Daughter | — | Pennsylvania |
| 37 | Joan J Boyle | 1 | Granddaughter | — | Pennsylvania |
| 38 | Margaret Wilsh | 50 | Head | — | Pennsylvania |
| 39 | John A Kennelly | 50 | Head | Building- | Pennsylvania |
| 40 | Mary Kennelly | 52 | Sister-H | — | Pennsylvania |
| 41 | Martin Kennelly | 40 | Brother-H | Laborer | Pennsylvania |
| 42 | Pat Kennelly | 36 | Brother-H | Police Man | Pennsylvania |
| 43 | William Kennelly | 58 | Brother | — | Pennsylvania |
| 44 | Daniel E Lehane | 45 | Head | Stationary Engineer | Tennessee |
| 45 | Margaret Lehane | 44 | Wife-H | — | Pennsylvania |
| 46 | Lawrence Lehane | 19 | Son | Messenger | Pennsylvania |
| 47 | Daniel E Jr Lehane | 18 | Son | — | Pennsylvania |
| 48 | William Lehane | 13 | Son | — | Pennsylvania |
Pedigree Summary
Margaret + 1 sibling
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)