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Mary Lennon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Mary Lennon across the 1920 and 1930 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 7-person household.
Age 18
b. ~1912
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Lennon |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| 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 City |
| Est. Birth Year | ~1912 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edward Lennon | Head | — | 43 | ~1887 |
| Mary Lennon | Daughter | — | 18 | ~1912 |
| James Lennon | Son | — | 12 | ~1918 |
| Katherine Lennon | Other | — | 40 | ~1890 |
| Edward Lennon | Son | — | 19 | ~1911 |
| Margaret Lennon | Daughter | — | 15 | ~1915 |
| Rita Lennon | Daughter | — | 5 | ~1925 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 8
Allegheny, Pennsylvania · implied b. ~1912 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 18
Allegheny, Pennsylvania · implied b. ~1912 — 7 household members
| Surname | Lennon |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| 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 Mary Lennon across 2 US Census years (1920 and 1930) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lennon
Daughter · 1930 · age 18 · b. ~1912 · Pennsylvania
★ You are viewing this record
Sibling
Rita Lennon
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lennon
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Lennon
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Lennon
Sibling · 1930 · age 15
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
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1982:0104)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Theodore Charwick | 25 | Head | Clerk | Pennsylvania |
| 2 | Kathryn Charwick | 26 | Wife-H | Waitress | Lithuania |
| 3 | Anna E. Janusk | 31 | Sister | Waitress | Lithuania |
| 4 | — | None | — | — | — |
| 5 | John P. Eichhorn | 47 | Head | Clerk | Pennsylvania |
| 6 | Philhelmina Eichhorn | 45 | Wife-H | — | Pennsylvania |
| 7 | Charles J. Eichhorn | 22 | Son | Clerk | Pennsylvania |
| 8 | Kathryn A. Eichhorn | 18 | Daughter | Stenographer | Pennsylvania |
| 9 | Joseph H. Kohler | 55 | Head | Layerout | Pennsylvania |
| 10 | Mary Kohler | 51 | Wife-H | — | Pennsylvania |
| 11 | Joseph Kohler | 23 | Son | Clerk | Pennsylvania |
| 12 | John F. Kohler | 19 | Son | Clerk | Pennsylvania |
| 13 | John Provost | 47 | Head | Machinist | Scotland |
| 14 | Mary H. Provost | 43 | Wife-H | — | Scotland |
| 15 | Andrew R. Provost | 22 | Son | Clerk | Scotland |
| 16 | Margaret R. Provost | 15 | Daughter | — | Pennsylvania |
| 17 | Robert Provost | 13 | Son | — | Pennsylvania |
| 18 | John Jr. Provost | 10 | Son | — | Pennsylvania |
| 19 | William Provost | 7 | Son | — | Pennsylvania |
| 20 | Reed L. Selfridge | 68 | Head | Pharmacist | Massachusetts |
| 21 | Eleanora Selfridge | 54 | Wife-H | — | Ohio |
| 22 | Lydia Gallaher | 42 | Head | — | Pennsylvania |
| 23 | Elizabeth M. Gallaher | 17 | Daughter | Stenographer | Pennsylvania |
| 24 | John Gallaher | 14 | Son | — | Pennsylvania |
| 25 | Fred L. Gebhardt | 40 | Head | Salesman | Pennsylvania |
| 26 | Margaret J. Gebhardt | 44 | Wife-H | — | Pennsylvania |
| 27 | Ivy G. Gebhardt | 5 | Daughter | — | Pennsylvania |
| 28 | Frank E. Hodgson | 32 | Head | Conductor | Massachusetts |
| 29 | Agnes M. Hodgson | 26 | Wife-H | — | Pennsylvania |
| 30 | Betty A. Hodgson | 1 | Daughter | — | Pennsylvania |
| 31 | Edward J. Lennon | 43 | Head | Fireman | Pennsylvania |
| 32 | Katherine E. Lennon | 40 | Wife-H | — | Pennsylvania |
| 33 | Edward J. Jr. Lennon | 19 | Son | Laborer | Pennsylvania |
| 34 | Mary A. Lennon THIS PERSON | 18 | Daughter | — | Pennsylvania |
| 35 | Margaret M. Lennon | 15 | Daughter | — | Pennsylvania |
| 36 | James P. Lennon | 12 | Son | — | Pennsylvania |
| 37 | Rita E. Lennon | 5 | Daughter | — | Pennsylvania |
| 38 | Edward J. Vorndran | 41 | Head | Clerk | Pennsylvania |
| 39 | Margaret Vorndran | 37 | Wife-H | — | Pennsylvania |
| 40 | Edward J. Jr. Vorndran | 16 | Son | — | Pennsylvania |
| 41 | Margaret E. Vorndran | 13 | Daughter | — | Pennsylvania |
| 42 | Richard D. Vorndran | 11 | Son | — | Pennsylvania |
| 43 | Robert Goldatz | 40 | Head | Dining Room Mgr. | Ohio |
| 44 | Josephine Goldatz | 30 | Wife-H | — | Austria |
| 45 | Virginia R. Goldatz | 10 | Daughter | — | Ohio |
| 46 | Mary G. Goldatz | 9 | Daughter | — | Ohio |
| 47 | Dorothy M. Goldatz | 6 | Daughter | — | Ohio |
| 48 | Isaac A. Otella | 41 | Head | Stationary Engr. | Pennsylvania |
| 49 | Mary F. Otella | 47 | Wife-H | — | Scotland |
| 50 | Stewart R. Otella | 18 | Son | Clerk | Pennsylvania |
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)