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Mary Mahoney — 1920 US Census Record
Model Tree available1920 United States Federal Census · Lehigh, Pennsylvania
Our Model Tree links this Mary Mahoney across the 1920, 1930 and 1940 US Censuses in Lehigh, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Sylvester — first a daughter (b.~1895), then head of a 8-person household.
Age 25
b. ~1895
Female
Daughter
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Lehigh, Pennsylvania |
| Surname | Mahoney |
| Given Name | Mary |
| 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 | |
| Occupation | Clerk |
| Industry | Bell Tel Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Allentown |
| Est. Birth Year | ~1895 |
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.
8 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mahoney | Daughter | — | 25 | ~1895 |
| Helen Mahoney | Daughter | — | 20 | ~1900 |
| Elizabeth Mahoney | Daughter | — | 14 | ~1906 |
| John Mahoney | Head | — | 52 | ~1868 |
| Mary Henley | Other | — | 75 | ~1845 |
| William Mahoney | Son | — | 15 | ~1905 |
| Thomas Mahoney | Son | — | 11 | ~1909 |
| Annie Mahoney | Spouse | — | 52 | ~1868 |
Census Appearances
1920
Lehigh, Pennsylvania
Daughter, age 25
Lehigh, Pennsylvania · implied b. ~1895 — 8 household members
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Clerk |
| Industry | Bell Tel Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 37
Allegheny, Pennsylvania · implied b. ~1893 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Marie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 46
Allegheny-County, Pennsylvania · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Marie C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Bookkeeper |
| Industry | Automobile |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| 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 Mahoney across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father John Mahoney (~0.92 confidence) and father Sylvester Mahoney (~0.92 confidence) and mother Annie Mahoney (~0.92 confidence) and father John Mahoney (~0.92 confidence) and mother Mary Mahoney (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mahoney
b. ~1860
Source father
● Household
· direct · ~0.92
Father
Sylvester Mahoney
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Annie Mahoney
b. ~1868
Source mother
● Household
· direct · ~0.92
Father
John Mahoney
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Mary Mahoney
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Mahoney
Daughter · 1920 · age 25 · b. ~1895 · Pennsylvania
★ You are viewing this record
Sibling
Elizabeth Mahoney
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mahoney
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mahoney
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mahoney
Sibling · 1920 · age 20
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
1920 US Federal Census — Lehigh, Pennsylvania
Open full size
1920 US Federal Census — Lehigh, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1589unit:0201)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John E. Mahoney | 52 | Head | Yard Master | Pennsylvania |
| 2 | Annie E. Mahoney | 52 | Wife | — | Pennsylvania |
| 3 | Mary Mahoney THIS PERSON | 25 | Daughter | Clerk | Pennsylvania |
| 4 | Helen Mahoney | 20 | Daughter | Tel Operator | Pennsylvania |
| 5 | William Mahoney | 15 | Son | — | Pennsylvania |
| 6 | Elizabeth Mahoney | 14 | Daughter | — | Pennsylvania |
| 7 | Thomas Mahoney | 11 | Son | — | Pennsylvania |
| 8 | Mary Henley | 75 | Mother-in-law | — | Ireland |
| 9 | Amandus Hoffman | 54 | Head | Repairer | Pennsylvania |
| 10 | Sallie Hoffman | 49 | Wife | — | Pennsylvania |
| 11 | Melvin Hoffman | 22 | Head | Baker | Pennsylvania |
| 12 | Mary Hoffman | 20 | Wife | — | Pennsylvania |
| 13 | Ralph Hoffman | 1 | Son | — | Pennsylvania |
| 14 | Harvey Hartman | 48 | Head | Machinist | Pennsylvania |
| 15 | Catherine Hartman | 47 | Wife | — | Pennsylvania |
| 16 | Henry Hartman | 20 | Son | Musician | Pennsylvania |
| 17 | Jonas Hartman | 19 | Son | Shuttle Maker | Pennsylvania |
| 18 | Minnie Hartman | 16 | Daughter | Cigar Maker | Pennsylvania |
| 19 | Leo Hartman | 14 | Son | Silk Worker | Pennsylvania |
| 20 | Anna Hartman | 72 | Mother | — | Pennsylvania |
| 21 | Theresa Hofstetter | 19 | Boarder | Silk Worker | Pennsylvania |
| 22 | Alfred Wagoner | 74 | Boarder | Teamster | Pennsylvania |
| 23 | William Hah | 30 | Head | Plumber | Pennsylvania |
| 24 | Dorothy Hah | 28 | Wife | — | Pennsylvania |
| 25 | Linus Hah | 4 | Son | — | Pennsylvania |
| 26 | Vincent Hah | 1 | Son | — | Pennsylvania |
| 27 | Andrew F. Lipovsky | 30 | Head | Silk Worker | Austria |
| 28 | Mary C. Lipovsky | 29 | Wife | — | Pennsylvania |
| 29 | Joseph Lipovsky | 6 | Son | — | Pennsylvania |
| 30 | Charles Bernhardt | 40 | Head | Foreman | Pennsylvania |
| 31 | Emma Bernhardt | 40 | Wife | — | Pennsylvania |
| 32 | Russell Bernhardt | 18 | Son | Silk Worker | Pennsylvania |
| 33 | Paul Bernhardt | 17 | Son | Silk Worker | Pennsylvania |
| 34 | Mildred Bernhardt | 9 | Daughter | — | Pennsylvania |
| 35 | Dorothy Bernhardt | 6 | Daughter | — | Pennsylvania |
| 36 | Catherine Bernhardt | 2 | Daughter | — | Pennsylvania |
| 37 | Albert Bernhardt | 21 | Head | Inspector | Pennsylvania |
| 38 | Mamie Bernhardt | 17 | Wife | — | Pennsylvania |
| 39 | Jacob Bernhardt | 65 | Father | Furniture Maker | Pennsylvania |
| 40 | Mary Satz | 51 | Head | House Work | Austria |
| 41 | John Satz | 25 | Son | Chauffeur | Pennsylvania |
| 42 | Michael Satz | 24 | Son | Finisher | Pennsylvania |
| 43 | Andrew Satz | 19 | Son | Chauffeur | Pennsylvania |
| 44 | Anthony Song | 69 | Head | Lather | Germany |
| 45 | Anna J. Song | 57 | Wife | — | Pennsylvania |
| 46 | Martha Song | 15 | Daughter | Stenographer | Pennsylvania |
| 47 | Samuel J. Chubbuck | 26 | Head | Bookkeeper | Pennsylvania |
| 48 | Helen G. Chubbuck | 23 | Wife | — | Pennsylvania |
| 49 | Frank J. Song | 31 | Son-in-law | Finisher | Pennsylvania |
| 50 | Helen A. Chubbuck | 0 | Daughter | — | Pennsylvania |
Pedigree Summary
Mary + 4 siblings
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 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)