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Mary Leary — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Marion, Oregon
Our Model Tree links this Mary Leary across the 1920 and 1930 US Censuses in Marion, Oregon (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 10-person household.
Age 17
b. ~1913
Female
Daughter
Born: Oregon
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Marion, Oregon |
| Surname | Leary |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Oregon |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Township / Ward | Butteville Precinct |
| Est. Birth Year | ~1913 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Leary | Son | — | 10 | ~1920 |
| Luke Leary | Son | — | 12 | ~1918 |
| John Leary | Son | — | 14 | ~1916 |
| Eugene Leary | Son | — | 3 | ~1927 |
| Matthew Leary | Son | — | 19 | ~1911 |
| Mary Leary | Daughter | — | 17 | ~1913 |
| Leonard Leary | Son | — | 7 | ~1923 |
| Andrew Leary | Son | — | 2 | ~1928 |
| Ella Leary | Spouse | — | 43 | ~1887 |
| Madreline Leary | Daughter | — | 5 | ~1925 |
Census Appearances
1920
Marion, Oregon
Other, age 7
Marion, Oregon · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leary |
| Given Name | Mary |
| Relationship to Head | Niece |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Oregon |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1930
Marion, Oregon
Daughter, age 17
Marion, Oregon · implied b. ~1913 — 10 household members
| Surname | Leary |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Oregon |
| Can Read/Write | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
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 Leary across 2 US Census years (1920 and 1930) in Marion, Oregon, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Leary
Daughter · 1930 · age 17 · b. ~1913 · Oregon
★ You are viewing this record
Sibling
Eugene Leary
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madreline Leary
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrew Leary
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Leary
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Leary
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Luke Leary
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Leary
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Matthew Leary
Sibling · 1930 · age 19
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 — Marion, Oregon
Open full size
1930 US Federal Census — Marion, Oregon
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1947unit:0662)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ella Leary | 43 | Wife | — | Oregon |
| 52 | Matthew Leary | 19 | Son | Laborer | Oregon |
| 53 | Mary Leary THIS PERSON | 17 | Daughter | — | Oregon |
| 54 | John Leary | 14 | Son | — | Oregon |
| 55 | Luke Leary | 12 | Son | — | Oregon |
| 56 | James Leary | 10 | Son | — | Oregon |
| 57 | Leonard Leary | 7 | Son | — | Oregon |
| 58 | Madreline Leary | 5 | Daughter | — | Oregon |
| 59 | Eugene Leary | 3 | Son | — | Oregon |
| 60 | Andrew Leary | 2 | Son | — | Oregon |
| 61 | Sam Moy | 63 | Head | Farmer | China |
| 62 | Jim Perry | 60 | Head | Farmer | Ireland |
| 63 | Barry M. Monfreda | 24 | Boarder | Laborer | Philippine Islands |
| 64 | Monfreda | 21 | Boarder | Laborer | Philippine Islands |
| 65 | Jose B. Casiano | 21 | Boarder | Laborer | Philippine Islands |
| 66 | David F. Palmique | 23 | Boarder | Laborer | Philippine Islands |
| 67 | Dewey Smith | 29 | Head | Farmer | California |
| 68 | Helen Smith | 31 | Wife | — | Oregon |
| 69 | Vern Nelson | 39 | Head | Service Mechanic | Nebraska |
| 70 | Clara Nelson | 37 | Wife | — | Colorado |
| 71 | Eugene Nelson | 17 | Son | Service Mechanic | Oregon |
| 72 | Evelyn Nelson | 15 | Daughter | — | Oregon |
| 73 | Dorothy Nelson | 13 | Daughter | — | Oregon |
| 74 | Albert Mixed | 65 | Head | Laborer | Oregon |
| 75 | Alice Mixed | 44 | Wife | — | North Dakota |
| 76 | Lee Ng | 55 | Head | Farmer | Oregon |
| 77 | William Orcutt | 52 | Head | Laborer | Iowa |
| 78 | John G. Freeman | 63 | Head | Farmer | Sweden |
| 79 | Hannah Freeman | 52 | Wife | — | Oregon |
| 80 | Edward Freeman | 22 | Son | Laborer | Oregon |
| 81 | Charles Freeman | 16 | Son | — | Oregon |
| 82 | Elizabeth Johnson | 57 | H | — | Illinois |
| 83 | Charles Johnson | 27 | Son | Farmer | Nebraska |
| 84 | Ivan T. Johnson | 44 | Head | Miller | Wisconsin |
| 85 | Susan H. Johnson | 37 | Sister | — | Oregon |
| 86 | Robert E. Donahue | 58 | Head | Farmer | Iowa |
| 87 | Emma J. Donahue | 56 | Wife | — | Illinois |
| 88 | John E. Hill | 51 | Head | Farmer | Missouri |
| 89 | Lucile Hill | 12 | Daughter | — | Oregon |
| 90 | Peter Mailhot | 44 | Head | Farmer | Oregon |
| 91 | Evelyn Mailhot | 43 | Wife | — | Oregon |
| 92 | Earl Mailhot | 20 | Son | Laborer | Oregon |
| 93 | Francis Mailhot | 12 | Son | — | Oregon |
| 94 | Vernon Smith | 27 | Nephew | Laborer | Oregon |
| 95 | Alma Campbell | 60 | H | — | Germany |
| 96 | William Campbell | 29 | Son | Farmer | Wisconsin |
| 97 | William Campbell | 69 | Brother in law | Laborer | Wisconsin |
| 98 | Oscar Linguist | 42 | Boarder | Lineman | Michigan |
| 99 | August J. Sennely | 74 | Head | — | Wisconsin |
| 100 | Bertha Sennely | 58 | Wife | — | Oregon |
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)