MC
Mary Crowley — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Mahoning, Ohio
Our Model Tree links this Mary Crowley across the 1920 and 1930 US Censuses in Mahoning, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 9-person household.
Age 20
b. ~1910
Female
Daughter
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Mahoning, Ohio |
| Surname | Crowley |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Occupation | Asst. Chief Clerk |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Asst. Chief Clerk |
| Township / Ward | Youngstown City |
| Est. Birth Year | ~1910 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Clyde Crowley | Son | — | 28 | ~1902 |
| Phyllis Crowley | Other | — | 84 | ~1846 |
| Phoebe Crowley | Daughter | — | 16 | ~1914 |
| Laura Crowley | Other | — | 55 | ~1875 |
| Leroy Crowley | Son | — | 14 | ~1916 |
| William Crowley | Head | — | 62 | ~1868 |
| Mary Crowley | Daughter | — | 20 | ~1910 |
| Paul Crowley | Son | — | 34 | ~1896 |
| Ruth Crowley | Daughter | — | 24 | ~1906 |
Census Appearances
1920
Mahoning, Ohio
Daughter, age 10
Mahoning, Ohio · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crowley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Mahoning, Ohio
Daughter, age 20
Mahoning, Ohio · implied b. ~1910 — 9 household members
| Surname | Crowley |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Asst. Chief Clerk |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Crowley across 2 US Census years (1920 and 1930) in Mahoning, Ohio, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Crowley
Daughter · 1930 · age 20 · b. ~1910 · Ohio
★ You are viewing this record
Sibling
Paul Crowley
Sibling · 1930 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clyde Crowley
Sibling · 1930 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phoebe Crowley
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Crowley
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leroy Crowley
Sibling · 1930 · age 14
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 — Mahoning, Ohio
Open full size
1930 US Federal Census — Mahoning, Ohio
Page Contents
47 people indexed on this census page (ia:1930:ohiocensus00reel1846:0642)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Delmar L. Gilbert | 59 | Head | Electrician | Ohio |
| 52 | Ella J. Gilbert | 60 | Wife-H | — | Ohio |
| 53 | Wesley C. Barnett | 34 | Son-in-law | Grinder Machine | Penn |
| 54 | Mary B. Barnett | 27 | Daughter | — | Ohio |
| 55 | W. Gilbert Barnett | 6 | Grandson | — | Ohio |
| 56 | William E. Barnett | 4 | Grandson | — | Ohio |
| 57 | Ella J. Barnett | 3 | Granddaughter | — | Ohio |
| 58 | Steve S. Saluga | 49 | Head | Inspector | Czechoslovakia |
| 59 | Anna E. Saluga | 41 | Wife-H | — | Czechoslovakia |
| 60 | Lawrence W. Saluga | 16 | Son | — | Ohio |
| 61 | Dorothy C. Saluga | 13 | Daughter | — | Ohio |
| 62 | August Simion | 39 | Head | Carpenter | Ohio |
| 63 | Beulah G. Simion | 39 | Wife-H | — | Pennsylvania |
| 64 | Charles N. Smalls | 56 | Head | Waiter | South Carolina |
| 65 | Carrie M. Smalls | 32 | Wife-H | — | Ohio |
| 66 | Gertrude Pettiford | 30 | Head | Cleaning | Georgia |
| 67 | Arthur Sanders | 20 | Cousin | Valet | Georgia |
| 68 | Daniel S. Koehler | 53 | Head | Agent | Ohio |
| 69 | Francis E. Koehler | 52 | Wife-H | — | Ohio |
| 70 | Grace M. Koehler | 20 | Daughter | — | Ohio |
| 71 | Mary K. Koehler | 15 | Daughter | — | Ohio |
| 72 | Daniel W. Koehler | 15 | Son | — | Ohio |
| 73 | Doris B. Koehler | 12 | Daughter | — | Ohio |
| 74 | William L. Crowley | 62 | Head | — | Ohio |
| 75 | Laura M. Crowley | 55 | Wife-H | — | Ohio |
| 76 | Paul B. Crowley | 34 | Son | Foreman | Ohio |
| 77 | Clyde L. Crowley | 28 | Son | — | Ohio |
| 78 | Ruth L. Crowley | 24 | Daughter | Truck Driver | Ohio |
| 79 | Mary L. Crowley THIS PERSON | 20 | Daughter | Asst. Chief Clerk | Ohio |
| 80 | Phoebe M. Crowley | 16 | Daughter | Comptometer Operator | Ohio |
| 81 | Leroy E. Crowley | 14 | Son | — | Ohio |
| 82 | Phyllis M. Crowley | 84 | Mother | — | Ohio |
| 83 | Emma P. Likens | 63 | Head | — | Pennsylvania |
| 84 | Samuel M. Smith | 43 | Head | Electrician | Pennsylvania |
| 85 | Delilah A. Smith | 38 | Wife-H | — | Pennsylvania |
| 86 | Esther Smith | 19 | Daughter | Stenographer | Connecticut |
| 87 | Raymond C. Smith | 15 | Son | — | Connecticut |
| 88 | Doris H. Smith | 11 | Daughter | — | Pennsylvania |
| 89 | Samuel C. Smith | 67 | Father | — | Pennsylvania |
| 90 | Margaret C. O'Neil | 46 | Head | — | Ohio |
| 91 | Betty R. O'Neil | 24 | Daughter | — | Ohio |
| 92 | Margaret C. O'Neil | 16 | Daughter | Clerk, File | Ohio |
| 93 | William O'Neil | 14 | Son | — | Ohio |
| 94 | John O'Neil | 11 | Son | — | Ohio |
| 95 | Ursula Hand | 23 | Daughter | — | Ohio |
| 96 | Elizabeth Hand | 1 | Granddaughter | Mail Clerk | Ohio |
| 97 | Joan Hand | 0 | Granddaughter | — | Ohio |
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)