MI
Mary Irwin — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cuyahoga, Ohio
Our Model Tree links this Mary Irwin across the 1920 and 1930 US Censuses in Cuyahoga, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1911), then head of a 9-person household.
Age 19
b. ~1911
Female
Daughter
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cuyahoga, Ohio |
| Surname | Irwin |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cleveland Heights City |
| Est. Birth Year | ~1911 |
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 |
|---|---|---|---|---|
| Walter Irwin | Head | — | 51 | ~1879 |
| Barbara Irwin | Daughter | — | 8 | ~1922 |
| Walter Irwin | Son | — | 12 | ~1918 |
| Jane Irwin | Daughter | — | 16 | ~1914 |
| Anne Murray | Other | — | 46 | ~1884 |
| Esther Irwin | Other | — | 50 | ~1880 |
| Mary Irwin | Daughter | — | 19 | ~1911 |
| Betty Irwin | Daughter | — | 17 | ~1913 |
| Marie Murray | Other | — | 56 | ~1874 |
Census Appearances
1920
Cuyahoga, Ohio
Daughter, age 9
Cuyahoga, Ohio · implied b. ~1911 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Daughter, age 19
Cuyahoga, Ohio · implied b. ~1911 — 9 household members
| Surname | Irwin |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| 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 Irwin across 2 US Census years (1920 and 1930) in Cuyahoga, Ohio, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Irwin
Daughter · 1930 · age 19 · b. ~1911 · Ohio
★ You are viewing this record
Sibling
Jane Irwin
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Irwin
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Irwin
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Irwin
Sibling · 1930 · age 17
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 — Cuyahoga, Ohio
Open full size
1930 US Federal Census — Cuyahoga, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1784:0330)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ralf Profant | 32 | Head | Road Inspector | Ohio |
| 2 | Lorraine Profant | 40 | Wife-H | — | Canada English |
| 3 | Mitchell Emerson Profant | 13 | Step-son | — | Ohio |
| 4 | Frank J. Dupras | 39 | Head | French Teacher | Canada French |
| 5 | Grace C. Dupras | 39 | Wife-H | — | New York |
| 6 | Franklin Dupras | 6 | Son | — | Missouri |
| 7 | Kern Olive M. Dupras | 33 | Lodger | Teacher | Ohio |
| 8 | Daniel Marx | 47 | Head | Merchant | Ohio |
| 9 | Rose Marx | 42 | Wife-H | — | Russia |
| 10 | Merle Marx | 16 | Son | — | Ohio |
| 11 | Marjorie Marx | 12 | Daughter | — | Ohio |
| 12 | Ubido Magdalene Marx | 17 | Servant | Servant | Ohio |
| 13 | Frederick Lindeman | 44 | Head | Foreman | Germany |
| 14 | Loma Lindeman | 48 | Wife-H | — | Ohio |
| 15 | Edward Lindeman | 35 | Son | Engineer-Stationary | Ohio |
| 16 | John J. Collins | 56 | Head | Asst. Cashier | New York |
| 17 | Maria Collins | 50 | Wife-H | — | Ohio |
| 18 | John R. Collins | 20 | Son | — | Ohio |
| 19 | Eleanor Collins | 16 | Daughter | — | Ohio |
| 20 | James E. Horgan | 45 | Head | Electrical Engineer | North Ireland |
| 21 | Avis C. Horgan | 38 | Wife-H | — | Missouri |
| 22 | Maurice E. Horgan | 16 | Son | — | Missouri |
| 23 | Hammond Ethel Horgan | 20 | Servant | Servant | Louisiana |
| 24 | Edgar H. Merrick | 46 | Head | Sales Engineer | Canada English |
| 25 | Florence Merrick | 43 | Wife-H | — | New York |
| 26 | Frances Merrick | 11 | Daughter | — | New York |
| 27 | Richard Merrick | 6 | Son | — | Ohio |
| 28 | George F. Wilson | 59 | Head | Physician | Pennsylvania |
| 29 | Elizabeth Wilson | 55 | Wife-H | — | Ohio |
| 30 | Warren Brooks | 25 | Son-in-law | Elec. Engineer | Ohio |
| 31 | Dorothy Brooks | 23 | Daughter | — | Ohio |
| 32 | Walter J. Irwin | 51 | Head | Physician | Ohio |
| 33 | Esther Irwin | 50 | Wife-H | — | Ohio |
| 34 | Mary Louise Irwin THIS PERSON | 19 | Daughter | — | Ohio |
| 35 | Betty Irwin | 17 | Daughter | — | Ohio |
| 36 | Jane Irwin | 16 | Daughter | — | Ohio |
| 37 | Walter Jr. Irwin | 12 | Son | — | Ohio |
| 38 | Barbara Irwin | 8 | Daughter | — | Ohio |
| 39 | Marie P. Murray | 56 | Sister-in-law | — | Ohio |
| 40 | Anne F. Murray | 46 | Sister-in-law | Bookkeeper | Ohio |
| 41 | Helen K. Wallace | 35 | Head | Dean Of Girls | Ohio |
| 42 | Margaret G. Wallace | 27 | Sister-H | Information Clerk | Ohio |
| 43 | Charles R.B. Easty | 25 | Cousin | — | Washington |
| 44 | William W. Mcmellan | 48 | Head | Purchasing Agent | Michigan |
| 45 | Nell W. Mcmellan | 47 | Wife-H | — | Pennsylvania |
| 46 | Betty Mcmellan | 15 | Daughter | — | Pennsylvania |
| 47 | Robert Mcmellan | 11 | Son | — | Pennsylvania |
| 48 | Candace Williams | 80 | Mother-in-law | — | Illinois |
| 49 | John W. Frasier | 47 | Head | Dentist | Ohio |
| 50 | Grace Frasier | 45 | Wife-H | — | 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)