MD
Mary Dalton — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Dalton across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 8-person household.
Age 13
b. ~1917
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Dalton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1917 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Dalton | Daughter | — | 13 | ~1917 |
| Margaret Dalton | Spouse | — | 35 | ~1895 |
| James Dalton | Head | — | 38 | ~1892 |
| James Dalton | Son | — | 5 | ~1925 |
| Alice Dalton | Daughter | — | 11 | ~1919 |
| Margaret Dalton | Daughter | — | 9 | ~1921 |
| Loretta Dalton | Daughter | — | 3 | ~1927 |
| Catherine Dalton | Daughter | — | 7 | ~1923 |
Census Appearances
1930
Cook, Illinois
Daughter, age 13
Cook, Illinois · implied b. ~1917 — 8 household members
| Surname | Dalton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Other, age 23
Cook-County, Illinois · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dalton |
| Given Name | Margaret |
| Relationship to Head | Niece |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Proofreader |
| Industry | Printing Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Dalton across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dalton
Daughter · 1930 · age 13 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Loretta Dalton
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Dalton
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Dalton
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Dalton
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Dalton
Sibling · 1930 · age 11
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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel469:0573)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stephen Winnel | 69 | Head | Machinist | New York |
| 2 | Emma L Winnel | 67 | Wife | — | England |
| 3 | Minnie Queen | 63 | Lodger | — | England |
| 4 | Antonio Orlando | 44 | Head | Laborer | Italy |
| 5 | Grace Orlando | 38 | Wife | — | Italy |
| 6 | George Orlando | 18 | Son | — | Michigan |
| 7 | Joseph Orlando | 16 | Son | — | Michigan |
| 8 | Marion Orlando | 14 | Daughter | — | Michigan |
| 9 | Mary O'Hearn | 54 | Head | — | Irish Free State |
| 10 | Mary O'Hearn | 29 | Daughter | — | Illinois |
| 11 | Alice O'Hearn | 26 | Daughter | Stenographer | Illinois |
| 12 | Julia O'Hearn | 21 | Daughter | Clerk | Illinois |
| 13 | James O'Hearn | 19 | Son | Machinist | Illinois |
| 14 | John O'Hearn | 16 | Son | Office Boy | Illinois |
| 15 | Thomas O'Hearn | 14 | Son | — | Illinois |
| 16 | Edward O'Hearn | 12 | Son | — | Illinois |
| 17 | Peter Regula | 44 | Head | Machinist | Illinois |
| 18 | Emily Regula | 39 | Wife | — | Illinois |
| 19 | Lucille Stone | 17 | Stepdaughter | Laborer | Illinois |
| 20 | James Dalton | 38 | Head | Conductor | Irish Free State |
| 21 | Margaret Dalton | 35 | Wife | — | Irish Free State |
| 22 | Mary Dalton THIS PERSON | 13 | Daughter | — | Illinois |
| 23 | Alice Dalton | 11 | Daughter | — | Illinois |
| 24 | Margaret Dalton | 9 | Daughter | — | Illinois |
| 25 | Catherine Dalton | 7 | Daughter | — | Illinois |
| 26 | James Dalton | 5 | Son | — | Illinois |
| 27 | Loretta Dalton | 3 | Daughter | — | Illinois |
| 28 | George E Spiro | 37 | Head | Motorman | Illinois |
| 29 | Louise Spiro | 35 | Wife | — | Illinois |
| 30 | George Spiro | 13 | Son | — | Illinois |
| 31 | Bernice Spiro | 11 | Daughter | — | Illinois |
| 32 | Rosemary Spiro | 7 | Daughter | — | Illinois |
| 33 | Adolph Prinz | 46 | Head | Tailor | Czechoslovakia |
| 34 | Jenette Prinz | 38 | Wife | — | Pennsylvania |
| 35 | Martha Prinz | 18 | Daughter | — | Illinois |
| 36 | Sylvia Prinz | 11 | Daughter | — | Illinois |
| 37 | George Prinz | 13 | Son | — | Illinois |
| 38 | Stephen Moraveck | 45 | Head | Laborer | Czechoslovakia |
| 39 | Dorothy Moraveck | 36 | Wife | Janitress | Czechoslovakia |
| 40 | Anna Moraveck | 15 | Daughter | — | Czechoslovakia |
| 41 | John Moraveck | 13 | Son | — | Illinois |
| 42 | Stephen Moraveck | 11 | Son | — | Illinois |
| 43 | Michael Moraveck | 9 | Son | — | Illinois |
| 44 | Martin Moraveck | 6 | Son | — | Illinois |
| 45 | Mildred Moraveck | 5 | Daughter | — | Illinois |
| 46 | Samuel Treppiedi | 29 | Head | Shoemaker | Italy |
| 47 | Palma Treppiedi | 26 | Wife | — | Italy |
| 48 | Anna Treppiedi | 2 | Daughter | — | Italy |
| 49 | Grace Treppiedi | 1 | Daughter | — | Illinois |
| 50 | Alex Thomson | 43 | Head | Clerk | Scotland |
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)