MC
Mary Connell — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Connell across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 7-person household.
Age 11
b. ~1919
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Connell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Theresa Connell | Daughter | — | 7 | ~1923 |
| Virginia Connell | Daughter | — | 10 | ~1920 |
| Alice Connell | Daughter | — | 8 | ~1922 |
| Lawrence Connell | Head | — | 32 | ~1898 |
| Mary Connell | Daughter | — | 11 | ~1919 |
| Margaret Connell | Spouse | — | 32 | ~1898 |
| Lawrence Connell | Son | — | 2 | ~1928 |
Census Appearances
1930
Cook, Illinois
Daughter, age 11
Cook, Illinois · implied b. ~1919 — 7 household members
| Surname | Connell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 21
Cook-County, Illinois · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cannella |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero town |
| 1935 Residence (County) | Cook |
| Occupation | Office Work |
| Industry | Paint Manufacturer |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | H 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 Connell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Connell
Daughter · 1930 · age 11 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Theresa Connell
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Connell
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Connell
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Connell
Sibling · 1930 · age 2
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:illinoiscensus00reel497:0332)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Lopotko | 37 | Head | Machinist | Russia |
| 2 | Frances Lopotko | 27 | Wife | — | Czechoslovakia |
| 3 | William Jr Lopotko | 6 | Son | — | Illinois |
| 4 | Anna Lopotko | 5 | Daughter | — | Illinois |
| 5 | Alexander Lopotko | 3 | Son | — | Illinois |
| 6 | Lawrence Connell | 32 | Head | Driver | Illinois |
| 7 | Margaret Connell | 32 | Wife | — | Illinois |
| 8 | Mary Connell THIS PERSON | 11 | Daughter | — | Illinois |
| 9 | Virginia Connell | 10 | Daughter | — | Illinois |
| 10 | Alice Connell | 8 | Daughter | — | Illinois |
| 11 | Theresa Connell | 7 | Daughter | — | Illinois |
| 12 | Lawrence Connell | 2 | Son | — | Illinois |
| 13 | Theresa Stonko | 40 | Head | Laborer | Czechoslovakia |
| 14 | Susan Stonko | 14 | Daughter | — | Illinois |
| 15 | Andrew Stonko | 11 | Son | — | Illinois |
| 16 | Louis Bazdatis | 32 | Head | Salesman | Czechoslovakia |
| 17 | Theresa Bazdatis | 27 | Wife | — | Czechoslovakia |
| 18 | Lisette Steinken | 59 | Head | — | Illinois |
| 19 | Richard Fuhrman | 45 | Head | Machinist | Ohio |
| 20 | Barbara Fuhrman | 24 | Wife | — | Illinois |
| 21 | Richard Jr Fuhrman | 2 | Son | — | Illinois |
| 22 | Josephine Galli | 39 | Head | Sewing | Italy |
| 23 | William Schulty | 56 | Head | Painter | Germany |
| 24 | Anna Schulty | 54 | Wife | — | Illinois |
| 25 | Frank Smith | 71 | Head | Tool Maker | New York |
| 26 | Edna Smith | 38 | Daughter | Saleswoman | Illinois |
| 27 | Arthur Hassell | 41 | Head | Surveyor | Indiana |
| 28 | Lucille M Hassell | 37 | Wife | — | Illinois |
| 29 | Lois Ann Hassell | 6 | Daughter | — | Illinois |
| 30 | Henry Hopp | 52 | Head | Tile Contractor | New York |
| 31 | Pauline Hopp | 51 | Wife | — | Germany |
| 32 | John Zarveles | 63 | Boarder | Electrician | New York |
| 33 | Clifford Pruter | 33 | Head | Traveling Salesman | Wisconsin |
| 34 | Emma Pruter | 29 | Wife | — | Wisconsin |
| 35 | Elizabeth Pruter | 2 | Daughter | — | Illinois |
| 36 | Stanley Plucinski | 34 | Head | Sprayer | Illinois |
| 37 | Mathilda Plucinski | 34 | Wife | — | Illinois |
| 38 | Lawrence Plucinski | 5 | Son | — | Illinois |
| 39 | Louis Plucinski | 41 | Head | Superintendent | Poland |
| 40 | Elsie Plucinski | 35 | Wife | — | Wisconsin |
| 41 | Robert L Plucinski | 17 | Son | — | Illinois |
| 42 | Virginia Plucinski | 14 | Daughter | — | Illinois |
| 43 | Edward F Ahern | 55 | Head | Lawyer | Illinois |
| 44 | Mabel Ahern | 44 | Wife | — | Illinois |
| 45 | Dorothy Ahern | 23 | Daughter | — | Illinois |
| 46 | Marion Ahern | 17 | Daughter | — | Illinois |
| 47 | Daniel Ahern | 15 | Son | — | Illinois |
| 48 | Thomas Mcmonies | 61 | Head | Pharmacist | Canada Eng |
| 49 | Bessie Mcmonies | 60 | Wife | — | Ohio |
| 50 | Mary Mcmonies | 33 | Daughter | Bookkeeper | Illinois |
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)