MS
Mary Shea — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Shea across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 8-person household.
Age 16
b. ~1914
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Shea |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1914 |
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 |
|---|---|---|---|---|
| Elizabeth Shea | Daughter | — | 8 | ~1922 |
| Margaret Shea | Daughter | — | 10 | ~1920 |
| Frances Shea | Daughter | — | 21 | ~1909 |
| Mary Shea | Daughter | — | 16 | ~1914 |
| John Shea | Head | — | 55 | ~1875 |
| Jean Shea | Son | — | 12 | ~1918 |
| James Shea | Son | — | 19 | ~1911 |
| Julia Shea | Spouse | — | 44 | ~1886 |
Census Appearances
1930
Cook, Illinois
Daughter, age 16
Cook, Illinois · implied b. ~1914 — 8 household members
| Surname | Shea |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 27
Cook-County, Illinois · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaw |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Industry | 0 |
| 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 Shea across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Shea
Daughter · 1930 · age 16 · b. ~1914 · Illinois
★ You are viewing this record
Sibling
Jean Shea
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Shea
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Shea
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Shea
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Shea
Sibling · 1930 · age 10
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:illinoiscensus00reel493ns:0150)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Hillyard | 39 | Head | Foreman | Illinois |
| 2 | Rachel Hillyard | 39 | Wife | — | Illinois |
| 3 | Lois Hillyard | 4 | Daughter | — | Illinois |
| 4 | Mary Jane Hillyard | 2 | Daughter | — | Illinois |
| 5 | John Luce | 35 | Head | General Mgr | Illinois |
| 6 | Elizabeth Luce | 37 | Wife | — | Illinois |
| 7 | John Luce | 15 | Son | — | Illinois |
| 8 | David Luce | 12 | Son | — | Illinois |
| 9 | George O'Brien | 55 | Head | Grocer | Illinois |
| 10 | Eila O'Brien | 52 | Wife | — | Illinois |
| 11 | Alice O'Brien | 20 | Daughter | Bookkeeper | Illinois |
| 12 | Alice Walley | 42 | Head | Draftswoman | Illinois |
| 13 | Myrtle Walley | 33 | Wife | — | Illinois |
| 14 | Betty Walley | 6 | Daughter | — | Illinois |
| 15 | Florence Peterson | 35 | Roomer | Stenographer | Illinois |
| 16 | Walter Klump | 40 | Head | Purchasing Agt | Illinois |
| 17 | Signe Klump | 33 | Wife | — | Illinois |
| 18 | Marjorie Klump | 9 | Daughter | — | Illinois |
| 19 | Alice Klump | 6 | Daughter | — | Illinois |
| 20 | John Shea | 55 | Head | Policeman | Ireland Free S |
| 21 | Julia Shea | 44 | Wife | — | Ireland Free S |
| 22 | James Shea | 19 | Son | — | Illinois |
| 23 | Mary Shea THIS PERSON | 16 | Daughter | — | Illinois |
| 24 | Jean Shea | 12 | Son | — | Illinois |
| 25 | Elizabeth Shea | 8 | Daughter | — | Illinois |
| 26 | Frances Shea | 21 | Daughter | Stenographer | Illinois |
| 27 | Margaret Shea | 10 | Daughter | — | Illinois |
| 28 | Joseph Wagner | 39 | Head | Instrument Maker | Germany |
| 29 | Elizabeth Wagner | 38 | Wife | — | Germany |
| 30 | Ruth Wagner | 12 | Daughter | — | Illinois |
| 31 | Richard Wagner | 6 | Son | — | Illinois |
| 32 | John Carlson | 64 | Head | Plasterer | Sweden |
| 33 | Charlotte Carlson | 61 | Wife | — | Sweden |
| 34 | Irene Carlson | 26 | Daughter | Teacher | Illinois |
| 35 | Harry Le Boeuf | 33 | Head | Truck Driver | Illinois |
| 36 | Ruth Le Boeuf | 31 | Wife | — | Illinois |
| 37 | Virginia Le Boeuf | 2 | Daughter | — | Illinois |
| 38 | George Le Boeuf | 3 | Son | — | Illinois |
| 39 | Carl Larson | 37 | Roomer | Crane Operator | Sweden |
| 40 | Carl Schmidt | 53 | Head | Clerk | Germany |
| 41 | Mary Schmidt | 49 | Wife | — | Luxemburg |
| 42 | Andrew Mcpherson | 71 | Head | — | Canada |
| 43 | Elizabeth Mcpherson | 59 | Wife | — | Illinois |
| 44 | Thomas Mcpherson | 32 | Son | Electrician | Illinois |
| 45 | Kathleen Mcpherson | 28 | Daughter-in-law | File Clerk | Illinois |
| 46 | Arthur Ladenberger | 25 | Roomer | Bookkeeper | Illinois |
| 47 | James Mccabe | 49 | Head | Grocer | Illinois |
| 48 | Lillian Mccabe | 47 | Wife | — | Illinois |
| 49 | James Mccabe | 14 | Son | — | Illinois |
| 50 | Margaret Crawley | 24 | Roomer | Operator | Ireland |
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)