WM
William Mccarthy — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this William Mccarthy across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Steven & Edward — first a son (b.~1909), then head of a 6-person household.
Age 21
b. ~1909
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | McCarthy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Receiving Clerk |
| Industry | Hotel |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Receiving Clerk |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1909 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mccarthy | Daughter | — | 13 | ~1917 |
| Rita Mccarthy | Daughter | — | 15 | ~1915 |
| Steven Mccarthy | Head | — | 54 | ~1876 |
| William Mccarthy | Son | — | 21 | ~1909 |
| John Mccarthy | Son | — | 23 | ~1907 |
| Mary Mccarthy | Spouse | — | 50 | ~1880 |
Census Appearances
1910
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1909 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mc Carthy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 21
Cook, Illinois · implied b. ~1909 — 6 household members
| Surname | McCarthy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Receiving Clerk |
| Industry | Hotel |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 William Mccarthy across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father Steven Mccarthy (~0.92 confidence) and father Edward Mc Carthy (~0.92 confidence) and mother Mary Mccarthy (~0.92 confidence) and mother Agatha Mc Carthy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Steven Mccarthy
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Edward Mc Carthy
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Mary Mccarthy
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Agatha Mc Carthy
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mccarthy
Son · 1930 · age 21 · b. ~1909 · Illinois
★ You are viewing this record
Sibling
John Mccarthy
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mccarthy
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mccarthy
Sibling · 1930 · age 15
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:illinoiscensus00reel434:0968)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lucille Day | 30 | Head-H | Proprietor | Illinois |
| 2 | Loretta Sufness | 13 | Daughter | — | Indiana |
| 3 | Bertha Sufness | 9 | Daughter | — | Indiana |
| 4 | Arnold Trauserman | 34 | Boarder | Laborer | Germany |
| 5 | Jesse Lunn | 21 | Boarder | Laborer | Indiana |
| 6 | Peter Gueldegis | 18 | Boarder | Laborer | Pennsylvania |
| 7 | Mary Mccormick | 50 | Head-H | — | Illinois |
| 8 | George Mccormick | 24 | Son | Chauffeur | Illinois |
| 9 | Bernice Mccormick | 12 | Daughter | — | Illinois |
| 10 | Frank Boyd | 22 | Boarder | Chauffeur | Illinois |
| 11 | Irene Boyd | 20 | Daughter | — | Illinois |
| 12 | Irene M. Boyd | 1 | Gr-Daughter | — | Illinois |
| 13 | James Pace | 50 | Boarder | Pressman | Illinois |
| 14 | Steven Mccarthy | 54 | Head | Conductor | Illinois |
| 15 | Mary A. Mccarthy | 50 | Wife | — | Illinois |
| 16 | John S. Mccarthy | 23 | Son | Conductor | Illinois |
| 17 | William Mccarthy THIS PERSON | 21 | Son | Receiving Clerk | Illinois |
| 18 | Rita Mccarthy | 15 | Daughter | — | Illinois |
| 19 | Margaret Mccarthy | 13 | Daughter | — | Illinois |
| 20 | John Jonas | 52 | Head | Dieman | Lithuania |
| 21 | Nellie Jonas | 53 | Wife | — | Lithuania |
| 22 | Rose Jonas | 17 | Daughter | — | Illinois |
| 23 | Joseph Framelis | 35 | Boarder | Laborer | Lithuania |
| 24 | Constance Evanoskas | 37 | Head | — | Lithuania |
| 25 | Richard Evanoskas | 16 | Son | Shipping Clerk | Illinois |
| 26 | Grace Evanoskas | 15 | Daughter | — | Illinois |
| 27 | Emily Evanoskas | 11 | Daughter | — | Illinois |
| 28 | Louise Evanoskas | 3 | Daughter | — | Illinois |
| 29 | Frank Eill | 41 | Boarder | Motorman | Italy |
| 30 | Charles Columbo | 51 | Head | Watchman | Italy |
| 31 | Rose Columbo | 42 | Wife | — | Italy |
| 32 | Joseph Columbo | 22 | Son | Salesman | Italy |
| 33 | Anthony Columbo | 19 | Son | Stencil Maker | Illinois |
| 34 | Michael Legno | 19 | Boarder | Stock Clerk | Illinois |
| 35 | Charles Prankokas | 52 | Head | Laborer | Lithuania |
| 36 | Anna Prankokas | 52 | Wife | — | Lithuania |
| 37 | Charles Jr. Prankokas | 25 | Son | Laborer | Illinois |
| 38 | Ray Simus | 23 | Daughter | Clerk | Illinois |
| 39 | Stanley Simus | 24 | Son-in-law | — | Illinois |
| 40 | Stanley Prankokas | 22 | Nephew | Laborer | Lithuania |
| 41 | Paul Ompka | 48 | Head | Janitor | Poland |
| 42 | Josephine Ompka | 42 | Wife | — | Poland |
| 43 | Victor Ompka | 23 | Son | Base Ball Player | Illinois |
| 44 | Bernice Ompka | 20 | Daughter | Waitress | Indiana |
| 45 | Roman Ompka | 19 | Son | Clerk | Illinois |
| 46 | Edward Ompka | 17 | Son | Clerk | Illinois |
| 47 | Lillian Ompka | 14 | Daughter | — | Illinois |
| 48 | Joseph Ompka | 10 | Son | — | Illinois |
| 49 | Dorothy Ompka | 9 | Daughter | — | Illinois |
| 50 | Rita Ompka | 6 | Daughter | — | Illinois |
Pedigree Summary
William + 3 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)