MD
Mary Duggan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Duggan across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1909), then head of a 7-person household.
Age 21
b. ~1909
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Duggan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Lithuania |
| Mother's Birthplace | Lithuania |
| Additional Details | |
| Occupation | Saleswoman |
| Industry | Dept store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Saleswoman |
| Township / Ward | Chicago |
| 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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bruno Duggan | Son | — | 19 | ~1911 |
| Joseph Duggan | Son | — | 13 | ~1917 |
| Sam Duggan | Head | — | 55 | ~1875 |
| William Duggan | Son | — | 15 | ~1915 |
| Sam Duggan | Son | — | 17 | ~1913 |
| Anna Duggan | Spouse | — | 47 | ~1883 |
| Mary Duggan | Daughter | — | 21 | ~1909 |
Census Appearances
1930
Cook, Illinois
Daughter, age 21
Cook, Illinois · implied b. ~1909 — 7 household members
| Surname | Duggan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Lithuania |
| Mother's Birthplace | Lithuania |
| Occupation | Saleswoman |
| Industry | Dept store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 32
Cook-County, Illinois · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Deegan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| 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 Duggan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Duggan
Daughter · 1930 · age 21 · b. ~1909 · Illinois
★ You are viewing this record
Sibling
Bruno Duggan
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Duggan
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Duggan
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sam Duggan
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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel436:0882)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Anne Perek | 48 | Head | — | Lithuania |
| 52 | John Perek | 18 | Son | — | Illinois |
| 53 | Martin Schutowicz | 70 | Boarder | — | Lithuania |
| 54 | John Zunko | 36 | Head | Machine Operator | Russia |
| 55 | Martha Zunko | 33 | Wife | — | Minnesota |
| 56 | Margaret Zunko | 9 | Daughter | — | Minnesota |
| 57 | Dorothy Zunko | 8 | Daughter | — | Illinois |
| 58 | John Lattas | 35 | Boarder | Laborer | Russia |
| 59 | Sam Duggan | 55 | Head | Laborer | Lithuania |
| 60 | Anna Duggan | 47 | Wife | — | Lithuania |
| 61 | Mary Duggan THIS PERSON | 21 | Daughter | Saleswoman | Illinois |
| 62 | Bruno Duggan | 19 | Son | Bookkeeper | Illinois |
| 63 | Sam Jr. Duggan | 17 | Son | — | Illinois |
| 64 | William Duggan | 15 | Son | — | Illinois |
| 65 | Joseph Duggan | 13 | Son | — | Illinois |
| 66 | Tony Arsona | 42 | Head | Laborer | Lithuania |
| 67 | Stella Arsona | 25 | Wife | — | Lithuania |
| 68 | Anthony Arsona | 3 | Daughter | — | Illinois |
| 69 | Mike Arsona | 2 | Son | — | Illinois |
| 70 | Mike Krejci | 47 | Head | — | Poland |
| 71 | Anna Krejci | 42 | Wife | — | Czechoslovakia |
| 72 | Mike Jr. Krejci | 16 | Son | — | Pennsylvania |
| 73 | Margaret Krejci | 16 | Daughter | — | Pennsylvania |
| 74 | Sylvester Sinkala | 42 | Head | Janitor | Lithuania |
| 75 | Rose Sinkala | 40 | Wife | — | Lithuania |
| 76 | John Sinkala | 13 | Son | — | Illinois |
| 77 | Stella Sinkala | 9 | Daughter | — | Illinois |
| 78 | Theodore Wablinski | 33 | Boarder | Laborer | Lithuania |
| 79 | Anton Krasauskas | 41 | Head | Janitor | Lithuania |
| 80 | Anna Krasauskas | 35 | Wife | — | Lithuania |
| 81 | Marian Krasauskas | 11 | Son | — | Illinois |
| 82 | Anton Krasauskas | 9 | Son | — | Illinois |
| 83 | Bruno Krasauskas | 3 | Son | — | Illinois |
| 84 | Frank Zawalewicz | 38 | Boarder | Butcher | Lithuania |
| 85 | Katherine Suratkowsky | 39 | Head | — | Galicia Austria |
| 86 | John Suratkowsky | 18 | Son | Truck Driver | Illinois |
| 87 | Joseph Suratkowsky | 17 | Son | Special Delivery | Illinois |
| 88 | Mary Suratkowsky | 13 | Daughter | — | Illinois |
| 89 | Andrew Suratkowsky | 11 | Son | — | Illinois |
| 90 | Victor Suratkowsky | 1 | Son | — | Illinois |
| 91 | John Conka | 55 | Head | Laborer | Galicia Austria |
| 92 | Michael Conka | 25 | Son | Shipping Clerk | Illinois |
| 93 | Mary Conka | 19 | Daughter | Core Winding | Illinois |
| 94 | Frank Conka | 17 | Son | — | Illinois |
| 95 | George Chrzanowski | 73 | Boarder | Laborer | Galicia Austria |
| 96 | Joseph Rusnak | 42 | Head | Beam Filler | Poland |
| 97 | Agnes Rusnak | 45 | Wife | — | Poland |
| 98 | Angeline Rusnak | 19 | Daughter | Soldering | Illinois |
| 99 | Helen Rusnak | 15 | Daughter | — | Illinois |
| 100 | Louise Knapk | 20 | Boarder | Packing | Wisconsin |
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)