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Mary Lyons — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Lyons across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents William & Frank — first a daughter (b.~1910), then head of a 7-person household.
Age 20
b. ~1910
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Lyons |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Telephone Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Stenographer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1910 |
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 |
|---|---|---|---|---|
| Mary Lyons | Daughter | — | 20 | ~1910 |
| Eleanor Lyons | Daughter | — | 16 | ~1914 |
| Alice Lyons | Daughter | — | 18 | ~1912 |
| Frank Lyons | Head | — | 53 | ~1877 |
| Robert Lyons | Son | — | 22 | ~1908 |
| Thomas Lyons | Son | — | 13 | ~1917 |
| Mary Lyons | Spouse | — | 50 | ~1880 |
Census Appearances
1920
Cook, Illinois
Daughter, age 12
Cook, Illinois · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| 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
Daughter, age 20
Cook, Illinois · implied b. ~1910 — 7 household members
| Surname | Lyons |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Stenographer |
| Industry | Telephone Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 31
Cook-County, Illinois · implied b. ~1909 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO CITY |
| 1935 Residence (County) | COOK |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 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 Lyons across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Lyons (~0.92 confidence) and father Frank Lyons (~0.92 confidence) and mother Mary Lyons (~0.92 confidence) and mother Mary Lyons (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Lyons
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Frank Lyons
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Mary Lyons
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Mary Lyons
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Lyons
Daughter · 1930 · age 20 · b. ~1910 · Illinois
★ You are viewing this record
Sibling
Alice Lyons
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Lyons
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Lyons
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lyons
Sibling · 1930 · age 13
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:illinoiscensus00reel460:0451)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Francis Dacotano | 23 | Daughter | Stenographer | New York |
| 52 | Nathan Dacotano | 20 | Son | Salesman | New York |
| 53 | James Dacotano | 18 | Son | None | New York |
| 54 | Isabel Dacotano | 12 | Daughter | None | New York |
| 55 | Elizabeth Ryan | 39 | Head | None | Illinois |
| 56 | James Ryan | 23 | Son | None | Illinois |
| 57 | Charles Ryan | 22 | Daughter | None | Illinois |
| 58 | Frank Lyons | 53 | Head | Electrician | Illinois |
| 59 | Mary Lyons | 50 | Wife | None | Illinois |
| 60 | Robert Lyons | 22 | Son | Electrician | Illinois |
| 61 | Mary Lyons THIS PERSON | 20 | Daughter | Stenographer | Illinois |
| 62 | Alice Lyons | 18 | Daughter | None | Illinois |
| 63 | Eleanor Lyons | 16 | Daughter | None | Illinois |
| 64 | Thomas Lyons | 13 | Son | None | Illinois |
| 65 | Albert Smith | 65 | Head | Watchman | Iowa |
| 66 | Catherine Smith | 53 | Wife | None | Iowa |
| 67 | Peter Bacci | 32 | Head | Plasterer | Italy |
| 68 | Mary Bacci | 30 | Wife | None | Italy |
| 69 | Irene Bacci | 10 | Daughter | None | Illinois |
| 70 | Charles Ghisoni | 32 | Boarder | Waiter | Italy |
| 71 | Edward Bombard | 44 | Head | Tile Setter | Michigan |
| 72 | Catherine Bombard | 42 | Wife | None | Michigan |
| 73 | Catherine Bombard | 20 | Daughter | Operator | Illinois |
| 74 | Ethel Bombard | 18 | Daughter | Laundry | Illinois |
| 75 | Everett Bombard | 17 | Daughter | None | Illinois |
| 76 | Evelyn Bombard | 16 | Daughter | None | Illinois |
| 77 | Leonard Bombard | 13 | Son | None | Illinois |
| 78 | Maryland Bombard | 12 | Daughter | None | Illinois |
| 79 | Nora Bombard | 10 | Daughter | None | Illinois |
| 80 | Herbert Bombard | 8 | Son | None | Illinois |
| 81 | John Bombard | 6 | Son | None | Illinois |
| 82 | Edward Walker | 53 | Head | Watchman | Mississippi |
| 83 | Louisa Walker | 48 | Wife | None | Illinois |
| 84 | Alice Walker | 21 | Daughter | Book Keeper | Illinois |
| 85 | Harry Walker | 17 | Son | None | Illinois |
| 86 | Edward Walker | 16 | Son | None | Illinois |
| 87 | Raymond Walker | 14 | Son | None | Illinois |
| 88 | Louise Williams | 23 | Daughter | None | Illinois |
| 89 | Robert Williams | 6 | Grandson | None | Illinois |
| 90 | Minerva Mason | 23 | Daughter | None | Illinois |
| 91 | Neil Mason | 1 | Grandson | None | Illinois |
| 92 | Albert B Miller | 53 | Head | Janitor | Illinois |
| 93 | Michael Kavanaugh | 36 | Head | Checker | Tennessee |
| 94 | Mary Kavanaugh | 47 | Wife | None | New York |
| 95 | Francis Mcclurish | 40 | Son | None | Tennessee |
| 96 | Earl Murphy | 29 | Head | Roofer | Illinois |
| 97 | Ethel Murphy | 42 | Boarder | None | Illinois |
| 98 | Joseph Devecchio | 42 | Head | Retail Merchant | Italy |
| 99 | Josephine Devecchio | 22 | Wife | None | Italy |
| 100 | Salvatore Devecchio | 21 | Son | Barber | Illinois |
Pedigree Summary
Mary + 4 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)