MH
Mary Hayes — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Hayes across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Peter & John — first a daughter (b.~1908), then head of a 12-person household.
Age 22
b. ~1908
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Hayes |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Automobile Parts |
| 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 | ~1908 |
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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rose Hayes | Daughter | — | 9 | ~1921 |
| Mary Hayes | Daughter | — | 22 | ~1908 |
| Agnes Hayes | Daughter | — | 14 | ~1916 |
| Catherine Hayes | Daughter | — | 15 | ~1915 |
| Delores Hayes | Daughter | — | 5 | ~1925 |
| John Hayes | Head | — | 52 | ~1878 |
| Mary Hayes | Other | — | 47 | ~1883 |
| Peter Hayes | Son | — | 17 | ~1913 |
| William Hayes | Son | — | 12 | ~1918 |
| Matthew Hayes | Son | — | 19 | ~1911 |
| James Hayes | Son | — | 18 | ~1912 |
| Walter Hayes | Son | — | 7 | ~1923 |
Census Appearances
1910
Cook, Illinois
Daughter, age 3
Cook, Illinois · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Daughter, age 12
Cook, Illinois · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 22
Cook, Illinois · implied b. ~1908 — 12 household members
| Surname | Hayes |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Stenographer |
| Industry | Automobile Parts |
| 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 Mary Hayes across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father Peter Hayes (~0.92 confidence) and father John Hayes (~0.92 confidence) and mother Mary Hayes (~0.92 confidence) and mother Mary Hayes (~0.92 confidence) and father John Hayes (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Hayes
b. ~1877
Source father
● Household
· direct · ~0.92
Father
John Hayes
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Mary Hayes
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Mary Hayes
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
John Hayes
b. ~1883
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Hayes
Daughter · 1930 · age 22 · b. ~1908 · Illinois
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Sibling
James Hayes
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Hayes
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Matthew Hayes
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Hayes
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Hayes
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Hayes
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Delores Hayes
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peter Hayes
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Hayes
Sibling · 1930 · age 14
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:illinoiscensus00reel462:0307)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Carmela Alberti | 36 | Wife-H | — | Italy |
| 52 | Anthony Alberti | 5 | Son | — | Illinois |
| 53 | Clara Alberti | 3 | Daughter | — | Illinois |
| 54 | Anna M. Alberti | 2 | Daughter | — | Illinois |
| 55 | Elvida Alberti | 0 | Daughter | — | Illinois |
| 56 | Patrick O'Connor | 57 | Head | Chauffeur | Ireland |
| 57 | Mary O'Connor | 54 | Wife-H | — | Ireland |
| 58 | James O'Connor | 34 | Son | Policeman | Illinois |
| 59 | John O'Connor | 25 | Son | Helper Wagon | Illinois |
| 60 | Margaret O'Connor | 18 | Daughter | — | Illinois |
| 61 | Catherine O'Connor | 16 | Daughter | — | Illinois |
| 62 | Helen O'Connor | 10 | Daughter | — | Illinois |
| 63 | Thomas O'Connor | 21 | Son | Clerical | Illinois |
| 64 | James Linkin | 40 | Head | Labor Organizer | Illinois |
| 65 | Mary Linkin | 40 | Wife-H | — | Illinois |
| 66 | Mary Harrington | 67 | Head-H | — | Illinois |
| 67 | Nellie Harrington | 40 | Daughter | Bookkeeper | Illinois |
| 68 | Alice Harrington | 38 | Daughter | Bindery | Illinois |
| 69 | Edward Harrington | 36 | Son | Claim Clerk | Illinois |
| 70 | Ethel Harrington | 31 | Daughter | Cashier | Illinois |
| 71 | Beatrice Harrington | 23 | Daughter | Typist | Illinois |
| 72 | Adam Brandenburg | 32 | Son-in-law | Tool Maker | Illinois |
| 73 | Helen Brandenburg | 32 | Daughter | Clerical | Illinois |
| 74 | Matthew G. Condon | 57 | Head | Credit Manager | Illinois |
| 75 | Marian F. Condon | 53 | Wife-H | — | Illinois |
| 76 | Valdrian Condon | 28 | Daughter | Proofreader | Illinois |
| 77 | Frances Condon | 24 | Daughter | Stenographer | Illinois |
| 78 | Catherine Condon | 22 | Daughter | Secretary | Illinois |
| 79 | Bernadette Condon | 18 | Daughter | Stenographer | Illinois |
| 80 | John Hayes | 52 | Head | Policeman | Ireland |
| 81 | Mary Hayes | 47 | Wife-H | — | Ireland |
| 82 | Mary Hayes THIS PERSON | 22 | Daughter | Stenographer | Illinois |
| 83 | Matthew Hayes | 19 | Son | Stenographer | Illinois |
| 84 | James Hayes | 18 | Son | Order Filler | Illinois |
| 85 | Peter Hayes | 17 | Son | — | Illinois |
| 86 | Catherine Hayes | 15 | Daughter | — | Illinois |
| 87 | Agnes Hayes | 14 | Daughter | — | Illinois |
| 88 | William Hayes | 12 | Son | — | Illinois |
| 89 | Rose Hayes | 9 | Daughter | — | Illinois |
| 90 | Walter Hayes | 7 | Son | — | Illinois |
| 91 | Delores Hayes | 5 | Daughter | — | Illinois |
| 92 | Catherine Cargill | 43 | Head-H | Typist | Illinois |
| 93 | Edward Cargill | 17 | Son | Office Boy | Georgia |
| 94 | Mary Cargill | 19 | Daughter | — | Georgia |
| 95 | Irene Cargill | 15 | Daughter | — | Illinois |
| 96 | Joseph Dooling | 41 | Brother | Mail Carrier | Illinois |
| 97 | William Metcalf | 67 | Head | Electrician | Maryland |
| 98 | Harriet Metcalf | 58 | Wife-H | — | Wisconsin |
| 99 | Raymond Metcalf | 30 | Son | Salesman | Iowa |
| 100 | William Jr. Metcalf | 22 | Son | Clerk | Illinois |
Pedigree Summary
Mary + 9 siblings
Gen 1 · 5 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)