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Mary Byrne — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Byrne across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 4-person household.
Age 55
b. ~1875
Female
Head
Born: Ireland
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Byrne |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1895 |
| Age at First Marriage | 32 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30.00 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1875 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Byrne | Head | — | 55 | ~1875 |
| John Byrne | Son | — | 28 | ~1902 |
| Elmer Byrne | Son | — | 22 | ~1908 |
| Edward Byrne | Son | — | 26 | ~1904 |
Census Appearances
1920
Cook, Illinois
Head, age 43
Cook, Illinois · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Byrne |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1891 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Year of Naturalization | 1891 |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Head, age 55
Cook, Illinois · implied b. ~1875 — 4 household members
| Surname | Byrne |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1895 |
| Age at First Marriage | 32 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30.00 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Other, age 65
Cook-County, Illinois · implied b. ~1875 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Byrne |
| Given Name | Mary |
| Relationship to Head | Mother in law |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Byrne across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Byrne
Head · 1930 · age 55 · b. ~1875 · Illinois
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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:illinoiscensus00reel463:0109)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Julia Noivy | 32 | Boarder | Clerk | Illinois |
| 2 | Mary Byrne THIS PERSON | 55 | Head | — | Ireland |
| 3 | John Byrne | 28 | Son | Lawyer | Illinois |
| 4 | Edward Byrne | 26 | Son | Clerk | Illinois |
| 5 | Elmer Byrne | 22 | Son | Marble Setter | Illinois |
| 6 | Mary Sheridan | 63 | Head | — | Illinois |
| 7 | Wm Sheridan | 30 | Son | Lawyer | Illinois |
| 8 | Walter Sheridan | 26 | Son | Clerk | Illinois |
| 9 | Patrick Mcnerney | 59 | Head | Salesman | Ireland |
| 10 | Ellen Mcnerney | 55 | Wife | — | Ireland |
| 11 | Thos Mcnerney | 25 | Son | Clerk | Illinois |
| 12 | Mary Mcnerney | 23 | Daughter | Operator | Illinois |
| 13 | Loretta Mcnerney | 21 | Daughter | Typist | Illinois |
| 14 | James Mcnerney | 14 | Son | — | Illinois |
| 15 | Thos Yust | 57 | Head | Worker | Ireland |
| 16 | Lillian Yust | 50 | Wife | — | Illinois |
| 17 | Harvey Yust | 5 | Son | — | Illinois |
| 18 | Thos Yust | 3 | Son | — | Illinois |
| 19 | Frances Yust | 3 | Daughter | — | Illinois |
| 20 | Wm V. Wheeler | 32 | Head | Recording Sec. | Illinois |
| 21 | Helen Wheeler | 29 | Wife | — | Illinois |
| 22 | John Wheeler | 2 | Son | — | Illinois |
| 23 | Robt. Wheeler | 1 | Son | — | Illinois |
| 24 | Etta Macdonald | 58 | Servant | Servant | Canada English |
| 25 | Bessie Mcberthy | 58 | Head | — | Pennsylvania |
| 26 | Jane Mcberthy | 33 | Daughter | Stenographer | Illinois |
| 27 | Chas Mcberthy | 31 | Son | Electrician | Illinois |
| 28 | Theodore Mueller | 62 | Head | — | Germany |
| 29 | Theresa Mueller | 53 | Wife | — | Germany |
| 30 | Frances Leullen | 45 | Head | — | Illinois |
| 31 | John P. Leullen | 21 | Son | — | Illinois |
| 32 | Alice Leullen | 70 | Mainlaw | — | Ireland |
| 33 | Denis Leullen | 48 | Nephew | Clerk | Ireland |
| 34 | Thos F. Sugar | 45 | Head | Expressman | Idaho |
| 35 | Eliz E. Sugar | 51 | Wife | — | Pennsylvania |
| 36 | Raymond Sugar | 22 | Son | Expressman | Illinois |
| 37 | W. J. Mccullough | 53 | Head | Prop. | Massachusetts |
| 38 | Mary Mccullough | 52 | Wife | — | Ireland |
| 39 | Virginia Mccullough | 27 | Daughter | Clerk | Illinois |
| 40 | Edward G. Mreen | 45 | Head | Secretary | Michigan |
| 41 | Lillian F. Mreen | 42 | Wife | — | Illinois |
| 42 | Dennis H. Quill | 64 | Father Law | Marble Setter | Ireland |
| 43 | Edw. P. Quill | 31 | Brother Law | Marble Setter | Illinois |
| 44 | Jeremiah Shanahan | 42 | Head | Telegrapher | Ireland |
| 45 | Mary A. Shanahan | 44 | Wife | — | Illinois |
| 46 | Martin F. Shanahan | 15 | Son | — | Illinois |
| 47 | Edw. J. Shanahan | 14 | Son | — | Illinois |
| 48 | Jeremiah Jr. Shanahan | 14 | Son | — | Illinois |
| 49 | Chas J. Shanahan | 12 | Son | — | Illinois |
| 50 | Dennis T. Shanahan | 9 | Son | — | Illinois |
Related Census Records
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)