MF
Mary Fitzgerald — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Fitzgerald across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 6-person household.
Age 63
b. ~1867
Female
Head
Born: Illinois
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Fitzgerald |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | 8000 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1867 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Johnston | Daughter | — | 26 | ~1904 |
| Mary Fitzgerald | Head | — | 63 | ~1867 |
| Doris Johnston | Other | — | 3 | ~1927 |
| David Johnston | Other | — | 23 | ~1907 |
| Richard Fitzgerald | Son | — | 35 | ~1895 |
| Matthew Fitzgerald | Son | — | 33 | ~1897 |
Census Appearances
1920
Cook, Illinois
Head, age 50
Cook, Illinois · implied b. ~1870 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 63
Cook, Illinois · implied b. ~1867 — 6 household members
| Surname | Fitzgerald |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | 8000 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Other, age 73
Cook-County, Illinois · implied b. ~1867 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | Mary |
| Relationship to Head | Sister in law |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 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 Fitzgerald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Fitzgerald
Head · 1930 · age 63 · b. ~1867 · 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:illinoiscensus00reel462:0817)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Marie Lynne | 12 | Daughter | — | Illinois |
| 52 | Catherine Lynne | 9 | Daughter | — | Illinois |
| 53 | Josephine Lynne | 7 | Daughter | — | Illinois |
| 54 | Daniel Lynne | 29 | Brother | Inspector | Ireland |
| 55 | Henry Stoessel | 51 | Head | Foreman | Germany |
| 56 | Anna Stoessel | 48 | Wife-H | — | Germany |
| 57 | Marie Stoessel | 22 | Daughter | Art Work | Germany |
| 58 | Henry Jr Stoessel | 20 | Son | — | Germany |
| 59 | Mary Fitzgerald THIS PERSON | 63 | Head | — | Illinois |
| 60 | Richard Fitzgerald | 35 | Son | Foreman | Illinois |
| 61 | Matthew Fitzgerald | 33 | Son | Salesman | Illinois |
| 62 | David Johnston | 23 | Son in law | Electrical Helper | England |
| 63 | Margaret Johnston | 26 | Daughter | — | Illinois |
| 64 | Doris M Johnston | 3 | Granddaughter | — | Illinois |
| 65 | Katherine Wooley | 66 | Head | — | Illinois |
| 66 | Margaret Wooley | 64 | Sister | Clerk | Illinois |
| 67 | Mary Stanton | 58 | Lodger | — | Illinois |
| 68 | Bernice Hoskins | 23 | Lodger | Secretary | Illinois |
| 69 | Alice Varnichoits | 49 | Head | — | Kansas |
| 70 | Harriett Varnichoits | 26 | Daughter | Stenographer | Illinois |
| 71 | George Varnichoits | 22 | Son | Statistician | Illinois |
| 72 | Frank Sanders | 43 | Brother | Inspector | Kansas |
| 73 | Edward Storms | 60 | Head | Adult Probation | New Jersey |
| 74 | Bessie M Storms | 56 | Wife-H | — | New York |
| 75 | Fred E Jones | 47 | Son in law | Manager | Wisconsin |
| 76 | Bessie L Jones | 39 | Daughter | Manager | Illinois |
| 77 | Wilma E Jones | 19 | Granddaughter | Stenographer | Illinois |
| 78 | Fred E Jr Jones | 17 | Grandson | Delivery Boy | Illinois |
| 79 | James Tassialls | 54 | Head | Baker | Greece |
| 80 | Fanny Tassialls | 42 | Wife-H | — | Greece |
| 81 | Stella Tassialls | 18 | Daughter | — | Illinois |
| 82 | Mary Tassialls | 17 | Daughter | — | Illinois |
| 83 | Fanny Tassialls | 11 | Daughter | — | Illinois |
| 84 | John Tassialls | 6 | Son | — | Illinois |
| 85 | Marion Tassialls | 4 | Daughter | — | Illinois |
| 86 | William Herbon | 65 | Head | Woodworker | Germany |
| 87 | Ottilli Herbon | 52 | Wife-H | — | Germany |
| 88 | Clara Herbon | 33 | Daughter | Asst Supt | Illinois |
| 89 | Martha Herbon | 31 | Daughter | Stenographer | Illinois |
| 90 | Earl Herbon | 27 | Son | Clerk | Illinois |
| 91 | Walter Diefner | 30 | Head | Tele Splicer | Missouri |
| 92 | Mathilda Diefner | 28 | Wife-H | — | Missouri |
| 93 | Walter C Diefner | 9 | Son | — | Missouri |
| 94 | Loretta Lamb | 17 | Neice | Operator | Missouri |
| 95 | Charles H Danielson | 53 | Head | Laborer | Sweden |
| 96 | Sarah Danielson | 58 | Wife-H | — | Sweden |
| 97 | Harold Eifert | 40 | Head | Draftsman | Indiana |
| 98 | Geneva Eifert | 40 | Sister-H | Bookkeeper | Indiana |
| 99 | Patrick O'Keefe | 45 | Head | Police | Ireland |
| 100 | Mary O'Keefe | 40 | Wife-H | — | Ireland |
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)