MF
Mary Fitzgerald — 1940 US Census Record
Model Tree available1940 United States Federal Census · Champaign-County, Illinois
Our Model Tree links this Mary Fitzgerald across the 1920, 1930 and 1940 US Censuses in Champaign-County, Illinois (XGBoost, ~Confirmed), with identified parents James & Fannie — first a daughter (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Champaign-County, Illinois |
| Surname | Fitzgerald |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Champaign City |
| 1935 Residence (County) | Champaign |
| Additional Details | |
| Occupation | Secretary |
| Industry | Motor Club |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 936 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Secretary |
| Township / Ward | Champaign City |
| Est. Birth Year | ~1912 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ruth Fitzgerald | Daughter | — | 27 | ~1913 |
| Mary Fitzgerald | Daughter | — | 28 | ~1912 |
| Fannie Fitzgerald | Head | — | 48 | ~1892 |
Census Appearances
1920
Champaign, Illinois
Daughter, age 7
Champaign, Illinois · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Champaign, Illinois
Daughter, age 18
Champaign, Illinois · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Champaign-County, Illinois
Daughter, age 28
Champaign-County, Illinois · implied b. ~1912 — 3 household members
| Surname | Fitzgerald |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Champaign City |
| 1935 Residence (County) | Champaign |
| Occupation | Secretary |
| Industry | Motor Club |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 936 |
| 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. Identified parents: father James Fitzgerald (~0.92 confidence) and mother Fannie Fitzgerald (~0.92 confidence) and mother Frances Fitzgerald (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Fitzgerald
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Fannie Fitzgerald
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Frances Fitzgerald
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Fitzgerald
Daughter · 1940 · age 28 · b. ~1912 · Illinois
★ You are viewing this record
Sibling
Ruth Fitzgerald
Sibling · 1940 · age 27
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
1940 US Federal Census — Champaign-County, Illinois
Open full size
1940 US Federal Census — Champaign-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00765-00677)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Layton Farrell | 48 | Head | Manager | Michigan |
| 2 | Mabel Farrell | 44 | Wife | — | Ohio |
| 3 | Evelyn Farrell | 19 | Daughter | — | Ohio |
| 4 | Layton Jr. Farrell | 15 | Son | — | Ohio |
| 5 | Eugene Nightingale | 44 | Head | Civil Engineer | Illinois |
| 6 | Mary Nightingale | 42 | Wife | — | Kentucky |
| 7 | Richard Nightingale | 17 | Son | — | Illinois |
| 8 | David Nightingale | 10 | Son | — | Illinois |
| 9 | Lewis Tanner | 30 | Head | Pressman | Illinois |
| 10 | Velma Tanner | 21 | Wife | — | Illinois |
| 11 | Thomas Tanner | 1 | Son | — | Illinois |
| 12 | Fannie Fitzgerald | 48 | Head | — | Illinois |
| 13 | Mary E. Fitzgerald THIS PERSON | 28 | Daughter | Secretary | Illinois |
| 14 | Ruth Fitzgerald | 27 | Daughter | Registered Nurse | Illinois |
| 15 | Billy Canad | 31 | Head | Decorator | Indiana |
| 16 | Beatrice Canad | 55 | Wife | — | Indiana |
| 17 | Eugene Canad | 31 | Son | Decorator | Indiana |
| 18 | Anna Hoskins | 75 | Mother-in-law | — | Indiana |
| 19 | Nellie Carson | 70 | Head | — | Illinois |
| 20 | Joseph P. Myers | 36 | Head | Clerk | Illinois |
| 21 | Wilhelmina Myers | 40 | Wife | — | Illinois |
| 22 | Aran V. Myers | 18 | Son | — | Illinois |
| 23 | Paul E. Myers | 15 | Son | — | Illinois |
| 24 | Carl Frey | 49 | Head | Psychologist | Illinois |
| 25 | Hazel Frey | 46 | Wife | — | Illinois |
| 26 | Beverly Frey | 14 | Daughter | — | Illinois |
| 27 | Ferd. Brand | 44 | Brother-in-law | Secretary | Illinois |
| 28 | Leona Faker | 77 | Head | — | Kentucky |
| 29 | Kate Faker | 74 | Wife | — | Illinois |
| 30 | P. L. Mansteller | 64 | Head | — | Illinois |
| 31 | Minnie Mansteller | 60 | Wife | Pastry Cook | Germany |
| 32 | William J. Warren | 29 | Head | Baker | California |
| 33 | Annette Warren | 28 | Wife | — | Illinois |
| 34 | Letitia Warren | 1 | Daughter | — | New York |
| 35 | Anthony Gorman | 48 | Head | Trainmaster | Illinois |
| 36 | Genevieve Gorman | 44 | Wife | — | Illinois |
| 37 | Helen Gorman | 17 | Daughter | — | Illinois |
| 38 | Ruth Gorman | 12 | Daughter | — | Illinois |
| 39 | Mary Carrier | 66 | Mother-in-law | — | Illinois |
| 40 | Leona Ottenberger | 40 | Head | Bookkeeper | Illinois |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)