MR
Mary Reardon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Tazewell-County, Illinois
Our Model Tree links this Mary Reardon across the 1930 and 1940 US Censuses in Tazewell-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Tazewell-County, Illinois |
| Surname | Reardon |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Pekin City |
| 1935 Residence (County) | Tazewell |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Pekin City |
| Est. Birth Year | ~1927 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Wynona Reardon | Spouse | — | 44 | ~1896 |
| Harold Reardon | Son | — | 29 | ~1911 |
| Paul Reardon | Son | — | 27 | ~1913 |
| Sharon Reardon | Daughter | — | 7 | ~1933 |
| Maurice Reardon | Head | — | 50 | ~1890 |
| Ronald Reardon | Son | — | 11 | ~1929 |
| William Reardon | Son | — | 25 | ~1915 |
| Mary Reardon | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Tazewell, Illinois
Daughter, age 3
Tazewell, Illinois · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Reardon |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Tazewell-County, Illinois
Daughter, age 13
Tazewell-County, Illinois · implied b. ~1927 — 8 household members
| Surname | Reardon |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Pekin City |
| 1935 Residence (County) | Tazewell |
| Highest Grade | 7 |
| 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 Reardon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Reardon
Daughter · 1940 · age 13 · b. ~1927 · Illinois
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Sibling
William Reardon
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sharon Reardon
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Reardon
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Reardon
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ronald Reardon
Sibling · 1940 · age 11
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 — Tazewell-County, Illinois
Open full size
1940 US Federal Census — Tazewell-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00895-00435)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Percy Deakin | 35 | Head | Galvanizer | England |
| 2 | Mary Deakin | 37 | Wife | — | Austria |
| 3 | Robert Deakin | 9 | Son | — | Illinois |
| 4 | Francis Turk | 19 | Step-daughter | New Worker | Illinois |
| 5 | Frank Turk | 17 | Step-son | — | Illinois |
| 6 | Robert L. Walker | 28 | Head | School Teacher | Illinois |
| 7 | Augusta Walker | 31 | Wife | — | Missouri |
| 8 | Bernadine Walker | 1 | Daughter | — | Illinois |
| 9 | Louis Hockler | 42 | Head | Proprietor Pharmacist | Illinois |
| 10 | Dorothy Hockler | 41 | Wife | — | Illinois |
| 11 | Maurice Reardon | 50 | Head | Car Inspector | Illinois |
| 12 | Wynona Reardon | 44 | Wife | — | Illinois |
| 13 | Harold Reardon | 29 | Son | — | Illinois |
| 14 | Paul Reardon | 27 | Son | Shoe Repairer | Missouri |
| 15 | William Reardon | 25 | Son | Screen Boy | Illinois |
| 16 | Mary Lou Reardon THIS PERSON | 13 | Daughter | — | Illinois |
| 17 | Ronald Reardon | 11 | Son | — | Illinois |
| 18 | Sharon R. Reardon | 7 | Daughter | — | Illinois |
| 19 | Clyde Portman | 40 | Head | Clerk | Illinois |
| 20 | Ruth Portman | 39 | Wife | — | Illinois |
| 21 | James Portman | 17 | Son | — | Illinois |
| 22 | Laura Earp | 33 | Niece | — | Illinois |
| 23 | Louise Earp | 8 | Grandniece | — | Illinois |
| 24 | Robert Earp | 6 | Grandnephew | — | Illinois |
| 25 | Agnes Hockler | 47 | Head | Proprietor Pharmacist | Illinois |
| 26 | Frances Hockler | 44 | Wife | — | Illinois |
| 27 | Marjorie Hockler | 16 | Daughter | — | Illinois |
| 28 | J. J. Smith | 54 | Head | Crane Operator | Illinois |
| 29 | Emma Smith | 60 | Wife | — | Illinois |
| 30 | John Frank | 21 | Son | New Worker | Illinois |
| 31 | Edward Clunz | 37 | Head | Asst Chief Clerk | Illinois |
| 32 | Louise Clunz | 34 | Wife | — | Illinois |
| 33 | James Clunz | 3 | Son | — | Illinois |
| 34 | Clifford Schmidgall | 28 | Head | Lawyer | Illinois |
| 35 | Mamie Schmidgall | 29 | Wife | — | Illinois |
| 36 | Carol Schmidgall | 1 | Daughter | — | Illinois |
| 37 | Chester Maven | 40 | Head | Bridge Leverman | Illinois |
| 38 | Garnet Maven | 38 | Wife | — | Illinois |
| 39 | Ralph Maven | 20 | Son | — | Illinois |
| 40 | Carol Maven | 12 | Daughter | — | Illinois |
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)