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Mary Whalen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Morgan-County, Illinois
Our Model Tree links this Mary Whalen across the 1930 and 1940 US Censuses in Morgan-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 6-person household.
Age 16
b. ~1924
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Morgan-County, Illinois |
| Surname | Whalen |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Franklin Township |
| 1935 Residence (County) | Morgan |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Franklin Township |
| Est. Birth Year | ~1924 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Annie Whalen | Daughter | — | 14 | ~1926 |
| Mary Whalen | Daughter | — | 16 | ~1924 |
| Dennis Whalen | Head | — | 63 | ~1877 |
| Daniel Whalen | Son | — | 7 | ~1933 |
| Joseph Whalen | Son | — | 12 | ~1928 |
| Mary Whalen | Spouse | — | 49 | ~1891 |
Census Appearances
1930
Morgan, Illinois
Daughter, age 6
Morgan, Illinois · implied b. ~1924 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Whalen |
| Given Name | Mary M |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Morgan-County, Illinois
Daughter, age 16
Morgan-County, Illinois · implied b. ~1924 — 6 household members
| Surname | Whalen |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Franklin Township |
| 1935 Residence (County) | Morgan |
| Highest Grade | H 2 |
| 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 Whalen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Whalen
Daughter · 1940 · age 16 · b. ~1924 · Illinois
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Sibling
Annie Whalen
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Whalen
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Whalen
Sibling · 1940 · age 7
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 — Morgan-County, Illinois
Open full size
1940 US Federal Census — Morgan-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00861-00129)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Virgil Knifley | 55 | Head | Farmer | Kentucky |
| 42 | Betty F. Knifley | 55 | Wife | — | Kentucky |
| 43 | Lotus R. Knifley | 34 | Son | Farmer | Kentucky |
| 44 | Edward D. Scott | 69 | Head | Farmer | Illinois |
| 45 | Anna M. Scott | 64 | Wife | — | Illinois |
| 46 | Gilbert S. Hassler | 10 | Nephew | — | Illinois |
| 47 | Calvin L. Kelley | 24 | Hired hand | Farm Hand | Illinois |
| 48 | Oscar H. Norman | 37 | Head | Road Patrol Man | Illinois |
| 49 | Florence Norman | 47 | Wife | — | Illinois |
| 50 | Katherine Scott | 79 | Mother-in-law | — | Illinois |
| 51 | Dennis Whalen | 63 | Head | Farmer | Illinois |
| 52 | Mary R. Whalen | 49 | Wife | — | Illinois |
| 53 | Mary M. Whalen THIS PERSON | 16 | Daughter | — | Illinois |
| 54 | Annie R. Whalen | 14 | Daughter | — | Illinois |
| 55 | Joseph M. Whalen | 12 | Son | — | Illinois |
| 56 | Daniel A. Whalen | 7 | Son | — | Illinois |
| 57 | Lurinia K. Scott | 70 | Head | — | Illinois |
| 58 | Myra Schupp | 47 | Daughter | — | Missouri |
| 59 | Juanita S. Scott | 37 | Daughter | Teacher | Illinois |
| 60 | Howard E. Scott | 32 | Son | Farmer | Illinois |
| 61 | W. Milford Rees | 46 | Head | Farmer | Illinois |
| 62 | Velta M. Rees | 45 | Wife | — | Illinois |
| 63 | Margaret Rees | 21 | Daughter | Stenographer | Illinois |
| 64 | William M. Rees | 16 | Son | — | Illinois |
| 65 | Albert H. Yanker | 64 | Head | Laborer | Illinois |
| 66 | J. Oris Ralston | 59 | Head | Merchant | Illinois |
| 67 | Lucy B. Ralston | 60 | Wife | — | Illinois |
| 68 | Emelyn R. Ralston | 22 | Daughter | Clerk | Illinois |
| 69 | Carl A. Rawlings | 42 | Head | Mechanic | Illinois |
| 70 | Alice E. Rawlings | 34 | Wife | — | Illinois |
| 71 | A. Louise Rawlings | 15 | Daughter | — | Illinois |
| 72 | David E. Rawlings | 13 | Son | — | Illinois |
| 73 | Harry E. Rawlings | 10 | Son | — | Illinois |
| 74 | Mary E. Rawlings | 8 | Daughter | — | Illinois |
| 75 | Florence A. Rawlings | 7 | Daughter | — | Illinois |
| 76 | Anna K. Rawlings | 3 | Daughter | — | Illinois |
| 77 | Harry S. Butcher | 52 | Head | Farmer | Illinois |
| 78 | Anna E. Butcher | 56 | Wife | — | Illinois |
| 79 | Norman Butcher | 19 | Son | Farm Hand | Illinois |
Related Census Records
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)