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Mary Mchugh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Will-County, Illinois
Our Model Tree links this Mary Mchugh across the 1930 and 1940 US Censuses in Will-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 8-person household.
Age 14
b. ~1926
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Will-County, Illinois |
| Surname | McHugh |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet city |
| 1935 Residence (County) | Will |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Joliet City |
| Est. Birth Year | ~1926 |
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 |
|---|---|---|---|---|
| Thomas Mchugh | Son | — | 17 | ~1923 |
| Mary Mchugh | Daughter | — | 14 | ~1926 |
| Richard Mchugh | Son | — | 3 | ~1937 |
| Raymond Mchugh | Head | — | 44 | ~1896 |
| James Mchugh | Son | — | 11 | ~1929 |
| Joan Mchugh | Daughter | — | 8 | ~1932 |
| Raymond Mchugh | Son | — | 15 | ~1925 |
| Vernita Mchugh | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Will, Illinois
Daughter, age 3
Will, Illinois · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McHugh |
| Given Name | Mary J. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| 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
Will-County, Illinois
Daughter, age 14
Will-County, Illinois · implied b. ~1926 — 8 household members
| Surname | McHugh |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet city |
| 1935 Residence (County) | Will |
| Class of Worker | 0 |
| Highest Grade | G 8 |
| 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 Mchugh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mchugh
Daughter · 1940 · age 14 · b. ~1926 · Illinois
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Sibling
James Mchugh
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Mchugh
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Mchugh
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Mchugh
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mchugh
Sibling · 1940 · age 17
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 — Will-County, Illinois
Open full size
1940 US Federal Census — Will-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00907-01060)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret M Reno | 19 | Niece | New Worker | Kansas |
| 2 | James V. Bartley | 48 | Head | Judge | Illinois |
| 3 | Frances M. Bartley | 47 | Wife | — | Illinois |
| 4 | James W. Bartley | 18 | Son | — | Illinois |
| 5 | Mary Frances Bartley | 17 | Daughter | — | Illinois |
| 6 | Nancy Bartley | 13 | Daughter | — | Illinois |
| 7 | William Nevin | 44 | Head | Industrial Engineer | Wisconsin |
| 8 | Mary Nevin | 34 | Wife | — | Illinois |
| 9 | Noel Nevin | 5 | Daughter | — | Illinois |
| 10 | Albert R. Clark | 28 | Head | Meter Reader | Illinois |
| 11 | Odette Clark | 25 | Wife | — | Illinois |
| 12 | Carol Lynn Clark | 2 | Daughter | — | Illinois |
| 13 | Wilmer Hinger | 34 | Head | Auditor | Illinois |
| 14 | Cecelia Hinger | 35 | Wife | — | Illinois |
| 15 | William Hinger | 2 | Son | — | Illinois |
| 16 | Mary Ellen Mchugh | 64 | Head | — | Illinois |
| 17 | Robert Mchugh | 44 | Son | Helper | Illinois |
| 18 | Loretta Mchugh | 41 | Daughter | Deputy Clerk | Illinois |
| 19 | John Sr. Lynch | 52 | Head | Grain Inspector | Illinois |
| 20 | John Jr. Lynch | 29 | Son | — | Iowa |
| 21 | Charles Henderson | 30 | Head | Manager | Illinois |
| 22 | Miriam Henderson | 30 | Wife | — | Illinois |
| 23 | Joseph D. Henneberry | 26 | Head | Salesman | Illinois |
| 24 | Elizabeth Henneberry | 22 | Wife | — | Illinois |
| 25 | Raymond Mchugh | 44 | Head | Salesman | Illinois |
| 26 | Vernita Mchugh | 40 | Wife | Clerk | Illinois |
| 27 | Thomas Mchugh | 17 | Son | — | Illinois |
| 28 | Mary Mchugh THIS PERSON | 14 | Daughter | — | Illinois |
| 29 | Raymond Mchugh | 15 | Son | — | Illinois |
| 30 | James Mchugh | 11 | Son | — | Illinois |
| 31 | Joan Mchugh | 8 | Daughter | — | Illinois |
| 32 | Richard Mchugh | 3 | Son | — | Illinois |
| 33 | Peter Hapa | 61 | Head | Janitor | Illinois |
| 34 | Lena Hapa | 56 | Wife | — | Illinois |
| 35 | Mayme Becher | 56 | Head | Dressmaker | Illinois |
| 36 | Mary E. Dantzs | 34 | Head | City Hostess | Illinois |
| 37 | Jacqueline Dantzs | 12 | Daughter | — | Illinois |
| 38 | John E. Chalstrom | 76 | Head | President | Sweden |
| 39 | Amanda L. Chalstrom | 62 | Wife | — | Sweden |
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)