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Margaret Mcnamara — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Will-County, Illinois
Our Model Tree links this Margaret Mcnamara across the 1920, 1930 and 1940 US Censuses in Will-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 6-person household.
Age 57
b. ~1883
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Will-County, Illinois |
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet City |
| 1935 Residence (County) | Will |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Joliet City |
| Est. Birth Year | ~1883 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Bernard Mcnamara | Son | — | 17 | ~1923 |
| Mary Brein | Other | — | 82 | ~1858 |
| Thomas Mcnamara | Son | — | 16 | ~1924 |
| Nola Mcnamara | Daughter | — | 21 | ~1919 |
| Margaret Mcnamara | Head | — | 57 | ~1883 |
| William Mcnamara | Son | — | 20 | ~1920 |
Census Appearances
1920
Will, Illinois
Spouse, age 38
Will, Illinois · implied b. ~1882 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| 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
Will, Illinois
Spouse, age 46
Will, Illinois · implied b. ~1884 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 18 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Will-County, Illinois
Head, age 57
Will-County, Illinois · implied b. ~1883 — 6 household members
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet City |
| 1935 Residence (County) | Will |
| Highest Grade | No 5 |
| 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 Margaret Mcnamara across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Mcnamara
Head · 1940 · age 57 · b. ~1883 · Illinois
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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-t0627-00907-00879)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy Whitman | 52 | — | — | Illinois |
| 42 | William Whitman | 32 | Head | Lineman | Illinois |
| 43 | Jean Whitman | 28 | Wife | — | Illinois |
| 44 | William Whitman | 11 | Son | — | Illinois |
| 45 | James Whitman | 10 | Son | — | Illinois |
| 46 | Melvin Nohl | 23 | Head | Automobile | Illinois |
| 47 | Hilda Nohl | 23 | Wife | Saleslady | South Dakota |
| 48 | Virgil Nohl | 22 | Brother | Farm Laborer | Illinois |
| 49 | Frank J. Gabrys | 42 | Head | Engineer | Illinois |
| 50 | Pauline Gabrys | 40 | Wife | — | Illinois |
| 51 | Margaret Gabrys | 15 | Daughter | — | Illinois |
| 52 | Frederick Gabrys | 13 | Son | — | Illinois |
| 53 | Cecil Gabrys | 13 | Son | — | Illinois |
| 54 | Richard Gabrys | 12 | Son | — | Illinois |
| 56 | John Gudvick | 39 | Head | Carpenter | Illinois |
| 57 | Josephine Gudvick | 37 | Wife | Bookkeeper | Illinois |
| 58 | Richard Gudvick | 11 | Son | — | Illinois |
| 59 | Margaret Mcnamara THIS PERSON | 57 | Head | — | Illinois |
| 60 | Nola Mcnamara | 21 | Daughter | Office Work | Illinois |
| 61 | William Mcnamara | 20 | Son | Machinist | Illinois |
| 62 | Bernard Mcnamara | 17 | Son | New Worker | Illinois |
| 63 | Thomas Mcnamara | 16 | Son | — | Illinois |
| 64 | Mary Brein | 82 | Mother | — | Illinois |
| 65 | Alfred Broad | 58 | Head | — | Illinois |
| 66 | Elizabeth Broad | 57 | Wife | — | Illinois |
| 67 | William Broad | 23 | Son | Lamp Man | Illinois |
| 68 | Jennie Christy | 43 | Head | Operator | Illinois |
| 69 | Chester Christy | 40 | Brother | Clerk | Illinois |
| 70 | Holger Hansen | 33 | Head | Rigger | Denmark |
| 71 | Lillian Hansen | 29 | Wife | — | Poland |
| 72 | Hulda Johnson | 72 | Head | — | Sweden |
| 73 | Fred Damborino | 37 | Head | Laborer | Illinois |
| 74 | Irene Damborino | 46 | Wife | — | Illinois |
| 75 | Iva Mcgee | 44 | Sister-in-law | Maid | Illinois |
| 76 | George Mcgee | 11 | Nephew | — | Illinois |
| 77 | John Buckley | 50 | Head | Boiler Maker | Idaho |
| 78 | Ellen Buckley | 44 | Wife | — | Illinois |
| 79 | Earl Buckley | 8 | Son | Planter | Illinois |
| 80 | Shirley Buckley | 8 | Daughter | — | 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)