MK
Mary Kennedy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Mary Kennedy across the 1920, 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1880), then head of a 5-person household.
Age 60
b. ~1880
Female
Spouse
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Kennedy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Sangamon |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Springfield City |
| Est. Birth Year | ~1880 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jane Rogers | Daughter | — | 7 | ~1933 |
| Mary Rogers | Daughter | — | 4 | ~1936 |
| John Kennedy | Head | — | 58 | ~1882 |
| Jr Kennedy | Son | — | 24 | ~1916 |
| Mary Kennedy | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Sangamon, Illinois
Spouse, age 39
Sangamon, Illinois · implied b. ~1881 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1913 |
| Naturalization Status | Alien |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Sangamon, Illinois
Spouse, age 52
Sangamon, Illinois · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1915 |
| Age at First Marriage | 21 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Sangamon-County, Illinois
Spouse, age 60
Sangamon-County, Illinois · implied b. ~1880 — 5 household members
| Surname | Kennedy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Sangamon |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Kennedy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Kennedy
Spouse · 1940 · age 60 · b. ~1880 · 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 — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00885-00582)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy Coffin | 15 | Daughter | — | Illinois |
| 42 | Joseph Painter | 11 | Lodger | — | Illinois |
| 43 | Anton Doreski | 31 | Head | Truck Driver | Wisconsin |
| 44 | Anna Doreski | 31 | Wife | Sewing | Illinois |
| 45 | William Taylor | 36 | Head | Electrician | Illinois |
| 46 | Jean Helene Taylor | 33 | Wife | Janitor | Illinois |
| 47 | R. James Taylor | 66 | Father | — | Illinois |
| 48 | Daniel Taylor | 7 | Son | — | Illinois |
| 49 | Anton Gureski Sr. | 74 | Head | — | Poland |
| 50 | Blanche Gureski Sr. | 76 | Wife | — | Poland |
| 52 | James King | 63 | Head | Salesman | Indiana |
| 53 | Grace Rice | 51 | Head | — | Illinois |
| 54 | Janet Rice | 13 | Daughter | — | Illinois |
| 55 | Kelmer Jones | 45 | Head | Laborer | Illinois |
| 56 | Stella Jones | 43 | Wife | — | Illinois |
| 57 | George Schmidt | 73 | Head | — | Ohio |
| 58 | Charles Ward | 45 | Head | Laborer | Illinois |
| 59 | Nellie Ward | 49 | Wife | — | Illinois |
| 60 | Glenna Ward | 18 | Daughter | — | Illinois |
| 61 | Anna Snodgrass | 73 | Mother-in-law | — | Illinois |
| 64 | James Mitchell | 44 | Head | Cook | Illinois |
| 65 | Elsie Mitchell | 44 | Wife | — | Tennessee |
| 66 | K. Edgar Mitchell | 19 | Daughter | — | Illinois |
| 67 | John Kennedy | 58 | Head | Laborer | Scotland |
| 68 | Mary Kennedy THIS PERSON | 60 | Wife | — | Scotland |
| 69 | Jr. John Kennedy | 24 | Son | — | Illinois |
| 70 | Mary Rogers | 4 | Daughter | — | Illinois |
| 71 | Jane Rogers | 7 | Daughter | — | Illinois |
| 72 | James Mcfall | 23 | Head | Machinist | Illinois |
| 73 | Marcella Mcfall | 24 | Wife | — | Illinois |
| 74 | Jerry Lee | 4 | Son | — | Illinois |
| 75 | Harvey Stone | 31 | Head | Engineer | Illinois |
| 76 | Elizabeth Stone | 27 | Wife | — | Illinois |
| 77 | Elsie Stone | 8 | Daughter | — | Illinois |
| 78 | Joan Evelyn Stone | 6 | Daughter | — | Illinois |
| 79 | Ann Margaret Stone | 2 | Daughter | — | Illinois |
| 80 | Mae Ida Stone | 0 | 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)