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Mary Bartlett — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Illinois
Our Model Tree links this Mary Bartlett across the 1920, 1930 and 1940 US Censuses in Boone-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 3-person household.
Age 56
b. ~1884
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Illinois |
| Surname | Bartlett |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Belvidere City |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Belvidere City |
| Est. Birth Year | ~1884 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Charles Home | Other | — | 20 | ~1920 |
| Alonzo Bartlett | Son | — | 26 | ~1914 |
| Mary Bartlett | Head | — | 56 | ~1884 |
Census Appearances
1920
Boone, Illinois
Spouse, age 36
Boone, Illinois · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bartlet |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| 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
Boone, Illinois
Spouse, age 46
Boone, Illinois · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bartlett |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 28 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Boone-County, Illinois
Head, age 56
Boone-County, Illinois · implied b. ~1884 — 3 household members
| Surname | Bartlett |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Belvidere City |
| 1935 Residence (County) | Boone |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Bartlett 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 Bartlett
Head · 1940 · age 56 · b. ~1884 · 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 — Boone-County, Illinois
Open full size
1940 US Federal Census — Boone-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00760-00017)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cornelius Dwyer | 76 | Head | — | Ireland |
| 42 | Alice M. Dwyer | 71 | Wife | — | Ireland |
| 43 | Desmond T. Dwyer | 31 | Son | Secy And Treasurer | Illinois |
| 44 | George Maw | 40 | Head | Book-Keeper | Illinois |
| 45 | Elvera Maw | 38 | Wife | — | Illinois |
| 46 | Diane Maw | 12 | Daughter | — | Illinois |
| 47 | Vivien Maw | 1 | Daughter | — | Illinois |
| 48 | Robert J. Dowling | 67 | Head | Retired | Wisconsin |
| 49 | Sarah E. Dowling | 55 | Wife | — | Michigan |
| 50 | Lawrence R. Dowling | 16 | Son | — | Illinois |
| 51 | Orville A. Torr | 46 | Head | Auto Mechanic | Kansas |
| 52 | Mary E. Torr | 46 | Wife | — | Nebraska |
| 53 | Anna Hutchins | 78 | Mother-in-law | Paper Carrier | Harvard |
| 54 | John William Hutchins | 25 | Step-son | — | Illinois |
| 55 | Kenneth A. Torr | 12 | Son | — | Iowa |
| 56 | Mary A. Bartlett THIS PERSON | 56 | Head | — | Illinois |
| 57 | Alonzo W. Bartlett | 26 | Son | Laborer | Illinois |
| 58 | Charles Home | 20 | Roomer | Clerk | — |
| 59 | Maude Fulkerson | 59 | Head | — | Wisconsin |
| 60 | Constance Fulkerson | 32 | Daughter | School Teacher | Wisconsin |
| 61 | Mildreth Hewitt | 44 | Head | Assistant Cashier | Illinois |
| 62 | Margaret Frazier | 63 | Sister | — | Illinois |
| 63 | Fern M. Smith | 19 | — | House-Work | Illinois |
| 64 | Ronald S. Manley | 30 | Head | Automobile Mechanic | Illinois |
| 65 | Pauline Manley | 26 | Wife | — | Illinois |
| 66 | Jack R. Manley | 1 | Son | — | Illinois |
| 67 | Edward Whitehead | 31 | Head | Machinist | Illinois |
| 68 | Maxine E. Whitehead | 28 | Wife | — | Illinois |
| 69 | Margaret O'Donnell | 42 | Head | Home Economist | Illinois |
| 70 | John O'Donnell | 18 | Son | Office Work | Illinois |
| 71 | Robert O'Donnell | 14 | Son | — | Illinois |
| 72 | Edward B. Mcneal | 77 | Head | — | Illinois |
| 73 | Fannie S. Mcneal | 69 | Wife | — | Illinois |
| 74 | Luther Lane | 91 | Lodger | — | Illinois |
| 75 | John E. Bruce | 42 | Head | Dentist | Wisconsin |
| 76 | Gertrude M. Bruce | 40 | Wife | — | Wisconsin |
| 77 | Barbara E. Bruce | 11 | Daughter | — | Illinois |
| 78 | Sandra L. Bruce | 4 | Daughter | — | Illinois |
| 79 | Joseph Kelton | 38 | Head | Manager | Russia |
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)