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Mary Boyd — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Champaign-County, Illinois
Our Model Tree links this Mary Boyd across the 1920, 1930 and 1940 US Censuses in Champaign-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 8-person household.
Age 44
b. ~1896
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Champaign-County, Illinois |
| Surname | Boyd |
| Given Name | Mary E. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Urbana City |
| 1935 Residence (County) | Champaign |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 8 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Urbana City |
| Est. Birth Year | ~1896 |
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 |
|---|---|---|---|---|
| Mary Caldwell | Daughter | — | 22 | ~1918 |
| Bette Boyd | Daughter | — | 18 | ~1922 |
| George Boyd | Head | — | 47 | ~1893 |
| Sharon Caldwell | Other | — | ~1940 | |
| Nancy Caldwell | Other | — | 2 | ~1938 |
| Richard Boyd | Son | — | 6 | ~1934 |
| John Boyd | Son | — | 20 | ~1920 |
| Mary Boyd | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Champaign, Illinois
Other, age 25
Champaign, Illinois · implied b. ~1895 — 14 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Mary |
| Relationship to Head | Roomer |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Champaign, Illinois
Other, age 34
Champaign, Illinois · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Mary |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Champaign-County, Illinois
Spouse, age 44
Champaign-County, Illinois · implied b. ~1896 — 8 household members
| Surname | Boyd |
| Given Name | Mary E. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Urbana City |
| 1935 Residence (County) | Champaign |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 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 Boyd 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 Boyd
Spouse · 1940 · age 44 · b. ~1896 · 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 — Champaign-County, Illinois
Open full size
1940 US Federal Census — Champaign-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00765-00930)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ellen E. Long | 24 | wife | — | Illinois |
| 2 | Robert D. Long | 4 | son | — | Illinois |
| 3 | Roger W. Long | 1 | son | — | Illinois |
| 4 | Royal J. W. Rankin | 59 | father-in-law | Grocery | Illinois |
| 5 | Allen J. Dailey | 51 | head | Building | Illinois |
| 6 | Ethel E. Dailey | 49 | wife | — | Illinois |
| 7 | Hazel L. Dailey | 25 | daughter | — | Illinois |
| 8 | Robert A. Dailey | 21 | son | Grocery | Illinois |
| 9 | Donald E. James | 48 | head | School | Illinois |
| 10 | Ruby A. James | 44 | wife | Cafeteria | Illinois |
| 11 | Gerald A. James | 26 | son | National Guard | Illinois |
| 12 | Harold M. James | 21 | son | Clothing Store | Illinois |
| 13 | Vera V. James | 22 | daughter | — | Illinois |
| 14 | Donald Wm. James | 0 | grandson | — | Illinois |
| 15 | George A. Boyd | 47 | head | Auto | Illinois |
| 16 | Mary E. Boyd THIS PERSON | 44 | wife | — | Illinois |
| 17 | John Robert Boyd | 20 | son | Engineering | Illinois |
| 18 | Bette E. Boyd | 18 | daughter | Retail 10¢ Store | Illinois |
| 19 | Richard Boyd | 6 | son | — | Illinois |
| 20 | Mary Ellen Caldwell | 22 | daughter | Dressmaking | Illinois |
| 21 | Nancy C. Caldwell | 2 | granddaughter | — | Missouri |
| 22 | Sharon Lee Caldwell | 0 | granddaughter | — | Illinois |
| 23 | Glenn Thompson | 23 | head | Building Construction | Illinois |
| 24 | Vera M. Thompson | 22 | wife | Laundry | Illinois |
| 25 | Francis M. Butler | 33 | lodger | Baking | Illinois |
| 26 | Wilma G. Butler | 30 | wife | Baking | Illinois |
| 27 | Harold Wayne Butler | 12 | son | — | Illinois |
| 28 | Theodore Werling | 23 | lodger | Retail Chain | Illinois |
| 29 | Alice C. Burnes | 77 | head | — | Illinois |
| 30 | Richard Burnes Wagner | 18 | grandson | — | Illinois |
| 31 | Catherine R. Ottley | 64 | head | — | Illinois |
| 32 | Raymond W. Ottley | 32 | son | Wholesale Groc | Illinois |
| 33 | Hannah M. Ferris | 87 | mother | — | Pennsylvania |
| 34 | Margaret M. Wiltz | 54 | sister | — | Illinois |
| 35 | Ernest R. Wiltz | 23 | nephew | Engineering Dept. | Illinois |
| 36 | Richard Crist | 49 | head | Univ. Of Ill. | New York |
| 37 | Buell M. Spanhook | 25 | head | Beauty Salon | Illinois |
| 38 | Juanita M. Spanhook | 23 | wife | Beauty Salon | Illinois |
| 39 | Nellie Mae Hays | 39 | head | Ill. - Iowa Power | 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)