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Mary Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Macon-County, Illinois
Our Model Tree links this Mary Boyd across the 1920, 1930 and 1940 US Censuses in Macon-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Ida — first a daughter (b.~1892), then head of a 3-person household.
Age 48
b. ~1892
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Macon-County, Illinois |
| Surname | Boyd |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1690 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Teacher |
| Township / Ward | Decatur |
| Est. Birth Year | ~1892 |
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 |
|---|---|---|---|---|
| Grace Boyd | Daughter | — | 35 | ~1905 |
| Mary Boyd | Daughter | — | 48 | ~1892 |
| Ida Boyd | Spouse | — | 74 | ~1866 |
Census Appearances
1920
Macon, Illinois
Daughter, age 27
Macon, Illinois · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Ohio |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Macon, Illinois
Daughter, age 38
Macon, Illinois · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Ohio |
| Occupation | teacher |
| Industry | public school |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Macon-County, Illinois
Daughter, age 48
Macon-County, Illinois · implied b. ~1892 — 3 household members
| Surname | Boyd |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1690 |
| Highest Grade | C 3 |
| 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 Boyd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Boyd (~0.92 confidence) and mother Ida Boyd (~0.92 confidence) and mother Ida Boyd (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Boyd
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Ida Boyd
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Ida Boyd
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Boyd
Daughter · 1940 · age 48 · b. ~1892 · Illinois
★ You are viewing this record
Sibling
Grace Boyd
Sibling · 1940 · age 35
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 — Macon-County, Illinois
Open full size
1940 US Federal Census — Macon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00844-00208)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ida A. Boyd | 74 | Wife | — | Illinois |
| 42 | Mary Boyd THIS PERSON | 48 | Daughter | Teacher | Illinois |
| 43 | Grace Boyd | 35 | Daughter | Teacher | Illinois |
| 44 | Floyd Schoonover | 30 | Head | Ins. Salesman | North Dakota |
| 45 | Lucille Schoonover | 25 | Wife | — | Illinois |
| 46 | Lillian G. Martin | 71 | Head | — | Illinois |
| 47 | Ralph P. Martin | 40 | Son | Painter Paper | Illinois |
| 48 | Viola R. Boone | 37 | Head | Cook | Illinois |
| 49 | Everett D. Boone | 19 | Son | New Worker | Illinois |
| 50 | John L. Corde | 42 | Head | Maintenance Man | New York |
| 51 | Louise Korde | 25 | Wife | — | Virginia |
| 52 | Patsy Ann Korde | 5 | Daughter | — | Virginia |
| 53 | Mary Richard | 66 | Mother-in-law | — | Virginia |
| 54 | William Seaforth | 71 | Head | Blacksmith | Illinois |
| 55 | Emma Seaforth | 67 | Wife | — | Indiana |
| 56 | Marie Seaforth | 40 | Daughter | Cashier Bookkeeper | Illinois |
| 57 | Mildred Seaforth | 33 | Daughter | — | Illinois |
| 58 | Edwin L. Huntley | 31 | Head | Director Adult And Junior Dept | Illinois |
| 59 | Ruth Huntley | 30 | Wife | — | Minnesota |
| 60 | Ruthmary Huntley | 7 | Daughter | — | New Jersey |
| 61 | Kathlyne Huntley | 3 | Daughter | — | Illinois |
| 62 | Glenn F. Wineman | 34 | Head | Salesman | Illinois |
| 63 | Helen H. Wineman | 34 | Wife | — | Illinois |
| 64 | John H. Wineman | 7 | Son | — | Illinois |
| 65 | Helen Jane Wineman | 4 | Daughter | — | Illinois |
| 66 | Katherine Schlademan | 62 | Head | — | Illinois |
| 67 | Alicia S. Wagenfield | 36 | Daughter | Stenographer | Illinois |
| 68 | Robert C. Wagenfield | 11 | Grandson | — | Illinois |
| 69 | C. K. Teare | 32 | Head | Loan Dept | Illinois |
| 70 | Elizabeth Teare | 32 | Wife | — | Illinois |
| 71 | — | None | — | — | — |
| 72 | Ruth B. Walker | 52 | Head | Director | Illinois |
| 73 | Alice Biles | 46 | Housekeeper | Housekeeper | Tennessee |
| 74 | Edith Sherman | 49 | Cook | Cook | Illinois |
| 75 | — | None | — | — | — |
| 76 | Harry Pines | 40 | Head | Manager | Michigan |
| 77 | Clara Pines | 37 | Wife | — | Wisconsin |
| 78 | Marshall Pines | 9 | Son | — | Michigan |
| 79 | Herald Pines | 5 | Son | — | Illinois |
| 80 | Jerry M. Pines | 1 | Son | — | Illinois |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)