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Mary Byrd — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Knox-County, Indiana
Our Model Tree links this Mary Byrd across the 1930 and 1940 US Censuses in Knox-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Indiana |
| Surname | Byrd |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | VINCENNES CITY |
| 1935 Residence (County) | KNOX |
| Additional Details | |
| Highest Grade | Yes 7 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Vincennes City |
| Est. Birth Year | ~1926 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Byrd | Son | — | 11 | ~1929 |
| Richard Byrd | Son | — | 3 | ~1937 |
| Winifred Byrd | Spouse | — | 48 | ~1892 |
| Orville Byrd | Head | — | 54 | ~1886 |
| Linda Byrd | Daughter | — | 1 | ~1939 |
| James Byrd | Son | — | 16 | ~1924 |
| John Byrd | Son | — | 23 | ~1917 |
| Mary Byrd | Daughter | — | 14 | ~1926 |
| Katherine Byrd | Daughter | — | 24 | ~1916 |
Census Appearances
1930
Knox, Indiana
Daughter, age 4
Knox, Indiana · implied b. ~1926 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Byrd |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Kentucky |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Knox-County, Indiana
Daughter, age 14
Knox-County, Indiana · implied b. ~1926 — 9 household members
| Surname | Byrd |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | VINCENNES CITY |
| 1935 Residence (County) | KNOX |
| Highest Grade | Yes 7 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Byrd across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Byrd
Daughter · 1940 · age 14 · b. ~1926 · Indiana
★ You are viewing this record
Sibling
James Byrd
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Byrd
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Byrd
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Linda Byrd
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Byrd
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Byrd
Sibling · 1940 · age 24
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 — Knox-County, Indiana
Open full size
1940 US Federal Census — Knox-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01061-00231)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George F. Barksdale | 28 | Head | Laborer | Indiana |
| 42 | Robert R. Barksdale | 24 | Son | Truck Driver | Indiana |
| 43 | Beverly Mae Barksdale | 21 | Daughter | Housework | Indiana |
| 44 | Paul Barksdale | 12 | Son | — | Indiana |
| 45 | Margaret Barksdale | 10 | Daughter | — | Indiana |
| 46 | Otto Speth | 40 | Head | Laborer | Indiana |
| 47 | Thelma Speth | 33 | Wife | — | Indiana |
| 48 | Walter Speth | 12 | Son | — | Indiana |
| 49 | Emery Speth | 11 | Son | — | Indiana |
| 50 | Robert Speth | 9 | Son | Helper | Indiana |
| 51 | Anna Speth | 7 | Daughter | — | Illinois |
| 52 | Charles W. Pierson | 68 | Head | Finisher Of Cement | Indiana |
| 53 | Vida Pierson | 53 | Wife | — | Indiana |
| 54 | Robert E. Pierson | 19 | Son | — | Indiana |
| 55 | Margie Pierson | 18 | Daughter | Housekeeper | Indiana |
| 56 | Clarence Barrett | 26 | Head | Helper | Indiana |
| 57 | Eloise Barrett | 26 | Wife | — | Indiana |
| 58 | Veronica Ann Barrett | 4 | Daughter | — | Indiana |
| 59 | Orville Byrd | 54 | Head | Cement Finisher | Illinois |
| 60 | Winifred Byrd | 48 | Wife | — | Kentucky |
| 61 | Katherine Byrd | 24 | Daughter | Housework | Indiana |
| 62 | John Byrd | 23 | Son | Laborer | Indiana |
| 63 | James Byrd | 16 | Son | — | Indiana |
| 64 | Mary Byrd THIS PERSON | 14 | Daughter | — | Indiana |
| 65 | William Byrd | 11 | Son | — | Indiana |
| 66 | Richard E. Byrd | 3 | Son | — | Indiana |
| 67 | Linda Byrd | 1 | Daughter | — | Indiana |
| 68 | Thomas Sullivan | 53 | Head | Laborer | Kentucky |
| 69 | Louise Sullivan | 44 | Wife | — | Indiana |
| 70 | Roy Sullivan | 20 | Son | Laborer | Indiana |
| 71 | Betty Sullivan | 18 | Daughter | — | Indiana |
| 72 | Lawrence Sullivan | 16 | Son | — | Indiana |
| 73 | Thomas Sullivan | 14 | Son | — | Indiana |
| 74 | Clifford Sullivan | 12 | Son | — | Indiana |
| 75 | Claude Sullivan | 8 | Son | — | Indiana |
| 76 | Donald Sullivan | 4 | Son | — | Indiana |
| 77 | Grover C. Grider | 56 | Head | Laborer | Indiana |
| 78 | Pearl Poston | 45 | Housekeeper | — | Indiana |
| 79 | Grover E. Grider | 26 | Son | Laborer | Indiana |
| 80 | Bertie Jones | 52 | Head | Feed Mixer | 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)