MK
Mary Knox — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Williamson-County, Texas
Our Model Tree links this Mary Knox across the 1930 and 1940 US Censuses in Williamson-County, Texas (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Female
Daughter
Born: Texas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Williamson-County, Texas |
| Surname | Knox |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Taylor City |
| 1935 Residence (County) | Williamson |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same House |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Township / Ward | Taylor City |
| Est. Birth Year | ~1925 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Knox | Daughter | — | 15 | ~1925 |
| Wallace Knox | Son | — | 15 | ~1925 |
| Willie Knox | Spouse | — | 36 | ~1904 |
| Dan Knox | Son | — | 10 | ~1930 |
| Raymond Knox | Head | — | 41 | ~1899 |
| Ruby Knox | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Williamson, Texas
Other, age 5
Williamson, Texas · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knox |
| Given Name | Mary L. |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Williamson-County, Texas
Daughter, age 15
Williamson-County, Texas · implied b. ~1925 — 6 household members
| Surname | Knox |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Taylor City |
| 1935 Residence (County) | Williamson |
| Hours Worked | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same House |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 Knox across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Knox
Daughter · 1940 · age 15 · b. ~1925 · Texas
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Sibling
Wallace Knox
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dan Knox
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruby Knox
Sibling · 1940 · age 12
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 — Williamson-County, Texas
Open full size
1940 US Federal Census — Williamson-County, Texas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04166-00566)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emil Kaatz | 46 | Head | Cement Worker | Texas |
| 2 | Vena Kaatz | 45 | Wife | — | Texas |
| 3 | Harry Kaatz | 18 | Son | Dairy Milker | Texas |
| 4 | Lillie Kaatz | 16 | Daughter | — | Texas |
| 5 | Norman Kaatz | 9 | Son | — | Texas |
| 6 | August Sefcik | 40 | Head | Cement Worker | Texas |
| 7 | Vinnie Sefcik | 41 | Wife | — | Texas |
| 8 | Alfon Sefcik | 22 | Son | Dairy Milker | Texas |
| 9 | Lillie Sefcik | 15 | Daughter | Housework | Texas |
| 10 | Raymond Sefcik | 17 | Son | Office Boy | Texas |
| 11 | Raymond Knox | 41 | Head | Truck Driver | Texas |
| 12 | Willie Knox | 36 | Wife | — | Texas |
| 13 | Wallace Knox | 15 | Son | Miscellaneous Duties | Texas |
| 14 | Mary L. Knox THIS PERSON | 15 | Daughter | — | Texas |
| 15 | Ruby N. Knox | 12 | Daughter | — | Texas |
| 16 | Dan P. Knox | 10 | Son | — | Texas |
| 17 | Walter Scheer | 21 | Head | Mechanic | Texas |
| 18 | Elvira Scheer | 18 | Wife | — | Texas |
| 19 | Edward F. Raven | 30 | Head | Attendant | Texas |
| 20 | Eda Raven | 28 | Wife | — | Texas |
| 21 | Yvonne Raven | 7 | Daughter | — | Texas |
| 22 | Regena Grain | 70 | Head | — | Texas |
| 23 | Willie Pavlica | 30 | Head | Laborer | Texas |
| 24 | Lillie Pavlica | 33 | Wife | — | Texas |
| 25 | Helen Stasny | 13 | Daughter | — | Texas |
| 26 | Mary Bolf | 56 | Mother-in-law | — | Texas |
| 27 | Louisa Marek | 56 | Head | — | Czechoslovakia |
| 28 | Louie Marek | 32 | Daughter | Repairing Harness | Texas |
| 29 | Frank Mikuluc | 66 | Head | — | Texas |
| 30 | Albert Knubluk | 25 | Son | Construction Work | Texas |
| 31 | Minnie Jensen | 70 | Head | — | Denmark |
| 32 | Robert Lee Jr. Carter | 29 | Head | Construction Crew | Texas |
| 33 | Marie R. Carter | 31 | Wife | — | Texas |
| 34 | Robert Lee Iii Carter | 2 | Son | — | Texas |
| 35 | Emma Wright | 66 | Head | — | Texas |
| 36 | Joe Debus | 53 | Head | Farmer | Germany |
| 37 | Augusta Debus | 53 | Wife | — | Texas |
| 38 | Marie Debus | 27 | Daughter | — | Texas |
| 39 | Joseph Debus | 22 | Son | Farmer'S Help | Texas |
| 40 | Richard Betz | 26 | Head | Laborer | Texas |
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)