MK
Mary Knox — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Rowan-County, North Carolina
Our Model Tree links this Mary Knox across the 1930 and 1940 US Censuses in Rowan-County, North Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Female
Daughter
Born: North Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rowan-County, North Carolina |
| Surname | Knox |
| Given Name | Mary Emma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | North Carolina |
| 1935 Residence (City) | Cleveland Township |
| 1935 Residence (County) | Rowan |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
| Township / Ward | Cleveland Township |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| John Knox | Son | — | 19 | ~1921 |
| David Knox | Son | — | 9 | ~1931 |
| Catherine Knox | Daughter | — | 12 | ~1928 |
| Mary Knox | Spouse | — | 52 | ~1888 |
| Robert Knox | Son | — | 25 | ~1915 |
| Lois Knox | Daughter | — | 15 | ~1925 |
| Mary Knox | Daughter | — | 21 | ~1919 |
| Robert Knox | Head | — | 68 | ~1872 |
Census Appearances
1930
Rowan, North …
Daughter, age 11
Rowan, North Carolina · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knox |
| Given Name | Mary E |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | North Carolina |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Can Read/Write | Yes |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1940
Rowan-County, North …
Daughter, age 21
Rowan-County, North Carolina · implied b. ~1919 — 8 household members
| Surname | Knox |
| Given Name | Mary Emma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | North Carolina |
| 1935 Residence (City) | Cleveland Township |
| 1935 Residence (County) | Rowan |
| Income (1939) | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
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 21 · b. ~1919 · North Carolina
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Sibling
John Knox
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Knox
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Knox
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Knox
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Knox
Sibling · 1940 · age 15
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 — Rowan-County, North Carolina
Open full size
1940 US Federal Census — Rowan-County, North Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02968-00544)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry Wm. Knox | 65 | Head | Janitor | North Carolina |
| 2 | Eva Jane Knox | 58 | Wife | — | North Carolina |
| 3 | Effie Hinton | 47 | Head | Laborer | South Carolina |
| 4 | Julia Hinton | 60 | Daughter | — | North Carolina |
| 5 | Robert Lee | 13 | Step grandson | — | North Carolina |
| 6 | Herman Lee | 11 | Step grandson | — | North Carolina |
| 7 | Eloise Lee | 8 | Step granddaughter | — | North Carolina |
| 8 | Ernestine Lee | 15 | Step granddaughter | — | North Carolina |
| 9 | Clother Lee | 4 | Step grandson | — | North Carolina |
| 10 | Clarence Miller | 31 | Head | Laborer At Quarry | North Carolina |
| 11 | Ada Miller | 19 | Wife | — | North Carolina |
| 12 | Jane Ellen Miller | 1 | Daughter | — | North Carolina |
| 13 | Casper Strickland | 23 | Head | Farmer | Georgia |
| 14 | Margaret Strickland | 19 | Wife | — | North Carolina |
| 15 | Oscar L. Patterson | 39 | Head | Tenant Farmer | North Carolina |
| 16 | Nellie F. Patterson | 35 | Wife | — | North Carolina |
| 17 | James Patterson | 12 | Son | — | North Carolina |
| 18 | Ollie May Patterson | 10 | Daughter | — | North Carolina |
| 19 | Scott Michl Patterson | 5 | Son | — | North Carolina |
| 20 | Oscar Jr. Patterson | 4 | Son | — | North Carolina |
| 21 | Howard Leon Patterson | 2 | Son | — | North Carolina |
| 22 | Benjamin F. Patterson | 0 | Son | — | North Carolina |
| 23 | Curtis Bonds | 43 | Head | Farmer | Georgia |
| 24 | Pearl Bonds | 38 | Wife | — | Georgia |
| 25 | Jimmie Bonds | 35 | Son | Farmer | Georgia |
| 26 | Hargrove Oakley | 39 | Head | Laborer | North Carolina |
| 27 | Mollie E. Oakley | 36 | Wife | — | North Carolina |
| 28 | Essie May Oakley | 15 | Daughter | — | North Carolina |
| 29 | Mary Frances Oakley | 12 | Daughter | — | North Carolina |
| 30 | Luke D. Dixon | 73 | Head | — | North Carolina |
| 31 | Henrietta Dixon | 63 | Wife | — | North Carolina |
| 32 | Fuller Carver | 52 | Head | Farmer | North Carolina |
| 33 | Robert H. Knox | 68 | Head | Farmer | North Carolina |
| 34 | Mary Emma Knox | 52 | Wife | — | North Carolina |
| 35 | Robert H. Jr. Knox | 25 | Son | Farmer | North Carolina |
| 36 | Mary Emma Knox THIS PERSON | 21 | Daughter | — | North Carolina |
| 37 | John Allen Knox | 19 | Son | Laborer | North Carolina |
| 38 | Lois Knox | 15 | Daughter | — | North Carolina |
| 39 | Catherine Knox | 12 | Daughter | — | North Carolina |
| 40 | David Clark Knox | 9 | Son | — | North Carolina |
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)