MK
Mary Knox — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Orleans-County, Louisiana
Our Model Tree links this Mary Knox across the 1930 and 1940 US Censuses in Orleans-County, Louisiana (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 11-person household.
Age 12
b. ~1928
Female
Daughter
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Orleans-County, Louisiana |
| Surname | Knox |
| Given Name | Mary Agnes |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| 1935 Residence (County) | Orleans |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Township / Ward | New Orleans City |
| Est. Birth Year | ~1928 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Marcia Knox | Daughter | — | 6 | ~1934 |
| Thomas Knox | Head | — | 52 | ~1888 |
| Mary Knox | Daughter | — | 12 | ~1928 |
| Adelaide Knox | Daughter | — | 16 | ~1924 |
| Selma Knox | Daughter | — | 13 | ~1927 |
| Aileen Knox | Other | — | 42 | ~1898 |
| Thomas Knox | Son | — | 14 | ~1926 |
| Edna Knox | Daughter | — | 9 | ~1931 |
| Esther Knox | Daughter | — | 18 | ~1922 |
| Selma Knox | Spouse | — | 47 | ~1893 |
| Frederick Knox | Son | — | 15 | ~1925 |
Census Appearances
1930
Orleans, Louisiana
Daughter, age 3
Orleans, Louisiana · implied b. ~1927 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knox |
| Given Name | Mary Rose |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Louisiana |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Orleans-County, Louisiana
Daughter, age 12
Orleans-County, Louisiana · implied b. ~1928 — 11 household members
| Surname | Knox |
| Given Name | Mary Agnes |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| 1935 Residence (County) | Orleans |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 12 · b. ~1928 · Louisiana
★ You are viewing this record
Sibling
Thomas Knox
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marcia Knox
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esther Knox
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Selma Knox
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frederick Knox
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Knox
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Adelaide Knox
Sibling · 1940 · age 16
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 — Orleans-County, Louisiana
Open full size
1940 US Federal Census — Orleans-County, Louisiana
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01434-00440)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Falmont Molaison | 30 | Son in law | Machinist | Louisiana |
| 42 | Leah Molaison | 28 | Daughter | — | Louisiana |
| 43 | Roadhouse Pitré | 41 | Head | Brakeman | Louisiana |
| 44 | Mabel Pitré | 40 | Wife | — | Louisiana |
| 45 | Dorothy Boudreaux | 18 | Step daughter | — | Louisiana |
| 46 | Nolan Boudreaux | 16 | Step son | Delivery Boy | Louisiana |
| 47 | Jeannette Boudreaux | 15 | Step daughter | — | Louisiana |
| 48 | Daniel Boudreaux | 13 | Step son | — | Louisiana |
| 49 | James Boudreaux | 11 | Step son | — | Louisiana |
| 50 | Elmo Boudreaux | 9 | Step son | — | Louisiana |
| 51 | Rozella Pitré | 5 | Daughter | — | Louisiana |
| 52 | Leon Louvier | 32 | Brother in law | Boilermaker Helper | Louisiana |
| 54 | Thomas L. Knox | 52 | Head | Bond Control Man | Virginia |
| 55 | Selma Knox | 47 | Wife | — | Louisiana |
| 56 | Esther Jane Knox | 18 | Daughter | Long Distance Operator | Louisiana |
| 57 | Adelaide Knox | 16 | Daughter | — | Louisiana |
| 58 | Frederick Knox | 15 | Son | — | Louisiana |
| 59 | Thomas L. Jr. Knox | 14 | Son | — | Louisiana |
| 60 | Selma Knox | 13 | Daughter | — | Louisiana |
| 61 | Mary Agnes Knox THIS PERSON | 12 | Daughter | — | Louisiana |
| 62 | Edna Knox | 9 | Daughter | — | Louisiana |
| 63 | Marcia Knox | 6 | Daughter | — | Louisiana |
| 64 | Aileen Knox | 42 | Sister | Research Assistant | Louisiana |
| 65 | Josephine Kirby | 43 | Head | — | Louisiana |
| 66 | Dorothy Kirby | 22 | Daughter | Sales Lady | Louisiana |
| 67 | Casmer Kirby | 20 | Son | Boilermaker Helper | Louisiana |
| 68 | Carlos Kirby | 15 | Son | — | Louisiana |
| 69 | Raymond Kirby | 11 | Son | — | Louisiana |
| 70 | Barbara Ann Kirby | 5 | Daughter | — | Louisiana |
| 71 | Louis Hebert | 46 | Head | Carpenter | Louisiana |
| 72 | Regina Hebert | 42 | Wife | — | Louisiana |
| 73 | Nolan Hebert | 24 | Son | Carpenter Apprentice | Louisiana |
| 74 | Ollie Hebert | 22 | Daughter | New Worker | Louisiana |
| 75 | Peter Hebert | 12 | Son | — | Louisiana |
| 76 | Frank M. Forsyth | 44 | Head | Bus Driver | Louisiana |
| 77 | Olga Forsyth | 42 | Wife | — | Louisiana |
| 78 | Isabel Forsyth | 18 | Daughter | — | Louisiana |
| 79 | Archibald Forsyth | 11 | Son | Delivery Boy | Louisiana |
| 80 | Frank M. Jr. Forsyth | 5 | Son | — | Louisiana |
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)