MJ
Mary Johns — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Orleans-County, Louisiana
Our Model Tree links this Mary Johns across the 1930 and 1940 US Censuses in Orleans-County, Louisiana (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Female
Daughter
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Orleans-County, Louisiana |
| Surname | Johns |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| 1935 Residence (County) | Orleans Parish |
| Additional Details | |
| Highest Grade | Yes 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Township / Ward | New Orleans City |
| Est. Birth Year | ~1924 |
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 |
|---|---|---|---|---|
| Alfreda Johns | Daughter | — | 8 | ~1932 |
| Alfred Johns | Son | — | 18 | ~1922 |
| Rosabelle Johns | Daughter | — | 10 | ~1930 |
| Henry Johns | Son | — | 22 | ~1918 |
| Mary Johns | Daughter | — | 16 | ~1924 |
| Alfred Johns | Head | — | 47 | ~1893 |
| William Johns | Son | — | 21 | ~1919 |
| Lawrence Johns | Son | — | 19 | ~1921 |
| Sarah Johns | Spouse | — | 35 | ~1905 |
Census Appearances
1930
Orleans, Louisiana
Daughter, age 5
Orleans, Louisiana · implied b. ~1925 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | John |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Orleans-County, Louisiana
Daughter, age 16
Orleans-County, Louisiana · implied b. ~1924 — 9 household members
| Surname | Johns |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| 1935 Residence (County) | Orleans Parish |
| Highest Grade | Yes 4 |
| 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 Johns across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Johns
Daughter · 1940 · age 16 · b. ~1924 · Louisiana
★ You are viewing this record
Sibling
Alfred Johns
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfreda Johns
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosabelle Johns
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Johns
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Johns
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Johns
Sibling · 1940 · age 21
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
40 people indexed on this census page (nara:1940:m-t0627-01435-00236)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Callier | 48 | Head | Longshoreman | Alabama |
| 2 | Lovinia Callier | 37 | Wife | Servant | Louisiana |
| 3 | Alfred Johns | 47 | Head | Pullman Porter | Louisiana |
| 4 | Sarah Johns | 35 | Wife | — | Louisiana |
| 5 | Henry Johns | 22 | Son | — | Louisiana |
| 6 | William Johns | 21 | Son | Butler | Louisiana |
| 7 | Lawrence Johns | 19 | Son | Butler | Louisiana |
| 8 | Alfred Johns | 18 | Son | — | Louisiana |
| 9 | Mary Johns THIS PERSON | 16 | Daughter | — | Louisiana |
| 10 | Rosabelle Johns | 10 | Daughter | — | Louisiana |
| 11 | Alfreda Johns | 8 | Daughter | — | Louisiana |
| 12 | Jacob Freeman | 43 | Head | Presser | Louisiana |
| 13 | Willie M Freeman | 21 | Wife | Maid | Louisiana |
| 14 | Katie Gordon | 55 | Mother-in-law | Servant | Louisiana |
| 15 | Edythe Burbank | 24 | Sister-in-law | Waitress | Louisiana |
| 16 | Gordon Burbank | 5 | Nephew | — | Louisiana |
| 17 | Jo-Anne Burbank | 4 | Niece | — | Louisiana |
| 18 | Dan Uphew | 65 | Head | Porter | Louisiana |
| 19 | Ella Uphew | 48 | Wife | Laundress | Louisiana |
| 20 | Louis Williams | 22 | Nephew | Laborer | Louisiana |
| 21 | Isabelle Jones | 25 | Lodger | Servant | Louisiana |
| 22 | Hattie Whitaker | 22 | Lodger | Servant | Texas |
| 23 | Celestine Harris | 50 | Head | Laundress | Louisiana |
| 24 | Ophelia Johnson | 33 | Lodger | Hair Dresser | Louisiana |
| 25 | Oscar Johnson | 12 | Son | — | Louisiana |
| 26 | Elizabeth Raphael | 65 | Head | Laundress | Louisiana |
| 27 | Hubert Ellis | 30 | Son-in-law | Laborer | Louisiana |
| 28 | Victoria Ellis | 30 | Daughter | — | Louisiana |
| 29 | Hubert Ellis | 6 | Grandson | — | Louisiana |
| 30 | Frances Ellis | 5 | Granddaughter | — | Louisiana |
| 31 | Clara M Ellis | 2 | Granddaughter | — | Louisiana |
| 32 | Lula Patrick | 39 | Lodger | Servant | Louisiana |
| 33 | Frances Lobello | 57 | Head | Proprietress | Louisiana |
| 34 | Bernadine Lobello | 27 | Daughter | Clerk | Louisiana |
| 35 | Lena Lobello | 25 | Daughter | Clerk | Louisiana |
| 36 | Vincent Lobello | 23 | Son | P. Bartender | Louisiana |
| 37 | Thomas Lobello | 21 | Son | Painter | Louisiana |
| 38 | Bessie Lobello | 18 | Daughter | Stenographer | Louisiana |
| 39 | Selena Columber | 48 | Head | Hair Dresser | Louisiana |
| 40 | Christopher Columber | 26 | Son | Porter | 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)