MJ
Mary Johns — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Johns across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 3-person household.
Age 44
b. ~1896
Female
Spouse
Born: Syria
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Johns |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Syria |
| 1935 Residence (City) | City of Detroit |
| 1935 Residence (County) | Wayne |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same Place |
| Birth Country | Syria |
| Birthplace (normalized) | syria |
| Township / Ward | City Of Detroit |
| Est. Birth Year | ~1896 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elias Johns | Head | — | 58 | ~1882 |
| Mary Johns | Spouse | — | 44 | ~1896 |
| Robert Johns | Son | — | 29 | ~1911 |
Census Appearances
1920
Wayne, Michigan
Spouse, age 33
Wayne, Michigan · implied b. ~1887 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | John |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Syria |
| Naturalization Status | Alien |
| Father's Birthplace | Syria |
| Mother's Birthplace | Syria |
| Occupation | Keeper |
| Industry | Lodging House |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Syrian |
| Birth Country | Syria |
| Birthplace (normalized) | syria |
1930
Wayne, Michigan
Other, age 38
Wayne, Michigan · implied b. ~1892 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | John |
| Given Name | Mary |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Syria |
| Naturalization Status | Alien |
| Year of Immigration | 1907 |
| Age at First Marriage | 18 |
| Father's Birthplace | Syria |
| Mother's Birthplace | Syria |
| Can Read/Write | Yes |
| Mother Tongue | Syrian |
| Birth Country | Syria |
| Birthplace (normalized) | syria |
1940
Wayne-County, Michigan
Spouse, age 44
Wayne-County, Michigan · implied b. ~1896 — 3 household members
| Surname | Johns |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Syria |
| 1935 Residence (City) | City of Detroit |
| 1935 Residence (County) | Wayne |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same Place |
| Birth Country | Syria |
| Birthplace (normalized) | syria |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Johns
Spouse · 1940 · age 44 · b. ~1896 · Michigan
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01861-00257)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank Scalzo | 34 | Head | Assembly | Connecticut |
| 42 | Helen Scalzo | 30 | Wife | Punch Press | New York |
| 43 | Clarence Cottrell | 30 | Head | Salesman | Michigan |
| 44 | Catherine Cottrell | 26 | Wife | — | Ontario |
| 45 | John Lee | 26 | Head | Inspector | Pennsylvania |
| 46 | Pauline Lee | 22 | Wife | — | Pennsylvania |
| 47 | George Minor | 54 | Head | Paint Dept. | Kentucky |
| 48 | Katherine Minor | 51 | Wife | — | Ohio |
| 49 | John Johns | 28 | Head | Driver | Michigan |
| 50 | Thurla Johns | 17 | Wife | Assembly | Canada-Eng |
| 51 | John Jr. Johns | 0 | Son | — | Michigan |
| 52 | Emile Johns | 0 | Daughter | — | Michigan |
| 53 | Elias Johns | 58 | Head | — | Michigan |
| 54 | Mary Johns THIS PERSON | 44 | Wife | — | Syria |
| 55 | Robert Johns | 29 | Son | Driver | Michigan |
| 56 | Joseph Haddad | 48 | Head | Barber | Syria |
| 57 | Julia Haddad | 42 | Wife | — | Syria |
| 58 | Nadine Haddad | 17 | Son | — | Michigan |
| 59 | Jacob Karkoush | 45 | Head | Salesman | Syria |
| 60 | Mary Karkoush | 35 | Wife | — | Syria |
| 61 | Joseph Karkoush | 19 | Son | Tool & Die Worker | Michigan |
| 62 | Agnes Karkoush | 16 | Daughter | — | Michigan |
| 63 | Gloria Karkoush | 11 | Daughter | — | Michigan |
| 64 | Charlie Bon Costandi | 45 | Head | Baker | Syria |
| 65 | Zurelli Bon Costandi | 43 | Wife | — | Syria |
| 66 | Virginia Bon Costandi | 11 | Daughter | — | Michigan |
| 67 | Julia Bon Costandi | 8 | Daughter | — | Michigan |
| 68 | Carmon Bon Costandi | 7 | Son | — | Michigan |
| 69 | Arkin Bon Costandi | 5 | Son | — | Michigan |
| 70 | Norman Bon Costandi | 4 | Son | — | Michigan |
| 71 | Charles Piedmont | 50 | Head | Tool & Die Maker | Belgium |
| 72 | Mary Piedmont | 49 | Wife | — | Belgium |
| 73 | James Fredianelli | 30 | Head | Road Construction | Italy |
| 74 | Frances Fredianelli | 30 | Wife | — | Italy |
| 75 | Ronald Fredianelli | 10 | Son | — | Michigan |
| 76 | Altieri Ignazio | 59 | Head | — | Italy |
| 77 | Anthony Ventimiglia | 39 | Head | Salesman | Italy |
| 78 | Annie Ventimiglia | 32 | Wife | — | Michigan |
| 79 | Sarah Ventimiglia | 11 | Daughter | — | Michigan |
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)