MA
Mary Alexander — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Monongalia-County, West Virginia
Our Model Tree links this Mary Alexander across the 1930 and 1940 US Censuses in Monongalia-County, West Virginia (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 12-person household.
Age 21
b. ~1919
Female
Daughter
Born: West Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Monongalia-County, West Virginia |
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | West Virginia |
| 1935 Residence (City) | Morgantown city |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | C 4 |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
| Township / Ward | Morgantown City |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Alexander | Daughter | — | 21 | ~1919 |
| Marguerite Alexander | Daughter | — | 11 | ~1929 |
| Delores Alexander | Daughter | — | 8 | ~1932 |
| Helen Alexander | Daughter | — | 17 | ~1923 |
| Emma Alexander | Daughter | — | 15 | ~1925 |
| Kathryn Alexander | Daughter | — | 23 | ~1917 |
| Patty Alexander | Daughter | — | 4 | ~1936 |
| Mike Alexander | Head | — | 59 | ~1881 |
| George Alexander | Son | — | 23 | ~1917 |
| Emile Alexander | Son | — | 13 | ~1927 |
| Johnny Alexander | Son | — | 19 | ~1921 |
| Martha Alexander | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Monongalia, West …
Daughter, age 11
Monongalia, West Virginia · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | West Virginia |
| Father's Birthplace | Syria |
| Mother's Birthplace | Syria |
| Can Read/Write | Yes |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
1940
Monongalia-County, West …
Daughter, age 21
Monongalia-County, West Virginia · implied b. ~1919 — 12 household members
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | West Virginia |
| 1935 Residence (City) | Morgantown city |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | C 4 |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
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 Alexander across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Alexander
Daughter · 1940 · age 21 · b. ~1919 · West Virginia
★ You are viewing this record
Sibling
Patty Alexander
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Johnny Alexander
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emile Alexander
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emma Alexander
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Delores Alexander
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathryn Alexander
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marguerite Alexander
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Alexander
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Alexander
Sibling · 1940 · age 17
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 — Monongalia-County, West Virginia
Open full size
1940 US Federal Census — Monongalia-County, West Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04433-00218)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Myrnie D. Gane | 67 | Head | — | West Virginia |
| 2 | Minnie May Wyss | 67 | Lodger | — | Pennsylvania |
| 3 | Mike Alexander | 59 | Head | Owner-Operator | Lithuania |
| 4 | Martha Alexander | 42 | Wife | — | Lithuania |
| 5 | Mary Alexander THIS PERSON | 21 | Daughter | — | West Virginia |
| 6 | Johnny Alexander | 19 | Son | Laborer | West Virginia |
| 7 | Helen Alexander | 17 | Daughter | — | West Virginia |
| 8 | Emma Alexander | 15 | Daughter | — | West Virginia |
| 9 | Emile Alexander | 13 | Son | — | West Virginia |
| 10 | Marguerite Alexander | 11 | Daughter | — | West Virginia |
| 11 | Delores Alexander | 8 | Daughter | — | West Virginia |
| 12 | Patty Jo Alexander | 4 | Daughter | — | West Virginia |
| 13 | George Alexander | 23 | Son | Asst. Owner | West Virginia |
| 14 | Kathryn Alexander | 23 | Daughter | — | West Virginia |
| 15 | James H. Emerson | 28 | Head | Credit Manager | West Virginia |
| 16 | Virginia Emerson | 27 | Wife | — | West Virginia |
| 17 | Ada M. Austin | 58 | Head | Osteopath | West Virginia |
| 18 | Augusta Austin | 55 | Wife | Receptionist | West Virginia |
| 19 | Richard Austin | 19 | Son | — | West Virginia |
| 20 | George Austin | 27 | Son | Osteopath | West Virginia |
| 21 | Anna May Austin | 22 | Daughter-in-law | — | Missouri |
| 22 | Dolores Ann Austin | 3 | Granddaughter | — | West Virginia |
| 23 | Guy O. Lemley | 58 | Head | Collector | West Virginia |
| 24 | Edward G. Donley | 62 | Head | Lawyer | Pennsylvania |
| 25 | Eleanor T. Donley | 61 | Wife | — | Pennsylvania |
| 26 | Ernest O. Gainer | 40 | Head | Contractor | West Virginia |
| 27 | Fred O. Johnson | 26 | Head | Superintendent | West Virginia |
| 28 | Margaret Johnson | 26 | Wife | — | West Virginia |
| 29 | W. Richard | 44 | Head | Part Owner | West Virginia |
| 30 | Earl Richard | 25 | Son | Clerical Clerk | West Virginia |
| 31 | Laverne Bowersock | 64 | Head | — | West Virginia |
| 32 | Lillian Musgrave | 43 | Head | Owner | West Virginia |
| 33 | Nellie Murphy | 40 | Head | Waitress | West Virginia |
| 34 | Alice Cunningham | 26 | Head | Art Teacher | West Virginia |
| 35 | Emily Pritchard | 24 | Partner | Stenographer | West Virginia |
| 36 | Ruth Stewart | 27 | Head | Secretary | Pennsylvania |
| 37 | John Kuppe | 67 | Head | Janitor | Pennsylvania |
| 38 | Dora B. Kuppe | 61 | Wife | — | West Virginia |
| 39 | George Simmons | 39 | Head | Assistant State Supervisor | West Virginia |
| 40 | Eleda Simmons | 27 | Wife | — | West Virginia |
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)