MR
Mary Ritter — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Berkeley-County, West Virginia
Our Model Tree links this Mary Ritter across the 1930 and 1940 US Censuses in Berkeley-County, West Virginia (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 4-person household.
Age 19
b. ~1921
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Berkeley-County, West Virginia |
| Surname | Ritter |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Martinsburg |
| 1935 Residence (County) | Berkeley |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Martinsburg |
| Est. Birth Year | ~1921 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Betty Ritter | Daughter | — | 17 | ~1923 |
| J Ritter | Head | — | 70 | ~1870 |
| Mary Ritter | Daughter | — | 19 | ~1921 |
| Grace Ritter | Spouse | — | 51 | ~1889 |
Census Appearances
1930
Berkeley, West …
Daughter, age 9
Berkeley, West Virginia · implied b. ~1921 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ritter |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Berkeley-County, West …
Daughter, age 19
Berkeley-County, West Virginia · implied b. ~1921 — 4 household members
| Surname | Ritter |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Martinsburg |
| 1935 Residence (County) | Berkeley |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Ritter across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Ritter
Daughter · 1940 · age 19 · b. ~1921 · West Virginia
★ You are viewing this record
Sibling
Betty Ritter
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 — Berkeley-County, West Virginia
Open full size
1940 US Federal Census — Berkeley-County, West Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04393-00339)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lillian S. Stillwell | 52 | Wife | — | West Virginia |
| 2 | Mary Lee Stillwell | 22 | Daughter | Contortionist | West Virginia |
| 3 | George W. Jr. Stillwell | 17 | Son | — | West Virginia |
| 4 | Lewis Lamp | 40 | Head | Truck Driver | West Virginia |
| 5 | Clara B. Lamp | 40 | Wife | — | West Virginia |
| 6 | Ella May Lamp | 16 | Daughter | — | West Virginia |
| 7 | J. R. Ritter | 70 | Head | Weaver | Pennsylvania |
| 8 | Grace L. Ritter | 51 | Wife | — | Maryland |
| 9 | Mary Louise Ritter THIS PERSON | 19 | Daughter | — | Pennsylvania |
| 10 | Betty H. Ritter | 17 | Daughter | — | Pennsylvania |
| 11 | Harry L. Mcbride | 61 | Head | Foreman | West Virginia |
| 12 | Florence S. Mcbride | 56 | Wife | — | Virginia |
| 13 | Violetta J. Mcbride | 18 | Daughter | — | West Virginia |
| 14 | Herbert Britner | 23 | Head | Stacker | West Virginia |
| 15 | Virginia Britner | 24 | Daughter | Sorter | West Virginia |
| 16 | L. O. Keat | 31 | Head | Fuller | West Virginia |
| 17 | Rosella Keat | 32 | Wife | Bookkeeper | West Virginia |
| 18 | Miley Miller | 32 | Head | Shipman | Virginia |
| 19 | Katherine Miller | 34 | Wife | — | West Virginia |
| 20 | Margaret Casey | 17 | Daughter | — | West Virginia |
| 21 | Rhoda Ann Casey | 14 | Daughter | — | West Virginia |
| 22 | Glenda Casey | 11 | Daughter | — | West Virginia |
| 23 | Jane Casey | 72 | Mother-in-law | — | West Virginia |
| 24 | Katie Kilmer | 72 | Sister-in-law | — | Pennsylvania |
| 25 | J. D. Brown | 65 | Head | — | West Virginia |
| 26 | Bessie W. Brown | 58 | Wife | Seamstress | West Virginia |
| 27 | Charles B. Clendenning | 33 | Head | Salesman | West Virginia |
| 28 | Myrtle Clendenning | 35 | Wife | — | Pennsylvania |
| 29 | Charles Clendenning | 10 | Son | — | West Virginia |
| 30 | John Clendenning | 8 | Son | — | West Virginia |
| 31 | Paul Clendenning | 6 | Son | — | West Virginia |
| 32 | Frances Clendenning | 3 | Daughter | — | West Virginia |
| 33 | Donald Clendenning | 0 | Son | — | West Virginia |
| 34 | Elmer C. Grodman | 24 | Head | Pattern Maker | West Virginia |
| 35 | Mary L. Grodman | 27 | Wife | — | West Virginia |
| 36 | Mary Ellen Grodman | 3 | Daughter | — | West Virginia |
| 37 | Gladys Kyne | 21 | Daughter-in-law | Waitress | West Virginia |
| 38 | W. S. Hall | 33 | Head | Manager-Hosiery | Pennsylvania |
| 39 | Dorothy B. Hall | 30 | Wife | — | Pennsylvania |
| 40 | W. S. Jr. Hall | 9 | Son | — | Massachusetts |
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)