MW
Mary Walter — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Charles-County, Maryland
Our Model Tree links this Mary Walter across the 1930 and 1940 US Censuses in Charles-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Charles-County, Maryland |
| Surname | Walter |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 4, Bryantown |
| 1935 Residence (County) | Charles |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election District 4 Bryantown |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Walter | Daughter | — | 9 | ~1931 |
| Mary Walter | Daughter | — | 11 | ~1929 |
| Harold Walter | Son | — | 12 | ~1928 |
| Emma Walter | Spouse | — | 43 | ~1897 |
| Edward Walter | Son | — | 15 | ~1925 |
| Frankie Walter | Son | — | 16 | ~1924 |
| Carl Walter | Son | — | 13 | ~1927 |
| Harry Walter | Son | — | 18 | ~1922 |
Census Appearances
1930
Charles, Maryland
Daughter, age
Charles, Maryland · implied b. ~1930 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walter |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Pennsylvania |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Charles-County, Maryland
Daughter, age 11
Charles-County, Maryland · implied b. ~1929 — 8 household members
| Surname | Walter |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 4, Bryantown |
| 1935 Residence (County) | Charles |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Walter across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Walter
Daughter · 1940 · age 11 · b. ~1929 · Maryland
★ You are viewing this record
Sibling
Catherine Walter
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frankie Walter
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Walter
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Walter
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Walter
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Walter
Sibling · 1940 · age 13
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 — Charles-County, Maryland
Open full size
1940 US Federal Census — Charles-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01546-00403)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emma Walter | 43 | Wife | — | Pennsylvania |
| 2 | Harry C. Walter | 18 | Son | Laborer | Maryland |
| 3 | Frankie J. Walter | 16 | Son | — | Maryland |
| 4 | Edward F. Walter | 15 | Son | — | Maryland |
| 5 | Carl G. Walter | 13 | Son | — | Maryland |
| 6 | Harold A. Walter | 12 | Son | — | Maryland |
| 7 | Mary A. Walter THIS PERSON | 11 | Daughter | — | Maryland |
| 8 | Catherine Walter | 9 | Daughter | — | Maryland |
| 9 | Charles Wilhoffer | 55 | Head | Farmer | Nebraska |
| 10 | Clara L. Wilhoffer | 62 | Wife | — | Pennsylvania |
| 11 | Carl G. Wilhoffer | 32 | Son | Carpenter | Arkansas |
| 12 | Helen Marie Wilhoffer | 28 | Daughter-in-law | — | Wash. D. C. |
| 13 | Gordon Rutherford | 26 | Head | Laborer | Ohio |
| 14 | Elsie Rutherford | 25 | Wife | — | New York |
| 15 | Joseph E. Harkins | 38 | Head | Laborer | Maryland |
| 16 | Marie S. Harkins | 45 | Wife | — | Maryland |
| 17 | William B. Chase | 35 | Lodger | Laborer | Maryland |
| 18 | Joseph Johnson | 37 | Lodger | — | Maryland |
| 19 | Mary S. Chase | 33 | Lodger | — | Maryland |
| 20 | Joseph B. Chase | 21 | Head | Laborer | Maryland |
| 21 | Charles Douglas | 25 | Lodger | — | Maryland |
| 22 | Margaret Douglas | 20 | Lodger | — | Maryland |
| 23 | Charles Douglas | 5 | Lodger | — | Maryland |
| 24 | Joseph Leo Chase | 20 | Brother | Laborer | Maryland |
| 25 | Julia Chase | 14 | Sister | — | Maryland |
| 26 | Elizabeth Chase | 16 | Sister | House Work | Maryland |
| 27 | Susan Chase | 14 | Sister | — | Maryland |
| 28 | George Chase | 12 | Brother | — | Maryland |
| 29 | John Chase | 10 | Brother | — | Maryland |
| 30 | Emily Chase | 9 | Sister | — | Maryland |
| 31 | Frances Chase | 7 | Sister | — | Maryland |
| 32 | Frank Harkins | 50 | Head | Laborer | Maryland |
| 33 | Julia S. Harkins | 54 | Wife | — | Maryland |
| 34 | Lillie Harkins | 30 | Daughter | — | Maryland |
| 35 | Joseph Harkins | 16 | Grandson | — | Maryland |
| 36 | Mary Harkins | 12 | Granddaughter | — | Maryland |
| 37 | James Harkins | 7 | Grandson | — | Maryland |
| 38 | Dane S. Chisley | 75 | Head | — | Maryland |
| 39 | William Edelen | 24 | Lodger | Cook | Maryland |
| 40 | Mamie Edelen | 19 | Lodger | — | Maryland |
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)