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Mary Walter — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montgomery-County, Maryland
Our Model Tree links this Mary Walter across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Maryland (XGBoost, ~Confirmed), with identified parents Elmer & Agnes — first a daughter (b.~1903), then head of a 9-person household.
Age 37
b. ~1903
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Maryland |
| Surname | Walter |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Elec Dist 6 |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Elec Dist 6 |
| Est. Birth Year | ~1903 |
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 |
|---|---|---|---|---|
| William Walter | Son | — | 26 | ~1914 |
| Elmer Walter | Head | — | 61 | ~1879 |
| Melvin Walter | Son | — | 35 | ~1905 |
| Mary Walter | Daughter | — | 37 | ~1903 |
| Emanuel Walter | Son | — | 25 | ~1915 |
| Francis Walter | Son | — | 19 | ~1921 |
| Melvin Walter | Son | — | 21 | ~1919 |
| Alice Walter | Daughter | — | 34 | ~1906 |
| Myrtle Walter | Daughter | — | 29 | ~1911 |
Census Appearances
1920
Montgomery, Maryland
Daughter, age 16
Montgomery, Maryland · implied b. ~1904 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walter |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Montgomery, Maryland
Daughter, age 26
Montgomery, Maryland · implied b. ~1904 — 14 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walter |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Manager |
| Industry | Chain store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Montgomery-County, Maryland
Daughter, age 37
Montgomery-County, Maryland · implied b. ~1903 — 9 household members
| Surname | Walter |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Elec Dist 6 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Elmer Walter (~0.92 confidence) and mother Agnes Walter (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Elmer Walter
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Agnes Walter
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Walter
Daughter · 1940 · age 37 · b. ~1903 · Maryland
★ You are viewing this record
Sibling
Melvin Walter
Sibling · 1940 · age 35
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Walter
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Walter
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emanuel Walter
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melvin Walter
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Walter
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Myrtle Walter
Sibling · 1940 · age 29
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 — Montgomery-County, Maryland
Open full size
1940 US Federal Census — Montgomery-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01553-00451)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frances Savage | 8 | Daughter | — | Maryland |
| 42 | John Gutterly | 18 | Brother | Laborer | Maryland |
| 43 | Ernest Hoal | 53 | Head | Laborer | Maryland |
| 44 | June Hoal | 50 | Wife | — | Maryland |
| 45 | Edna Hoal | 24 | Daughter | Maid | Maryland |
| 46 | Margaret Hoal | 22 | Daughter | — | Maryland |
| 47 | Melvin Hoal | 21 | Son | Driver | Maryland |
| 48 | Charlie Hoal | 18 | Son | — | Maryland |
| 49 | Peter Hoal | 17 | Son | — | Maryland |
| 50 | James Hoal | 14 | Son | — | Maryland |
| 51 | Helen Hoal | 12 | Daughter | — | Maryland |
| 52 | Jerry Hoal | 11 | Son | — | Maryland |
| 53 | Provitt Hoal | 8 | Son | — | Maryland |
| 54 | Corrine Hoal | 6 | Daughter | — | Maryland |
| 55 | Neal Hoal | 5 | Son | — | Maryland |
| 56 | Anna Mae Hoal | 3 | Daughter | — | Maryland |
| 57 | Marvin Johnson | 24 | Head | — | Maryland |
| 58 | Mary Johnson | 10 | Daughter | — | Maryland |
| 59 | Lonky Johnson | 7 | Son | — | Maryland |
| 60 | John H Johnson | 6 | Son | — | Maryland |
| 61 | June Hoal | 11 | Daughter | — | Maryland |
| 62 | Marshall Hoal | 9 | Son | — | Maryland |
| 63 | Leroy Hoal | 6 | Son | — | Maryland |
| 64 | Woodrow Hoal | 4 | Son | — | Maryland |
| 65 | Eugene Hoal | 3 | Son | — | Maryland |
| 66 | Bertram Burroughs | 59 | Head | Agent | Maryland |
| 67 | Sarah Burroughs | 57 | Wife | — | Maryland |
| 68 | Joseph Tundall | 15 | Boarder | — | Maryland |
| 69 | Elmer B Walter | 61 | Head | Farmer | Maryland |
| 70 | Mary A Walter THIS PERSON | 37 | Daughter | — | Maryland |
| 71 | Melvin A Walter | 35 | Son | Farmer | Maryland |
| 72 | Alice P Walter | 34 | Daughter | — | Maryland |
| 73 | Myrtle E Walter | 29 | Daughter | — | Maryland |
| 74 | William C Walter | 26 | Son | Farmer | Maryland |
| 75 | Emanuel B Walter | 25 | Son | Clerk | Maryland |
| 76 | Melvin S Walter | 21 | Son | Farmer | Maryland |
| 77 | Francis D Walter | 19 | Son | — | Maryland |
| 78 | Edward Haines | 60 | Head | Caretaker | Maryland |
| 79 | Marie Haines | 50 | Wife | — | Maryland |
| 80 | Haller Mates | 60 | Head | Farmer | Maryland |
Related Census Records
Pedigree Summary
Mary + 7 siblings
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)