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Mary Wolfe — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Maryland
Our Model Tree links this Mary Wolfe across the 1930 and 1940 US Censuses in Washington-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 9-person household.
Age 22
b. ~1918
Female
Daughter
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Maryland |
| Surname | Wolfe |
| Given Name | Mary S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Hagerstown |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | Operator |
| Industry | C & P Phone Co. |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 880 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Operator |
| Township / Ward | Hagerstown |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Emory Wolfe | Son | — | 20 | ~1920 |
| John Wolfe | Son | — | 9 | ~1931 |
| Elizabeth Wolfe | Spouse | — | 46 | ~1894 |
| Mary Wolfe | Daughter | — | 22 | ~1918 |
| George Wolfe | Head | — | 47 | ~1893 |
| Winifred Wolfe | Daughter | — | 12 | ~1928 |
| Irvin Wolfe | Son | — | 15 | ~1925 |
| Nadine Wolfe | Daughter | — | 4 | ~1936 |
| Richard Wolfe | Son | — | 24 | ~1916 |
Census Appearances
1930
Washington, Maryland
Daughter, age 12
Washington, Maryland · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolfe |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Washington-County, Maryland
Daughter, age 22
Washington-County, Maryland · implied b. ~1918 — 9 household members
| Surname | Wolfe |
| Given Name | Mary S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Hagerstown |
| 1935 Residence (County) | Washington |
| Occupation | Operator |
| Industry | C & P Phone Co. |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 880 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | 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 Wolfe across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Wolfe
Daughter · 1940 · age 22 · b. ~1918 · Maryland
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Sibling
Winifred Wolfe
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emory Wolfe
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nadine Wolfe
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irvin Wolfe
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Wolfe
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Wolfe
Sibling · 1940 · age 9
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 — Washington-County, Maryland
Open full size
1940 US Federal Census — Washington-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01561-00312)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Blanche M. Mack | 51 | Wife | Teacher | Pennsylvania |
| 2 | Ruth A. Mack | 27 | Daughter | Teacher | Maryland |
| 3 | Doris E. Mack | 12 | Daughter | — | Maryland |
| 4 | Carroll A. James | 38 | Head | Electric Engineer | Maryland |
| 5 | Margaret S. James | 28 | Wife | — | Pennsylvania |
| 6 | Carroll S. Jr. James | 3 | Son | — | Maryland |
| 7 | Annie E. Herman | 77 | Board-mother | — | Maryland |
| 8 | Robert A. Jr. Rector | 31 | Head | Agent | Virginia |
| 9 | Ann E. Rector | 30 | Wife | — | Maryland |
| 10 | Robert A. 3Rd Rector | 7 | Son | — | Maryland |
| 11 | Edward A. Hageman | 48 | Head | Meter Reader | Pennsylvania |
| 12 | Margaret R. Hageman | 40 | Wife | — | Maryland |
| 13 | Charles E. Nellinger | 63 | Head | — | West Virginia |
| 14 | Mary E. Nellinger | 61 | Wife | — | Maryland |
| 15 | Hazel M. Nellinger | 31 | Daughter | Saleslady | Maryland |
| 16 | Phoebe C. Melart | 42 | Head | — | Pennsylvania |
| 17 | George H. Wolfe | 47 | Head | Mechanic | Virginia |
| 18 | Elizabeth L. Wolfe | 46 | Wife | — | Virginia |
| 19 | Richard H. Wolfe | 24 | Son | — | Virginia |
| 20 | Mary S. Wolfe THIS PERSON | 22 | Daughter | Operator | Virginia |
| 21 | Emory N. Wolfe | 20 | Son | Office | Maryland |
| 22 | Irvin L. Wolfe | 15 | Son | — | Maryland |
| 23 | Winifred G. Wolfe | 12 | Daughter | — | Maryland |
| 24 | John N. Wolfe | 9 | Son | — | Maryland |
| 25 | Nadine E. Wolfe | 4 | Daughter | — | Maryland |
| 26 | Jacob S. Hess | 46 | Head | Brakeman | Virginia |
| 27 | Ethel E. Hess | 36 | Wife | — | Virginia |
| 28 | Naomi V. Hess | 18 | Daughter | — | Virginia |
| 29 | Ethel M. Hess | 16 | Daughter | — | Virginia |
| 30 | Thomas A. Hess | 15 | Daughter | — | Maryland |
| 31 | Bernard M. Hess | 13 | Son | — | Maryland |
| 32 | Burrel J. Hess | 11 | Son | — | Maryland |
| 33 | Anna J. Hess | 8 | Daughter | — | Maryland |
| 34 | Donald E. Hess | 4 | Son | — | Maryland |
| 35 | Ralph M. Jefferies | 48 | Head | Minister | Maryland |
| 36 | Hattie O. Jefferies | 57 | Wife | — | Maryland |
| 37 | Joseph R. Jefferies | 19 | Son | — | Maryland |
| 38 | Horace D. Jefferies | 17 | Son | — | Maryland |
| 39 | George H. Jr. Kahl | 44 | Head | Engineer | Maryland |
| 40 | Ruth M. Kahl | 45 | Wife | — | Pennsylvania |
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)