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Mary Wolf — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montgomery-County, Maryland
Our Model Tree links this Mary Wolf across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Maryland (XGBoost, ~Confirmed), with identified parents William & William — first a daughter (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Maryland |
| Surname | Wolf |
| Given Name | Mary S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Capitol View |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | Nurse |
| Industry | Private |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 340 |
| Highest Grade | C-2 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Nurse |
| Township / Ward | Capitol View |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Wolf | Daughter | — | 21 | ~1919 |
| William Wolf | Head | — | 61 | ~1879 |
| Sybelle Wolf | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Montgomery, Maryland
Daughter, age 1
Montgomery, Maryland · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolfe |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| 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 |
Daughter, age 11
Montgomery, Maryland · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolfe |
| Given Name | Mary S |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Montgomery-County, Maryland
Daughter, age 21
Montgomery-County, Maryland · implied b. ~1919 — 3 household members
| Surname | Wolf |
| Given Name | Mary S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Capitol View |
| 1935 Residence (County) | Montgomery |
| Occupation | Nurse |
| Industry | Private |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 340 |
| Highest Grade | C-2 |
| 1935 Residence | Same House |
| 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 Wolf across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Wolfe (~0.92 confidence) and father William Wolf (~0.92 confidence) and mother Sybelle Wolf (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Wolfe
b. ~1879
Source father
● Household
· direct · ~0.92
Father
William Wolf
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Sybelle Wolf
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Wolf
Daughter · 1940 · age 21 · b. ~1919 · Maryland
★ You are viewing this record
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-t0627-01555-00458)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Marlow | 47 | Head | Guide | Kentucky |
| 2 | Howard Marlow | 20 | Son | Bookkeeper | Dist. Columbia |
| 3 | William Marlow | 17 | Son | — | Kentucky |
| 4 | James Malcolm | 52 | Head | Structural Engineer | Maryland |
| 5 | Amanda Malcolm | 52 | Wife | — | Ohio |
| 6 | James F. Malcolm | 19 | Son | — | Maryland |
| 7 | Richard Mullett | 63 | Head | Engineer Topographic | Dist. Columbia |
| 8 | Georgia Mullett | 59 | Wife | — | Ohio |
| 9 | Susanne Mullett | 25 | Daughter | Teacher | Dist. Columbia |
| 10 | William Mullett | 24 | Son | Advertising | Dist. Columbia |
| 11 | William Wolf | 61 | Head | Agent | Maryland |
| 12 | Sybelle V. Wolf | 58 | Wife | — | Maryland |
| 13 | Mary S. Wolf THIS PERSON | 21 | Daughter | Nurse | Maryland |
| 14 | Charles Price | 35 | Head | Teacher | Dist. Columbia |
| 15 | Elizabeth Price | 26 | Wife | Assistant Teacher | France |
| 16 | John Baum | 34 | Boarder | — | Dist. Columbia |
| 17 | Claire Baum | 31 | Boarder | — | Dist. Columbia |
| 18 | George Shinn | 60 | Head | Lawyer | West Virginia |
| 19 | Lillian Shinn | 44 | Wife | — | Dist. Columbia |
| 20 | Curtis Shinn | 17 | Son | — | Dist. Columbia |
| 21 | Suzanne Shinn | 13 | Daughter | — | Maryland |
| 22 | Edward Dove | 61 | Head | Mechanic | Maryland |
| 23 | Martha Dove | 55 | Wife | — | Maryland |
| 24 | John Dove | 17 | Son | — | Maryland |
| 25 | Norma Dove | 15 | Daughter | — | Maryland |
| 26 | Elbert Dove | 24 | Son | Gardiner | Maryland |
| 27 | Margaret Dove | 24 | Daughter-in-law | — | Maryland |
| 28 | Elbert Jr. Dove | 4 | Grandson | — | Maryland |
| 29 | John Dove | 3 | Grandson | — | Maryland |
| 30 | Harold M. Wolf | 36 | Head | Express | Maryland |
| 31 | Ellen E. Wolf | 33 | Wife | — | Maryland |
| 32 | Harold Jr. Wolf | 12 | Son | — | Maryland |
| 33 | Robert V. Wolf | 10 | Son | — | Maryland |
| 34 | Mary E. Wolf | 8 | Daughter | — | Maryland |
| 35 | William S. Wolf | 6 | Son | — | Maryland |
| 36 | John Shifflette | 27 | Head | Auto Mechanic | Virginia |
| 37 | Elizabeth Shifflette | 27 | Wife | — | Maryland |
| 38 | Eugene Shifflette | 9 | Son | — | Maryland |
| 39 | William Shifflette | 6 | Son | — | Maryland |
| 40 | Robert Shifflette | 4 | Son | — | Maryland |
Related Census Records
Pedigree Summary
Mary
Gen 1 · 3 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)