MW
Mary Wolf — 1920 US Census Record
Model Tree available1920 United States Federal Census · Frederick, Maryland
Our Model Tree links this Mary Wolf across the 1920, 1930 and 1940 US Censuses in Frederick, Maryland (XGBoost, ~Confirmed), with identified parents Henry & Caroline — first a daughter (b.~1913), then head of a 8-person household.
Age 7
b. ~1913
Female
Daughter
Born: Maryland
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Frederick, Maryland |
| Surname | Wolf |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election District 7 Urbana Part Of |
| Est. Birth Year | ~1913 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Wolf | Daughter | — | 13 | ~1907 |
| Martha Wolf | Daughter | — | 3 | ~1917 |
| Mary Wolf | Daughter | — | 7 | ~1913 |
| Henry Wolf | Head | — | 41 | ~1879 |
| Leroy Wolf | Son | — | 6 | ~1914 |
| Calvin Wolf | Son | — | 12 | ~1908 |
| Joseph Wolf | Son | — | 6 | ~1914 |
| Caroline Wolf | Spouse | — | 38 | ~1882 |
Census Appearances
1920
Frederick, Maryland
Daughter, age 7
Frederick, Maryland · implied b. ~1913 — 8 household members
| Surname | Wolf |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Frederick, Maryland
Daughter, age 18
Frederick, Maryland · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolfe |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
Daughter, age 27
Frederick-County, Maryland · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolfe |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Urbana Dist. Election District 7 |
| 1935 Residence (County) | Frederick |
| Occupation | Maid |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 240 |
| Highest Grade | No 6 |
| 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 Henry Wolf (~0.92 confidence) and mother Caroline Wolf (~0.92 confidence) and father Harry Wolfe (~0.92 confidence) and father Harry Wolfe (~0.60 confidence) and mother Caroline Wolfe (~0.60 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.79
Father
Henry Wolf
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Caroline Wolf
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Harry Wolfe
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Harry Wolfe
b. ~1902
Source father
● Household
· direct · ~0.6
Mother
Caroline Wolfe
b. ~1910
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Mary Wolf
Daughter · 1920 · age 7 · b. ~1913 · Maryland
★ You are viewing this record
Sibling
Martha Wolf
Sibling · 1920 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leroy Wolf
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Wolf
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Calvin Wolf
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Wolf
Sibling · 1920 · age 6
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
1920 US Federal Census — Frederick, Maryland
Open full size
1920 US Federal Census — Frederick, Maryland
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu672unit:1141)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Plunkard Eldridge W Plunkerd | 14 | Son | — | Maryland |
| 2 | Margaret L Plunkerd | 9 | Daughter | — | Maryland |
| 3 | Ross D Plunkerd | 6 | Son | — | Maryland |
| 4 | Ethel V Plunkerd | 4 | Daughter | — | Maryland |
| 5 | Ruby J Plunkerd | 1 | Daughter | — | Maryland |
| 6 | John L White | 31 | Head | Farmer | Maryland |
| 7 | Dora S White | 31 | Wife | — | Maryland |
| 8 | Daniel S White | 7 | Son | — | Maryland |
| 9 | Bessie D White | 3 | Daughter | — | Maryland |
| 10 | J Thomas White | 1 | Son | — | Maryland |
| 11 | Henry Wolf | 41 | Head | Farmer | Maryland |
| 12 | Caroline Wolf | 38 | Wife | — | Maryland |
| 13 | Dorothy E Wolf | 13 | Daughter | — | Maryland |
| 14 | Calvin A Wolf | 12 | Son | — | Maryland |
| 15 | Mary L Wolf THIS PERSON | 7 | Daughter | — | Maryland |
| 16 | Joseph L Wolf | 6 | Son | — | Maryland |
| 17 | Leroy Wolf | 6 | Son | — | Maryland |
| 18 | Martha R Wolf | 3 | Daughter | — | Maryland |
| 19 | Isaac H Posey | 73 | Head | — | Maryland |
| 20 | Margaret Posey | 50 | Wife | — | Maryland |
| 21 | Dora L Posey | 34 | Daughter | — | Maryland |
| 22 | Elsie M Posey | 22 | Daughter | — | Maryland |
| 23 | Marshal Grayson | 30 | Son-in-law | Laborer | Maryland |
| 24 | Bessie Grayson | 26 | Daughter | — | Maryland |
| 25 | Preston Grayson | 7 | Grandson | — | Maryland |
| 26 | Thelma Posey | 1 | Granddaughter | — | Maryland |
| 27 | Charles F Crawford | 53 | Head | Farmer | Maryland |
| 28 | Laura B Crawford | 58 | Wife | — | Maryland |
| 29 | Ross F Crawford | 28 | Son | Freight Handler | Maryland |
| 30 | Charles L Crawford | 26 | Son | Farm Laborer | Maryland |
| 31 | Edgar S Crawford | 22 | Son | Farmer | Maryland |
| 32 | John W Crawford | 20 | Son | Farm Laborer | Maryland |
| 33 | William E Crawford | 18 | Son | Farm Laborer | Maryland |
| 34 | Marcella M Crawford | 16 | Daughter | — | Maryland |
| 35 | Edith C Crawford | 14 | Daughter | — | Maryland |
| 36 | Joseph Eckenrode | 64 | Head | Farm Laborer | Maryland |
| 37 | Addie Eckenrode | 55 | Wife | — | Maryland |
| 38 | Elias D Eckenrode | 32 | Son | Farm Laborer | Maryland |
| 39 | Grant Stewart | 57 | Head | Farmer | Maryland |
| 40 | Sarah J Stewart | 60 | Sister | — | Maryland |
| 41 | David E Kanode | 34 | Head | Farmer | Maryland |
| 42 | Marcella Kanode | 31 | Wife | — | Maryland |
| 43 | Catherine M Kanode | 9 | Daughter | — | Maryland |
| 44 | Lewis E Kanode | 5 | Son | — | Maryland |
| 45 | Thomas Danna | 15 | Orphan | — | Maryland |
| 46 | Harper L Kanode | 58 | Head | — | Maryland |
| 47 | Nellie C Kanode | 28 | Daughter | — | Maryland |
| 48 | Antoinette R Davis | 76 | Head | Farmer | Maryland |
| 49 | Eva Fox | 8 | Orphan | — | Maryland |
| 50 | Patrick H Ambush | 76 | Head | — | Maryland |
Related Census Records
Pedigree Summary
Mary + 5 siblings
Gen 1 · 5 parents
~0.79
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)