MH
Mary Hoover — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Washington, Maryland
Our Model Tree links this Mary Hoover across the 1920, 1930 and 1940 US Censuses in Washington, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1889), then head of a 3-person household.
Age 31
b. ~1889
Female
Spouse
Born: Maryland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Washington, Maryland |
| Surname | Hoover |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Hagerstown City |
| Est. Birth Year | ~1889 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Hoover | Daughter | — | 5 | ~1915 |
| Mary Hoover | Spouse | — | 31 | ~1889 |
| Albert Hoover | Head | — | 34 | ~1886 |
Census Appearances
1920
Washington, Maryland
Spouse, age 31
Washington, Maryland · implied b. ~1889 — 3 household members
| Surname | Hoover |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| 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
Washington, Maryland
Other, age 41
Washington, Maryland · implied b. ~1889 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoover |
| Given Name | May H. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 24 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Washington-County, Maryland
Spouse, age 51
Washington-County, Maryland · implied b. ~1889 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoover |
| Given Name | May |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Hagerstown |
| 1935 Residence (County) | Washington |
| Highest Grade | Hs 4 |
| 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 Hoover across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Hoover
Spouse · 1920 · age 31 · b. ~1889 · Maryland
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Washington, Maryland
Open full size
1920 US Federal Census — Washington, Maryland
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu676unit:0354)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert C. Hoover | 34 | Head | Inspector | Maryland |
| 2 | Mary E. Hoover THIS PERSON | 31 | Wife | — | Maryland |
| 3 | Mary S. Hoover | 5 | Daughter | — | Maryland |
| 4 | Charles E. Miller | 61 | Head | Buffer | Maryland |
| 5 | Mary E. Miller | 40 | Wife | — | Maryland |
| 6 | Garfield Miller | 33 | Head | Driver | Maryland |
| 7 | Blanche Miller | 26 | Wife | — | Pennsylvania |
| 8 | Harold L. Miller | 3 | Son | — | Maryland |
| 9 | Francis Kantz | 23 | Lodger | Knitter | Maryland |
| 10 | John Gower | 65 | Head | Machinist Helper | Maryland |
| 11 | Barbara Gower | 54 | Wife | — | Germany |
| 12 | Edwin Gower | 25 | Son | Silk Weaver | Maryland |
| 13 | James V. Gower | 18 | Son | — | Pennsylvania |
| 14 | Charles W. Miller | 70 | Head | Laborer | Maryland |
| 15 | Sarah E. Miller | 64 | Wife | — | Maryland |
| 16 | Wilbur A. Miller | 37 | Son | Tailor | Maryland |
| 17 | Charles H. Miller | 24 | Son | Laborer | Maryland |
| 18 | Ariel M. H. Miller | 28 | Daughter | Sales Lady | Maryland |
| 19 | Vernon Miller | 27 | Head | Electrician | Virginia |
| 20 | Irene Miller | 21 | Wife | — | Maryland |
| 21 | Charles Miller | 9 | Son | — | Maryland |
| 22 | Ealine Miller | 7 | Daughter | — | Maryland |
| 23 | Helen Miller | 5 | Daughter | — | Maryland |
| 24 | Thelma Miller | 1 | Daughter | — | Maryland |
| 25 | Shelby Miller | 66 | Father | Carpenter | Virginia |
| 26 | Albert S. Rowland | 52 | Head | Mattress Maker | Maryland |
| 27 | Hattie Rowland | 49 | Wife | — | Maryland |
| 28 | Edward Rowland | 15 | Son | Clerk | Maryland |
| 29 | Irene Cunningham | 27 | Daughter | — | Maryland |
| 30 | Frederick Cunningham | 25 | Son-in-law | Boiler Maker Helper | New Jersey |
| 31 | Frederick Jr. Cunningham | 1 | Grandson | — | Maryland |
| 32 | John A. Aidamson | 60 | Head | Carpenter | Maryland |
| 33 | Delia A. Aidamson | 58 | Wife | Nurse | Maryland |
| 34 | Hattie S. Aidamson | 22 | Daughter | — | Maryland |
| 35 | Samuel O. Houser | 66 | Head | Machinist | Maryland |
| 36 | Laura V. Houser | 45 | Wife | — | Maryland |
| 37 | Stella Houser | 40 | Daughter | — | Maryland |
| 38 | Edith Houser | 21 | Daughter | Knitter | Maryland |
| 39 | Harrison M. Houser | 21 | Son | Dyer | Maryland |
| 40 | Martha Arminger | 61 | Head | Nurse | Maryland |
| 41 | Oda Arminger | 24 | Daughter | Seamstress | Maryland |
| 42 | Eva M. Lizer | 33 | Head | — | Maryland |
| 43 | Paul C. Lizer | 13 | Son | — | Maryland |
| 44 | John A. Arndt | 52 | Uncle | Proprietor | Maryland |
| 45 | Isaac K. Horst | 37 | Head | Carpenter | Maryland |
| 46 | Annie Horst | 34 | Wife | — | Pennsylvania |
| 47 | Ethel L. Horst | 13 | Daughter | — | Pennsylvania |
| 48 | Mabel K. Hollinger | 36 | Head | Cashier | Pennsylvania |
| 49 | Beulah Hollinger | 29 | Sister | Sales Lady | Pennsylvania |
| 50 | Dorsey Martin | 21 | Boarder | Salesman | Maryland |
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)