MH
Mary Hammond — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Hammond across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Lucy — first a daughter (b.~1899), then head of a 2-person household.
Age 41
b. ~1899
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Hammond |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1899 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Hammond | Daughter | — | 41 | ~1899 |
| Lucy Hammond | Head | — | 64 | ~1876 |
Census Appearances
1920
Baltimore, Maryland
Spouse, age 24
Baltimore, Maryland · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | Mamie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Spouse, age 32
Baltimore, Maryland · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 17 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Janitor |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 41
Baltimore-City-County, Maryland · implied b. ~1899 — 2 household members
| Surname | Hammond |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Hammond across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Lucy Hammond (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Lucy Hammond
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Hammond
Daughter · 1940 · age 41 · b. ~1899 · 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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01519-00517)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Evelyn Hammett | 35 | Head | Retired | Maryland |
| 2 | Andrew Abell | 69 | Cousin | Retired | Maryland |
| 4 | Ovonito Sherlin | 66 | Head | Chauffeur | Maryland |
| 5 | Margaret Sherlin | 53 | Wife | Housewife | Ireland |
| 6 | Theresa Melin | 40 | Head | Clerk | Delaware |
| 7 | Robert L. Taylor | 29 | Head | Salesman | Maryland |
| 8 | Edna H. Taylor | 24 | Wife | Housewife | Maryland |
| 9 | Marie E. Crow | 35 | Head | Teacher | Maryland |
| 10 | Minnie Malone | 65 | Aunt | Housewife | Maryland |
| 11 | Walter Hampson | 68 | Head | Retired | Maryland |
| 12 | Nellie B. Hampson | 67 | Wife | Housewife | Maryland |
| 13 | George O. S. Hampson | 38 | Daughter | Physician | Maryland |
| 14 | Walter Mills | 62 | Head | Salesman | Maryland |
| 15 | Eleanor P. Mills | 70 | Wife | Housewife | New Jersey |
| 16 | Marie M. Mills | 31 | Daughter | Cashier | Maryland |
| 17 | Elsie H. Mills | 33 | Daughter | Stenographer | Maryland |
| 18 | Annie H. Winchester | 68 | Sister | — | New Jersey |
| 19 | Louise T. Martin | 57 | Head | Resident Manager | Maryland |
| 20 | Harry L. Martin | 29 | Son | Manager | Maryland |
| 21 | Gertrude Hardin | 75 | Sister | Retired | Maryland |
| 22 | Mary Tilghman | 89 | Lodger | Retired | Maryland |
| 23 | Lucy Hammond | 64 | Head | Housewife | Maryland |
| 24 | Mary Hammond THIS PERSON | 41 | Daughter | — | Maryland |
| 25 | Alma Martin | 56 | Head | Housewife | Maryland |
| 26 | Anna B. Smiley | 58 | Head | Secretary | Ohio |
| 27 | Emma Martin | 65 | Head | Housewife | Virginia |
| 28 | Gladys Martin | 33 | Daughter | Clerk | Virginia |
| 29 | Lucile Martin | 31 | Daughter | Nurse | Virginia |
| 30 | Alma Martin | 27 | Daughter | Clerk | Virginia |
| 31 | Page Martin | 25 | Son | Advertiser | Virginia |
| 32 | James W. Brown | 25 | Head | Social Worker | Maryland |
| 33 | Evelyn L. Brown | 24 | Wife | Secretary | Maryland |
| 34 | Gordon A. Manning | 37 | Head | Inspector | Maryland |
| 35 | Newton T. Sayers | 37 | Head | Examiner | Maryland |
| 36 | Beatrice Long | 34 | Lodger | Operator | Maryland |
| 37 | Albert N. Whitney | 43 | Head | Accountant | Maryland |
| 38 | Linda Whitney | 36 | Wife | Accountant | Virginia |
| 39 | Joseph B. Haviland | 36 | Head | Lawyer | Maryland |
| 40 | Josephine M. Haviland | 27 | Wife | Stenographer | Maryland |
Pedigree Summary
Mary
Gen 1 · 1 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)