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Mary Hammond — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kent-County, Delaware
Our Model Tree links this Mary Hammond across the 1910, 1920, 1930 and 1940 US Censuses in Kent-County, Delaware (XGBoost, ~Confirmed) — first a spouse (b.~1869), then head of a 3-person household.
Age 71
b. ~1869
Female
Spouse
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kent-County, Delaware |
| Surname | Hammond |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | 9th Dist |
| 1935 Residence (County) | Kent |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | 9Th Dist |
| Est. Birth Year | ~1869 |
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 |
|---|---|---|---|---|
| John Hammond | Head | — | 72 | ~1868 |
| J Hammond | Son | — | 49 | ~1891 |
| Mary Hammond | Spouse | — | 71 | ~1869 |
Census Appearances
1910
Kent, Delaware
Spouse, age 41
Kent, Delaware · implied b. ~1869 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Delaware |
| Years Married | 18 |
| Children Born | 10 |
| Children Living | 10 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1920
Kent, Delaware
Spouse, age 51
Kent, Delaware · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
Kent, Delaware
Spouse, age 61
Kent, Delaware · implied b. ~1869 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Delaware |
| Age at First Marriage | 23 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
Kent-County, Delaware
Spouse, age 71
Kent-County, Delaware · implied b. ~1869 — 3 household members
| Surname | Hammond |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | 9th Dist |
| 1935 Residence (County) | Kent |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Hammond
Spouse · 1940 · age 71 · b. ~1869 · Delaware
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Kent-County, Delaware
Open full size
1940 US Federal Census — Kent-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00544-00863)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Matilda Kotlaba | 36 | Wife | — | Czecho Slovakia |
| 2 | Ann Marie Kotlaba | 5 | Daughter | — | Delaware |
| 3 | Samuel Abram | 48 | Head | Farmer | Delaware |
| 4 | Lettie Abram | 45 | Wife | — | Delaware |
| 5 | Isiah Deputy | 72 | Father-in-law | — | Delaware |
| 6 | John Abram | 16 | Foster child | — | Pennsylvania |
| 7 | Ebe Rickards | 40 | Head | Farmer | Delaware |
| 8 | Mildred Hicks | 25 | Housekeeper | — | Delaware |
| 9 | Albert Thistlewood | 46 | Head | Farmer | Delaware |
| 10 | Mary D. Thistlewood | 48 | Wife | Sorter | Delaware |
| 11 | John G. Hammond | 72 | Head | Farmer | Delaware |
| 12 | Mary E. Hammond THIS PERSON | 71 | Wife | — | Delaware |
| 13 | J. Conrad Hammond | 49 | Son | Carpenter | Delaware |
| 14 | Charles Ed. Jones | 57 | Head | Farmer | Maryland |
| 15 | Laura Smith | 49 | Housekeeper | Sorter | Pennsylvania |
| 16 | Rosa Butler | 21 | Housekeeper | Seamstress | Maryland |
| 17 | Earl Butler | 5 | Daughter-son | — | Maryland |
| 18 | Ralph Butler | 2 | Housekeeper-son | — | Delaware |
| 19 | Amos Smith | 15 | Housekeeper-son | — | Delaware |
| 20 | Harry Tharp | 60 | Head | Farming | Delaware |
| 21 | Agnes B. Tharp | 54 | Wife | — | Pennsylvania |
| 22 | William Wright | 29 | Head | Laborer | Maryland |
| 23 | Gertrude Wright | 21 | Wife | Servant | Maryland |
| 24 | Linden Watson | 48 | Head | Rail Yard Master | Delaware |
| 25 | Alice P. Watson | 51 | Wife | — | Delaware |
| 26 | Edward Watson | 23 | Son | Manager | Delaware |
| 27 | Leon Watson | 22 | Son | Truck Driver | Delaware |
| 28 | Phyllis Watson | 11 | Daughter | — | Delaware |
| 29 | Doris Watson | 10 | Daughter | — | Delaware |
| 30 | Marshall Smith | 26 | Head | Tree Surgery | Idaho |
| 31 | Elaine Smith | 24 | Wife | — | Connecticut |
| 32 | Marshall Smith | 6 | Son | — | New York |
| 33 | James Smith | 4 | Son | — | New York |
| 34 | M. J. Case Crockett | 47 | Head | Manager | Maryland |
| 35 | Florence H. Crockett | 35 | Wife | Puddler | Delaware |
| 36 | William L. James | 14 | Step Son | — | Delaware |
| 37 | Chester A. Porter | 50 | Head | Manager | Delaware |
| 38 | Gertrude Porter | 43 | Wife | Puddler | New Jersey |
| 39 | Walter S. Clendaniel | 52 | Head | Salesman | Delaware |
| 40 | Anna B. Clendaniel | 51 | Wife | — | Delaware |
Related Census Records
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)