MC
Mary Curtis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Calvert-County, Maryland
Our Model Tree links this Mary Curtis across the 1920, 1930 and 1940 US Censuses in Calvert-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 6-person household.
Age 55
b. ~1885
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Calvert-County, Maryland |
| Surname | Curtis |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Dowells |
| 1935 Residence (County) | Calvert |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Dowells |
| Est. Birth Year | ~1885 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Virginia Bishop | Daughter | — | 20 | ~1920 |
| Walter Curtis | Head | — | 57 | ~1883 |
| Joseph Bishop | Other | — | 25 | ~1915 |
| Nellie Watts | Other | — | 73 | ~1867 |
| Walter Curtis | Son | — | 17 | ~1923 |
| Mary Curtis | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Calvert, Maryland
Spouse, age 32
Calvert, Maryland · implied b. ~1888 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 32 |
| 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
Calvert, Maryland
Other, age 45
Calvert, Maryland · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | Mary E |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Calvert-County, Maryland
Spouse, age 55
Calvert-County, Maryland · implied b. ~1885 — 6 household members
| Surname | Curtis |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Dowells |
| 1935 Residence (County) | Calvert |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 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 Curtis 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 Curtis
Spouse · 1940 · age 55 · b. ~1885 · 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 — Calvert-County, Maryland
Open full size
1940 US Federal Census — Calvert-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01543-00030)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sara R. Hyson | 66 | Mother-in-law | — | Virginia |
| 2 | William S. Moore | 23 | Head | Waterman | Maryland |
| 3 | Catherine S. Moore | 22 | Wife | — | Maryland |
| 4 | M. Dolores Moore | 4 | Daughter | — | Maryland |
| 5 | William S. Moore | 0 | Son | — | Maryland |
| 6 | Daniel Dorrell | 20 | Head | Laborer | Maryland |
| 7 | Thelma F. Dorrell | 20 | Wife | — | Maryland |
| 8 | Patricia Ann Dorrell | 0 | Daughter | — | Maryland |
| 9 | Morton H. Smith | 70 | Head | — | Maryland |
| 10 | Nathaniel M. Dare | 51 | Head | — | Maryland |
| 11 | Beulah S. Dare | 28 | Daughter | — | Maryland |
| 12 | Malcolm H. Dare | 24 | Son | Carpenter | Maryland |
| 13 | Walter S. Curtis | 57 | Head | Caulking | Maryland |
| 14 | Mary E. Curtis THIS PERSON | 55 | Wife | — | Maryland |
| 15 | Walter S. Jr. Curtis | 17 | Son | — | Maryland |
| 16 | Virginia M. Bishop | 20 | Daughter | — | Maryland |
| 17 | Joseph E. Bishop | 25 | Son-in-law | — | Maryland |
| 18 | Nellie A. Watts | 73 | Mother-in-law | — | Maryland |
| 19 | Thomas W. Gross | 29 | Head | Waterman | Maryland |
| 20 | Estelle M. Gross | 24 | Wife | — | Maryland |
| 21 | Oswald T. Gross | 8 | Son | — | Maryland |
| 22 | Willis A. Gross | 4 | Son | — | Maryland |
| 23 | Loraine T. Gross | 1 | Daughter | — | Maryland |
| 24 | Benjamin Savage | 70 | Head | — | Maryland |
| 25 | Susie Savage | 61 | Wife | — | Maryland |
| 26 | Thelma S. Hayes | 19 | Daughter | — | Maryland |
| 27 | Warren Hayes | 17 | Grandson | Waterman | Maryland |
| 28 | George A. Curtis | 39 | Head | Shucker | Maryland |
| 29 | Bertha R. Curtis | 39 | Wife | — | Maryland |
| 30 | Vincent Johnson | 38 | Brother-in-law | Laborer | Maryland |
| 31 | W. Preston Done | 45 | Head | Waterman | Maryland |
| 32 | Verna H. Done | 35 | Wife | — | Maryland |
| 33 | Barbara J. Done | 3 | Daughter | — | Maryland |
| 34 | Katherine R. Done | 0 | Daughter | — | Maryland |
| 35 | Edison G. Hummore | 35 | Head | Attendant | South Carolina |
| 36 | Zora B. Hummore | 33 | Wife | Teacher | Virginia |
| 37 | Mary Q. Young | 24 | Boarder | Teacher | Virginia |
| 38 | Cillie Harris | 22 | Boarder | Servant | Maryland |
| 39 | Daniel D. Barrett | 57 | Head | Packer | Maryland |
| 40 | Annie B. Barrett | 50 | Wife | Proprietress | Maryland |
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)