MC
Mary Chase — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Calvert-County, Maryland
Our Model Tree links this Mary Chase across the 1930 and 1940 US Censuses in Calvert-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Calvert-County, Maryland |
| Surname | Chase |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | First Election District |
| 1935 Residence (County) | Calvert |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | First Election District |
| Est. Birth Year | ~1924 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Emma Chase | Spouse | — | 44 | ~1896 |
| Mary Chase | Daughter | — | 16 | ~1924 |
| Raymond Chase | Son | — | 20 | ~1920 |
| Eddie Chase | Son | — | 8 | ~1932 |
| Claude Chase | Son | — | 10 | ~1930 |
| Berton Chase | Son | — | 13 | ~1927 |
| John Chase | Head | — | 57 | ~1883 |
| Are Chase | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Calvert, Maryland
Other, age 5
Calvert, Maryland · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chase |
| Given Name | Mary E |
| Relationship to Head | Grand Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Calvert-County, Maryland
Daughter, age 16
Calvert-County, Maryland · implied b. ~1924 — 8 household members
| Surname | Chase |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | First Election District |
| 1935 Residence (County) | Calvert |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 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 Chase across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Chase
Daughter · 1940 · age 16 · b. ~1924 · Maryland
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Sibling
Are Chase
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claude Chase
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Berton Chase
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Chase
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eddie Chase
Sibling · 1940 · age 8
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
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-t0627-01543-00079)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alma H. Hawkins | 15 | Daughter | — | Maryland |
| 42 | Mary Jane Hawkins | 5 | Daughter | — | Maryland |
| 43 | Zachary Freeland | 72 | Cousin | — | Maryland |
| 44 | Sarah E. Freeland | 65 | Cousin | — | Maryland |
| 45 | Eddie Berry | 68 | Head | Laborer | Maryland |
| 46 | Lemuel Jackson | 76 | Head | — | Maryland |
| 47 | Mary E. Jackson | 75 | Wife | — | Maryland |
| 48 | Isaac Washington | 35 | Son | Laborer | Maryland |
| 49 | Henrietta Washington | 12 | Gr. daughter | — | Maryland |
| 50 | Gertrude Washington | 2 | Gr. daughter | — | Maryland |
| 51 | Jos. B. Lander | 49 | Head | Laborer | Maryland |
| 52 | Hennie Lander | 52 | Wife | Cook | Maryland |
| 53 | Maxine Lander | 18 | Daughter | House Cleaning | Maryland |
| 54 | John T. Chase | 57 | Head | Laborer | Maryland |
| 55 | Emma F. Chase | 44 | Wife | — | Maryland |
| 56 | Raymond Chase | 20 | Son | Laborer | Maryland |
| 57 | Are F. Chase | 18 | Daughter | Cook | Maryland |
| 58 | Mary E. Chase THIS PERSON | 16 | Daughter | — | Maryland |
| 59 | Berton Chase | 13 | Son | — | Maryland |
| 60 | Claude Chase | 10 | Son | — | Maryland |
| 61 | Eddie Chase | 8 | Son | — | Maryland |
| 62 | Walter Gott | 32 | Head | Farmer | Maryland |
| 63 | Alice Gott | 28 | Wife | — | Maryland |
| 64 | Marmon Gott | 7 | Son | — | Maryland |
| 65 | Ruby Gott | 5 | Daughter | — | Maryland |
| 66 | Doris Gott | 3 | Daughter | — | Maryland |
| 67 | Reuben H. Gott | 69 | Uncle | — | Maryland |
| 68 | Julia A. Johnson | 79 | Head | — | Maryland |
| 69 | Eugene Johnson | 37 | Son | Farmer | Maryland |
| 70 | Lillian S. Johnson | 52 | Daughter-in-law | Cook | Maryland |
| 71 | Eugene B. Jr. Johnson | 24 | Son | Oyster Shucker | Maryland |
| 72 | Clifton G. Johnson | 18 | Gr. son | Laborer | Maryland |
| 73 | Mckinley Johnson | 18 | Gr. son | Laborer | Maryland |
| 74 | Orville J. Howe | 48 | Head | Laborer | Maryland |
| 75 | Dora Howe | 48 | Wife | — | Maryland |
| 76 | Amanda Howe | 22 | Daughter | — | Maryland |
| 77 | Lemuel S. Howe | 21 | Son | Laborer | Maryland |
| 78 | Annie L. Howe | 19 | Daughter | — | Maryland |
| 79 | Mildred Howe | 16 | Daughter | — | Maryland |
| 80 | Charity Wallace | 69 | Mother-in-law | — | Maryland |
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)