MS
Mary Summers — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Maryland
Our Model Tree links this Mary Summers across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1907), then head of a 2-person household.
Age 33
b. ~1907
Female
Head
Born: Maryland
Divorced
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Maryland |
| Surname | Summers |
| Given Name | Mary J. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Divorced |
| Birthplace | Maryland |
| 1935 Residence (City) | Silver Spring |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | Operator |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 250 |
| Highest Grade | H-4 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Operator |
| Township / Ward | Silver Spring Woodside Pt |
| Est. Birth Year | ~1907 |
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 Summers | Head | — | 33 | ~1907 |
| Robt Summers | Son | — | 14 | ~1926 |
Census Appearances
1920
Montgomery, Maryland
Other, age 12
Montgomery, Maryland · implied b. ~1908 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Somers |
| Given Name | Martha |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Servant |
| Industry | Private family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Montgomery, Maryland
Other, age 21
Montgomery, Maryland · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Summers |
| Given Name | Mary |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Servant |
| Industry | Private Home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Montgomery-County, Maryland
Head, age 33
Montgomery-County, Maryland · implied b. ~1907 — 2 household members
| Surname | Summers |
| Given Name | Mary J. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Divorced |
| Birthplace | Maryland |
| 1935 Residence (City) | Silver Spring |
| 1935 Residence (County) | Montgomery |
| Occupation | Operator |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 250 |
| Highest Grade | H-4 |
| 1935 Residence | Maryland |
| 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 Summers 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 Summers
Head · 1940 · age 33 · b. ~1907 · Maryland
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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 — Montgomery-County, Maryland
Open full size
1940 US Federal Census — Montgomery-County, Maryland
Page Contents
6 people indexed on this census page (nara:1940:m-t0627-01555-00630)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary J. Summers THIS PERSON | 33 | Head | Operator | Maryland |
| 2 | Robt. Summers | 14 | Son | — | D.C. |
| 3 | Joseph M. Ashworth | 38 | Head | Salesman | Virginia |
| 4 | Nila F. Ashworth | 32 | Wife | Stenographer | Virginia |
| 5 | Robert Spengler Stark | 23 | Lodger | Statistician | Missouri |
| 6 | Francis Allen M. Goergen | 53 | Head | Doctor | France |
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)