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John Summers — 1940 US Census Record
Model Tree available1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this John Summers across the 1920, 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Summers |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Braddock Election District 24 |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Occupation | Operator |
| Industry | Of Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Operator |
| Township / Ward | Braddock Election District 24 |
| Est. Birth Year | ~1913 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Summers | Head | — | 27 | ~1913 |
| Roy Summers | Son | — | 2 | ~1938 |
| John Summers | Son | — | 3 | ~1937 |
| Ruth Summers | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Frederick, Maryland
Son, age 7
Frederick, Maryland · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Summers |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Frederick, Maryland
Son, age 17
Frederick, Maryland · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Summers |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Frederick-County, Maryland
Head, age 27
Frederick-County, Maryland · implied b. ~1913 — 4 household members
| Surname | Summers |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Braddock Election District 24 |
| 1935 Residence (County) | Frederick |
| Occupation | Operator |
| Industry | Of Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H 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 John Summers across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Summers (~0.92 confidence) and father John Summers (~0.92 confidence) and mother L Summers (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Summers
b. ~1879
Source father
● Household
· direct · ~0.92
Father
John Summers
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
L Summers
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Summers
Head · 1940 · age 27 · b. ~1913 · 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 — Frederick-County, Maryland
Open full size
1940 US Federal Census — Frederick-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01549-00626)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Hull | 37 | Brother | Mechanic | Maryland |
| 2 | Jerome Hull | 30 | Brother | Laborer | Maryland |
| 3 | Mary Hull | 80 | Mother | — | Maryland |
| 4 | Murray Adella Hull | 36 | Boarder | Designer | Maryland |
| 5 | Robert B. Gross | 32 | Head | Manager | Maryland |
| 6 | Eleanor B. Gross | 19 | Wife | — | Maryland |
| 7 | Jesse Smith | 33 | Head | Laborer | Maryland |
| 8 | Lottie E. Smith | 29 | Wife | — | Maryland |
| 9 | Eugene W. Smith | 12 | Son | — | Maryland |
| 10 | Melvin R. Smith | 10 | Son | — | Maryland |
| 11 | Joan A. Smith | 7 | Daughter | — | Maryland |
| 12 | Leah Belle Smith | 5 | Daughter | — | Maryland |
| 13 | John W. Summers THIS PERSON | 27 | Head | Operator | Maryland |
| 14 | Ruth S. Summers | 26 | Wife | — | Maryland |
| 15 | John J. Jr. Summers | 3 | Son | — | Maryland |
| 16 | Roy E. Summers | 2 | Son | — | Maryland |
| 17 | Grace B. Summers | 57 | Head | Operator | Maryland |
| 18 | John M. B. Summers | 61 | Husband | — | Maryland |
| 19 | Grace B. Summers | 20 | Daughter | — | Maryland |
| 20 | Paul H. Summers | 18 | Son | — | Maryland |
| 21 | Charles E. Metzger | 51 | Head | Janitor | Maryland |
| 22 | Anna L. Metzger | 48 | Wife | — | Maryland |
| 23 | Fred B. Metzger | 20 | Son | — | Maryland |
| 24 | Clara V. Roland | 85 | Mother in law | — | Maryland |
| 25 | S. L. Bast | 93 | Head | Blacksmith | Maryland |
| 26 | Daisy Bast | 60 | Daughter | — | Maryland |
| 27 | Eugene Dondson | 42 | Boarder | Cook | Maryland |
| 28 | Maud Dondson | 41 | Boarder | — | Maryland |
| 29 | Mathew Dondson | 22 | Boarder | Plumber | Maryland |
| 30 | Edward Totson | 33 | Head | Operator | Maryland |
| 31 | Agnes D. Totson | 29 | Wife | — | Maryland |
| 32 | Leslie A. Totson | 21 | Brother | Laborer | Maryland |
| 33 | Annie Steff | 70 | Mother in law | — | Maryland |
| 34 | Thomas J. Rickett | 32 | Head | Metal Worker | Maryland |
| 35 | Ruth E. Rickett | 26 | Wife | — | Maryland |
| 36 | Shirley A. Rickett | 8 | Daughter | — | Maryland |
| 37 | Ruth R. Rickett | 7 | Daughter | — | Maryland |
| 38 | Doris S. Rickett | 4 | Daughter | — | Maryland |
| 39 | Virgie M. Smith | 43 | Mother in law | Seamstress | Maryland |
| 40 | George A. Tritapoe | 65 | Head | Operator | Maryland |
Pedigree Summary
John
Gen 1 · 3 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)