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Gertrude Lewis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Gertrude Lewis across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Frank & Augusta — first a daughter (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Lewis |
| Given Name | Gertrude M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Clerical Worker |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 850 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Clerical Worker |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1915 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Gertrude | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Lewis | Daughter | — | 25 | ~1915 |
| Hazel Cekarek | Daughter | — | 30 | ~1910 |
| Shirley Lewis | Daughter | — | 20 | ~1920 |
| James Cekarek | Other | — | 30 | ~1910 |
| Augusta Lewis | Head | — | 59 | ~1881 |
Census Appearances
1920
None, Maryland
Daughter, age 5
None, Maryland · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| 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 |
1930
Baltimore, Maryland
Daughter, age 15
Baltimore, Maryland · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Virginia |
| Occupation | Clerk-Office |
| Industry | Insurance |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 25
Baltimore-City-County, Maryland · implied b. ~1915 — 5 household members
| Surname | Lewis |
| Given Name | Gertrude M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Occupation | Clerical Worker |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 850 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Gertrude Lewis across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Frank Lewis (~0.92 confidence) and mother Augusta Lewis (~0.92 confidence) and mother Augusta Lewis (~0.92 confidence) and mother Augusta Lewis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Lewis
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Augusta Lewis
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Augusta Lewis
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Augusta Lewis
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Gertrude Lewis
Daughter · 1940 · age 25 · b. ~1915 · Maryland
★ You are viewing this record
Sibling
Hazel Cekarek
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Lewis
Sibling · 1940 · age 20
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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01536-00476)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hazel M Mulholland | 17 | Daughter | — | Maryland |
| 2 | Annie M Solley | 50 | Head | — | Maryland |
| 3 | Thomas S Solley | 32 | Son | Clerk | Maryland |
| 4 | Lawrence A Solley | 28 | Son | Bartender | Maryland |
| 5 | Annabelle Solley | 25 | Daughter | Packer | Maryland |
| 6 | John H Shoemaker | 51 | Head | Mechanic | Maryland |
| 7 | Susie R Shoemaker | 51 | Wife | — | Virginia |
| 8 | Holland Shoemaker | 16 | Son | — | Maryland |
| 9 | Marian S Shoemaker | 15 | Daughter | — | Maryland |
| 10 | Mary E Shoemaker | 11 | Daughter | — | Maryland |
| 11 | Edward J Helmstetter | 31 | Head | Storeroom Keeper | Maryland |
| 12 | Adam W Helmstetter | 29 | Son | Operator | Maryland |
| 13 | Augusta Lewis | 59 | Head | — | Maryland |
| 14 | Gertrude M Lewis THIS PERSON | 25 | Daughter | Clerical Worker | Maryland |
| 15 | Shirley E Lewis | 20 | Daughter | Clerical Worker | Maryland |
| 16 | James Cekarek | 30 | In Law | Crane Operator | Pennsylvania |
| 17 | Hazel E Cekarek | 30 | Daughter | Typist | Maryland |
| 18 | William E Eberhart | 45 | Head | Boatbuilder | Virginia |
| 19 | Hilda M Eberhart | 37 | Wife | — | Maryland |
| 20 | Sylvia M Eberhart | 15 | Daughter | — | Maryland |
| 21 | William E Jr Eberhart | 8 | Son | — | Maryland |
| 22 | Auburn F Upton | 36 | Head | Still Operator | Maryland |
| 23 | Mildred E Upton | 32 | Wife | Saleslady | Maryland |
| 24 | Francis A Lertz | 33 | Head | Salesman | Maryland |
| 25 | Lillian M Lertz | 32 | Wife | — | Maryland |
| 26 | Mary C Lertz | 8 | Daughter | — | Maryland |
| 27 | June F Lertz | 6 | Daughter | — | Maryland |
| 28 | Calvin L Clark | 33 | Head | Fireman | Maryland |
| 29 | Mildred C Clark | 32 | Wife | — | Maryland |
| 30 | Audrey E Clark | 11 | Daughter | — | Maryland |
| 31 | George R Clark | 8 | Son | — | Maryland |
| 32 | Patricia A Clark | 4 | Daughter | — | Maryland |
| 33 | Agnes A B Flagg | 60 | Head | — | Czechoslovakia |
| 34 | Cyril Heffiger | 38 | Husband | Mate On Ship | Holland |
| 35 | Marie Heffiger | 32 | Wife | — | Maryland |
| 36 | Lorraine D Heffiger | 10 | Daughter | — | Maryland |
| 37 | — | None | — | — | — |
| 38 | Joseph N Johnson | 55 | Head | Rigger | Maryland |
| 39 | Mabel F Johnson | 53 | Wife | — | Maryland |
| 40 | Harry Esser | 61 | Head | Dig Setter | Maryland |
Pedigree Summary
Gertrude + 2 siblings
Gen 1 · 4 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)