ML
Mary Lewis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Lewis across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1867), then head of a 5-person household.
Age 73
b. ~1867
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Lewis |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1867 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Lillian Lewis | Daughter | — | 38 | ~1902 |
| Anna Landon | Daughter | — | 35 | ~1905 |
| John Lewis | Head | — | 75 | ~1865 |
| Clinton Landon | Son | — | 37 | ~1903 |
| Mary Lewis | Spouse | — | 73 | ~1867 |
Census Appearances
1920
None, Maryland
Spouse, age 54
None, Maryland · implied b. ~1866 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| 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
Baltimore, Maryland
Spouse, age 63
Baltimore, Maryland · implied b. ~1867 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| 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
Baltimore-City-County, Maryland
Spouse, age 73
Baltimore-City-County, Maryland · implied b. ~1867 — 5 household members
| Surname | Lewis |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Income (1939) | 0 |
| Highest Grade | 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 Lewis across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lewis
Spouse · 1940 · age 73 · b. ~1867 · 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 — 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-t0627-01532-00458)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marshall P. Norris | 25 | Head | Secretary | Maryland |
| 42 | Ruth M. Norris | 19 | Wife | — | Pennsylvania |
| 43 | Martha R. Norris | 0 | Daughter | — | Maryland |
| 44 | Edwin S. Norris | 69 | Father | — | Maryland |
| 45 | Mary A. Norris | 63 | Mother | — | Maryland |
| 46 | Joseph L. Gessler | 48 | Head | Supervisor | Maryland |
| 47 | Margaret E. Gessler | 44 | Wife | — | Maryland |
| 48 | Joseph L. Jr. Gessler | 16 | Son | — | Maryland |
| 49 | John F. Gessler | 15 | Son | — | Maryland |
| 50 | Carolyn M. Gessler | 14 | Daughter | — | Maryland |
| 51 | Regina C. Gessler | 9 | Daughter | — | Maryland |
| 52 | Joseph Franco | 25 | Head | Bricklayer | Maryland |
| 53 | Mary K. Franco | 24 | Wife | — | West Virginia |
| 54 | Joseph M. Franco | 1 | Son | — | Maryland |
| 55 | Carroll P. Tignall | 33 | Head | Correspondent Clerk | Maryland |
| 56 | Helen E. Tignall | 26 | Wife | — | Maryland |
| 57 | Carroll P. Jr. Tignall | 0 | Son | — | Maryland |
| 58 | Charles H. Brecker | 24 | Head | Packer | Maryland |
| 59 | Vera M. Brecker | 21 | Wife | Stenographer | Maryland |
| 60 | Stephen Lecompte | 42 | Head | Watchman | Maryland |
| 61 | Naomi Lecompte | 36 | Wife | Beautician Assistant | Maryland |
| 62 | Charles L. Wilbourn | 36 | Head | Cashier | Maryland |
| 63 | Thelma B. Wilbourn | 36 | Wife | — | Maryland |
| 64 | Joyce T. Wilbourn | 4 | Daughter | — | Maryland |
| 65 | Leonard F. Williams | 29 | Head | Stock Clerk | Maryland |
| 66 | Erminia Williams | 24 | Wife | Hair Dresser | Italy |
| 67 | George C. Michel | 39 | Head | Prisoner | Austria-Hungary |
| 68 | Katherine B. Michel | 58 | Mother | Proprietor | Austria-Hungary |
| 69 | — | None | — | — | — |
| 70 | — | None | — | — | — |
| 71 | Harvey A. Stambaugh | 58 | Head | Boiler Maker | Pennsylvania |
| 72 | Ethel M. Stambaugh | 56 | Wife | — | Pennsylvania |
| 73 | Earl A. Stambaugh | 35 | Son | Mechanic | Maryland |
| 74 | Thelma M. Gervais | 32 | Daughter | — | Maryland |
| 75 | Arlene M. Gervais | 9 | Granddaughter | — | Pennsylvania |
| 76 | John T. Lewis | 75 | Head | Blacksmith Helper | Maryland |
| 77 | Mary E. Lewis THIS PERSON | 73 | Wife | — | Maryland |
| 78 | Lillian M. Lewis | 38 | Daughter | File Clerk | Maryland |
| 79 | Clinton W. Landon | 37 | Son | Operator - One Man Car | Virginia |
| 80 | Anna E. Landon | 35 | Daughter | — | 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)