ML
Martha Lee — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Martha Lee across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1906), then head of a 10-person household.
Age 34
b. ~1906
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Lee |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1906 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Robert Lee | Son | — | 13 | ~1927 |
| Betty Lee | Daughter | — | 1 | ~1939 |
| Alfred Lee | Son | — | 3 | ~1937 |
| Sam Lee | Son | — | 15 | ~1925 |
| Louis Lee | Head | — | 52 | ~1888 |
| William Lee | Son | — | 12 | ~1928 |
| Marietta Lee | Daughter | — | ~1940 | |
| Melvin Lee | Son | — | 2 | ~1938 |
| Dorothy Lee | Daughter | — | 10 | ~1930 |
| Martha Lee | Spouse | — | 34 | ~1906 |
Census Appearances
1920
X, Maryland
Other, age 13
X, Maryland · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lee |
| Given Name | Martha |
| Relationship to Head | Grand Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
None, Maryland
Other, age 23
None, Maryland · implied b. ~1907 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lee |
| Given Name | Martha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | W |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 34
Baltimore-City-County, Maryland · implied b. ~1906 — 10 household members
| Surname | Lee |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Class of Worker | 0 |
| Highest Grade | No 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 Martha Lee across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Lee
Spouse · 1940 · age 34 · b. ~1906 · 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-t0627-01509-00541)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James O'Brady | 40 | Head | Laborer | Maryland |
| 42 | Lizzie O'Brady | 42 | Wife | — | New Jersey |
| 43 | Ida Harris | 28 | Head | — | Maryland |
| 44 | Edward Ogden | 11 | Son | — | Maryland |
| 45 | Leroy Ogden | 10 | Son | — | Maryland |
| 46 | George Harris | 22 | Lodger | Laborer | Maryland |
| 47 | Hellen Mchoney | 26 | Lodger | Maid | Virginia |
| 48 | Al Saunders | 31 | Lodger | Laborer | Virginia |
| 49 | Lee Austin | 49 | Head | Laborer | Virginia |
| 50 | Daisy Austin | 36 | Wife | — | Virginia |
| 51 | Edward Jenkins | 25 | Head | Laborer | South Carolina |
| 52 | Odella Jenkins | 21 | Wife | — | Virginia |
| 53 | Lyna Jenkins | 3 | Daughter | — | Maryland |
| 54 | Sherie Jenkins | 1 | Son | — | Maryland |
| 55 | Mary Clay | 37 | Head | Maid | Virginia |
| 56 | Dicey Williamson | 45 | Partner | Maid | North Carolina |
| 57 | Robert Williamson | 19 | Partner | Laborer | North Carolina |
| 58 | Harris Williamson | 9 | Partner | — | North Carolina |
| 59 | Louis Lee | 52 | Head | Laborer | Virginia |
| 60 | Martha Lee THIS PERSON | 34 | Wife | — | Maryland |
| 61 | Sam Lee | 15 | Son | — | Maryland |
| 62 | William Lee | 12 | Son | — | Maryland |
| 63 | Robert Lee | 13 | Son | — | Maryland |
| 64 | Dorothy Lee | 10 | Daughter | — | Maryland |
| 65 | Alfred Lee | 3 | Son | — | Maryland |
| 66 | Melvin Lee | 2 | Son | — | Maryland |
| 67 | Betty Lee | 1 | Daughter | — | Maryland |
| 68 | Marietta Lee | 0 | Daughter | — | Maryland |
| 69 | Olie Henry | 49 | Head | — | Maryland |
| 70 | Ernest Johnson | 21 | Son | Laborer | Maryland |
| 71 | Ethel Lee Johnson | 19 | Daughter in law | — | Maryland |
| 72 | Ethel Johnson | 1 | Granddaughter | — | Maryland |
| 73 | Infant Johnson | 0 | Granddaughter | — | Maryland |
| 74 | George Atkinson | 57 | Head | Laborer | Maryland |
| 75 | Lucy Atkinson | 52 | Wife | — | Maryland |
| 76 | Leon Hopkins | 45 | Lodger | Laborer | Maryland |
| 77 | James Ellman | 13 | Lodger | New Worker | Maryland |
| 78 | Othel Murray | 32 | Head | — | Maryland |
| 79 | Ella Murray | 7 | Daughter | — | Maryland |
| 80 | William Murray | 10 | Son | — | 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)