IT
Isaac Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Isaac Thomas across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 3-person household.
Age 50
b. ~1890
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | head |
| Sex | M |
| Color / Race | Black |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | Labor |
| Industry | Gas Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Labor |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1890 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Estelle Thomas | Spouse | — | 45 | ~1895 |
| Isaac Thomas | Head | — | 50 | ~1890 |
| Myrtle Noah | Daughter | — | 20 | ~1920 |
Census Appearances
1920
Baltimore, Maryland
Head, age 34
Baltimore, Maryland · implied b. ~1886 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Contractor |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 40
Baltimore, Maryland · implied b. ~1890 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12.00 |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 50
Baltimore-City-County, Maryland · implied b. ~1890 — 3 household members
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | head |
| Sex | M |
| Color / Race | Black |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Occupation | Labor |
| Industry | Gas Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | No 0 |
| 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 Isaac Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Isaac Thomas
Head · 1940 · age 50 · b. ~1890 · 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-t0627-01535-00200)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Williams | 32 | lodger | Labor | Maryland |
| 42 | Jerry Mckenzie | 51 | head | Chief Cook | Jamaica |
| 43 | Lillian Mckenzie | 46 | wife | House Work | Maryland |
| 44 | Robert Lee | 53 | head | Labor | Maryland |
| 45 | Alice Lee | 42 | wife | House Work | Maryland |
| 46 | Pauline Brown | 42 | head | Housework | Maryland |
| 47 | Evelyn Brown | 22 | daughter | — | Maryland |
| 48 | Richard Brown | 20 | son | — | Maryland |
| 49 | Nelson Parker | 44 | head | Laborer | N. Carolina |
| 50 | Margaret Parker | 37 | wife | Housework | Maryland |
| 51 | Alice Young | 33 | head | Nurse | Maryland |
| 52 | Fleming Banks | 39 | head | Wiper | Virginia |
| 53 | Mittilla Banks | 36 | wife | — | N. Carolina |
| 54 | Lonnie Artis | 34 | head | Manager | N. Carolina |
| 55 | Ada Artis | 32 | wife | New Worker | Virginia |
| 56 | Murphy Artis | 17 | son | Laborer | N. Carolina |
| 57 | Andrew Hines | 35 | lodger | — | Virginia |
| 58 | Andrew Watkins | 70 | lodger | Laborer | Maryland |
| 59 | George Holley | 34 | lodger | — | N. Carolina |
| 60 | James Butler | 28 | lodger | — | Maryland |
| 61 | Helen Scott | 42 | head | New Worker | Maryland |
| 62 | Kathryn Scott | 23 | daughter | Packer | Maryland |
| 63 | Robert Scott | 21 | son | Helper | Maryland |
| 64 | Thomas Scott | 15 | son | — | Maryland |
| 65 | Alfred Zirchos | 4 | lodger | — | Maryland |
| 66 | Elmira Sullivan | 57 | lodger | Operator | Maryland |
| 67 | James Harris | 55 | head | Hauler | Virginia |
| 68 | Eva Harris | 50 | wife | — | Virginia |
| 69 | Edith Harris | 25 | daughter | — | Maryland |
| 70 | James Harris | 10 | grandson | — | Maryland |
| 71 | Ronald Harris | 7 | grandson | — | Maryland |
| 72 | Johanna Carter | 48 | head | Maid | N. Carolina |
| 73 | James Carter | 30 | son | Driver | Virginia |
| 74 | Inez Carter | 27 | daughter | Maid | Virginia |
| 75 | Floyd Carter | 21 | son | Driver | Virginia |
| 76 | Morris Carter | 17 | son | Operator | Virginia |
| 77 | Charles Hanger | 55 | lodger | Stevedore | N. Carolina |
| 78 | Isaac Thomas THIS PERSON | 50 | head | Labor | Maryland |
| 79 | Estelle Thomas | 45 | wife | — | Maryland |
| 80 | Myrtle Noah | 20 | daughter | Housework | 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)