WT
William Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this William Thomas across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents George & John — first a son (b.~1917), then head of a 8-person household.
Age 23
b. ~1917
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Thomas |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Porter |
| Industry | Club House |
| Class of Worker | PW |
| Hours Worked | 64 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Porter |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1917 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Helen Thomas | Daughter | — | 29 | ~1911 |
| Ruth Williams | Daughter | — | 22 | ~1918 |
| Emma Thomas | Head | — | 61 | ~1879 |
| Shirley Williams | Other | — | 4 | ~1936 |
| Ella Mcgruder | Other | — | 28 | ~1912 |
| James Jones | Other | — | 31 | ~1909 |
| Grafton Williams | Other | — | 2 | ~1938 |
| William Thomas | Son | — | 23 | ~1917 |
Census Appearances
1920
None, Maryland
Son, age 1
None, Maryland · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 1 |
| 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
Son, age 12
Baltimore, Maryland · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 23
Baltimore-City-County, Maryland · implied b. ~1917 — 8 household members
| Surname | Thomas |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Porter |
| Industry | Club House |
| Class of Worker | PW |
| Hours Worked | 64 |
| Highest Grade | Hs 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 William Thomas across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father George Thomas (~0.92 confidence) and father John Thomas (~0.92 confidence) and mother Mary Thomas (~0.92 confidence) and mother Mary Thomas (~0.92 confidence) and mother Emma Thomas (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Thomas
b. ~1895
Source father
● Household
· direct · ~0.92
Father
John Thomas
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Mary Thomas
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Mary Thomas
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Emma Thomas
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Thomas
Son · 1940 · age 23 · b. ~1917 · Maryland
★ You are viewing this record
Sibling
Helen Thomas
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Williams
Sibling · 1940 · age 22
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-t0627-01523-00432)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Taylor | 43 | Lodger | Butler | Virginia |
| 42 | Rebecca Taylor | 45 | Lodger | Maid | Virginia |
| 43 | Rosemont Taylor | 33 | Lodger | Janitor | Virginia |
| 44 | William Epps | 40 | Head | Janitor | Virginia |
| 45 | Estelle Epps | 38 | Wife | Maid | Virginia |
| 46 | Leonard Harris | 22 | Nephew | Chauffeur | Virginia |
| 47 | Lylbelle Harris | 17 | Wife | — | Maryland |
| 48 | Charles Honest | 47 | Head | Janitor | Louisiana |
| 49 | Louise Honest | 45 | Wife | — | Louisiana |
| 50 | John Honest | 21 | Son | Chauffeur | Maryland |
| 51 | Arthur Honest | 18 | Son | Messenger | Maryland |
| 52 | Hilda Honest | 15 | Daughter | — | Maryland |
| 53 | Edward W. Jones | 34 | Head | Butler | Maryland |
| 54 | Helen Jones | 32 | Wife | Maid | Maryland |
| 55 | James Douglass | 38 | Head | Chauffeur | Maryland |
| 56 | Helen Douglass | 36 | Wife | — | Maryland |
| 57 | Regina Douglass | 14 | Daughter | — | Maryland |
| 58 | Robert J. Davis | 45 | Head | Cook | Virginia |
| 59 | Flora Davis | 39 | Wife | — | Virginia |
| 60 | Daniel Laws | 47 | Head | Waiter | Maryland |
| 61 | Ada Laws | 52 | Wife | — | Maryland |
| 62 | Lucy Mack | 45 | Partner | Laundress | Virginia |
| 63 | Harry Hill | 45 | Lodger | Presser | Virginia |
| 64 | Fred David | 65 | Lodger | Waiter | Virginia |
| 65 | Walker Epps | 58 | Head | Porter | Maryland |
| 66 | Elizabeth Epps | 53 | Wife | — | Maryland |
| 67 | Samuel Richardson | 50 | Lodger | Janitor | Maryland |
| 68 | Emma Thomas | 61 | Head | — | Virginia |
| 69 | Helen Thomas | 29 | Daughter | Maid | Maryland |
| 70 | William Thomas THIS PERSON | 23 | Son | Porter | Maryland |
| 71 | Ruth Williams | 22 | Daughter | Maid | Maryland |
| 72 | Shirley Williams | 4 | Granddaughter | — | Maryland |
| 73 | Grafton Williams | 2 | Grandson | — | Maryland |
| 74 | Ella Mcgruder | 28 | Lodger | — | Maryland |
| 75 | James Jones | 31 | Lodger | Busboy | Virginia |
| 76 | Robert Polmsh|Polmish | 50 | Head | Butler | N. Carolina |
| 77 | Maggie Polmsh|Polmish | 40 | Wife | — | Virginia |
| 78 | Sadie Kelly | 24 | Head | Maid | Virginia |
| 79 | Revere Kelly | 7 | Son | — | Maryland |
| 80 | Permit Wilkins | 18 | Nephew | — | New York |
Related Census Records
Pedigree Summary
William + 2 siblings
Gen 1 · 5 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)