RT
Robert Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Robert Thomas across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Marie & Charles — first a son (b.~1922), then head of a 7-person household.
Age 18
b. ~1922
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Laborer |
| Industry | Rubber Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 480 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1922 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Annie Thomas | Daughter | — | 37 | ~1903 |
| Charles Thomas | Head | — | 72 | ~1868 |
| Nelson Franklin | Other | — | 11 | ~1929 |
| Robert Franklin | Other | — | 40 | ~1900 |
| Robert Thomas | Son | — | 18 | ~1922 |
| Clarence Thomas | Son | — | 14 | ~1926 |
| Lottie Thomas | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Baltimore, Maryland
Son, age 2
Baltimore, Maryland · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| 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 11
Baltimore, Maryland · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 18
Baltimore-City-County, Maryland · implied b. ~1922 — 7 household members
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Laborer |
| Industry | Rubber Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 480 |
| Highest Grade | 8 |
| 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 Robert Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Marie Graves (~0.92 confidence) and father Charles Thomas (~0.92 confidence) and father John Thomas (~0.92 confidence) and mother Lottie Thomas (~0.92 confidence) and mother Annie Thomas (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Marie Graves
b. ~1855
Source mother
● Household
· direct · ~0.92
Father
Charles Thomas
b. ~1868
Source father
● Household
· direct · ~0.92
Father
John Thomas
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Lottie Thomas
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Annie Thomas
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Thomas
Son · 1940 · age 18 · b. ~1922 · Maryland
★ You are viewing this record
Sibling
Annie Thomas
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarence Thomas
Sibling · 1940 · age 14
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-t0627-01534-00581)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret O'Connor | 42 | Head | Owner | Maryland |
| 42 | Ellen O'Connor | 44 | Sister | Clerk | Maryland |
| 43 | Joseph A. Drayton | 34 | Head | Waiter | Texas |
| 44 | Anna D. Drayton | 32 | Wife | — | Virginia |
| 45 | Hazel Flippo | 14 | Daughter | — | Virginia |
| 46 | Irene Flippo | 11 | Daughter | — | Virginia |
| 47 | H. Mac Flippo | 9 | Step son | — | Virginia |
| 48 | Daisy L. Hershey | 54 | Head | — | Maryland |
| 49 | Hana Hershey | 31 | Daughter | — | Maryland |
| 50 | Joseph D. Burton | 33 | Head | Laborer | Maryland |
| 51 | Anna May Burton | 30 | Wife | — | Maryland |
| 52 | Robert Butler | 33 | Head | Clerk | North Carolina |
| 53 | Almeta Butler | 24 | Wife | — | North Carolina |
| 54 | Louise Curry | 36 | Head | — | Virginia |
| 55 | Dorothy Curry | 20 | Daughter | Housework | Virginia |
| 56 | Frederick Curry | 18 | Son | — | Maryland |
| 57 | Samuel Curry | 14 | Son | — | Maryland |
| 58 | Edna Curry | 10 | Daughter | — | Maryland |
| 59 | Lawrence Curry | 4 | Son | — | Maryland |
| 60 | Charles H. Thomas | 72 | Head | Helper | Maryland |
| 61 | Lottie Thomas | 55 | Wife | — | Maryland |
| 62 | Annie Thomas | 37 | Daughter | Maid | Maryland |
| 63 | Robert Thomas THIS PERSON | 18 | Son | Laborer | Maryland |
| 64 | Clarence Thomas | 14 | Son | — | Maryland |
| 65 | Robert Franklin | 40 | Lodger | Porter | Maryland |
| 66 | Nelson Franklin | 11 | Lodger | — | Maryland |
| 67 | Duffield Vesterman | 40 | Head | Loader | Virginia |
| 68 | Edith Vesterman | 36 | Wife | — | Maryland |
| 69 | Albert Vesterman | 2 | Son | — | Maryland |
| 70 | Nelson Figgs | 39 | Lodger | Loader | North Carolina |
| 71 | Almeta James | 34 | Head | Laborer | Virginia |
| 72 | Edna James | 14 | Daughter | — | Virginia |
| 73 | Emmet Graham | 48 | Lodger | Laborer | Virginia |
| 74 | Emma Crowe | 76 | Head | — | Maryland |
| 75 | Edith Crowe | 52 | Daughter | Matron | Maryland |
| 76 | George Crowe | 48 | Son | Carpenter | Maryland |
| 77 | Stanley L. Holly | 51 | Head | Stationary Engineer | Virginia |
| 78 | Gertie V. Holly | 51 | Wife | — | Virginia |
| 79 | Anna Holly | 13 | Daughter | — | Virginia |
| 80 | Bernard Bishop | 7 | Grandson | — | Maryland |
Pedigree Summary
Robert + 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)