JT
John Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Thomas across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Chas & Angeline — first a head (b.~1905), then head of a 4-person household.
Age 35
b. ~1905
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Thomas |
| Given Name | John H. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| Additional Details | |
| Occupation | Carpenter |
| Industry | For Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 350 |
| Highest Grade | Hs 4 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Carpenter |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1905 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Thomas | Daughter | — | 11 | ~1929 |
| T Thomas | Daughter | — | 9 | ~1931 |
| John Thomas | Head | — | 35 | ~1905 |
| Teresa Thomas | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Baltimore, Maryland
Son, age 15
Baltimore, Maryland · implied b. ~1905 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 24
Baltimore, Maryland · implied b. ~1906 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 22 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Operator |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 20 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 35
Baltimore-City-County, Maryland · implied b. ~1905 — 4 household members
| Surname | Thomas |
| Given Name | John H. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| Occupation | Carpenter |
| Industry | For Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 350 |
| Highest Grade | Hs 4 |
| 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 John Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Chas Thomas (~0.92 confidence) and mother Angeline Thomas (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Chas Thomas
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Angeline Thomas
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Thomas
Head · 1940 · age 35 · b. ~1905 · 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-t0627-01527-00671)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert S. Frazier | 3 | son | — | Maryland |
| 2 | Joseph Rubenstein | 40 | head | Merchant | Russia |
| 3 | Bertha Rubenstein | 32 | wife | — | Maryland |
| 4 | Daniel J. Bedsole | 46 | head | Commission Merchant | N. Carolina |
| 5 | Minnie Bedsole | 41 | wife | Manager | N. Carolina |
| 6 | Charles R. Bedsole | 18 | son | Shipping Clerk | N. Carolina |
| 7 | Doris Bedsole | 11 | daughter | — | N. Carolina |
| 8 | Mary White | 52 | sister | — | N. Carolina |
| 9 | Hazel White | 21 | niece | New Worker | N. Carolina |
| 10 | William J. Smith | 56 | head | Laborer | Maryland |
| 11 | Minnie E. Smith | 47 | wife | Operator | Maryland |
| 12 | John H. Thomas THIS PERSON | 35 | head | Carpenter | Maryland |
| 13 | Teresa Thomas | 32 | wife | — | Maryland |
| 14 | Margaret Thomas | 11 | daughter | — | Maryland |
| 15 | T. Dan Thomas | 9 | daughter | — | Maryland |
| 16 | Cecelia Hunter | 42 | head | Interviewer | Maryland |
| 17 | Vera Hunter | 21 | daughter | — | Maryland |
| 18 | William Hunter | 19 | son | — | Maryland |
| 19 | Walter Shearer | 21 | head | Machinist | Maryland |
| 20 | Miriam Shearer | 22 | wife | — | Maryland |
| 21 | John G. Braunheim | 76 | head | — | Maryland |
| 22 | Katie Braunheim | 72 | wife | — | Maryland |
| 23 | John A. Braunheim | 46 | son | Cutter | Maryland |
| 24 | Mable Braunheim | 40 | daughter-in-law | Box Work | Maryland |
| 25 | Katherine Braunheim | 18 | daughter | Clerical | Maryland |
| 26 | William C. Hodup | 23 | head | Salesman | Maryland |
| 27 | Bertha E. Hodup | 24 | wife | — | Maryland |
| 28 | William C. Iii Hodup | 3 | son | — | Maryland |
| 29 | Eugene Thomas | 30 | lodger | Brakeman | Maryland |
| 30 | Hilda Thomas | 21 | lodger | — | Maryland |
| 31 | Grace Kirwin | 52 | head | Chart Woman | Maryland |
| 32 | Jos. O'Grady | 54 | head | Inspector | Maryland |
| 33 | Emma C. O'Grady | 55 | wife | — | Maryland |
| 34 | Clarence Ryfort | 45 | head | Salesman | Penna |
| 35 | Mildred Ryfort | 23 | wife | — | Maryland |
| 36 | Betty Lou Ryfort | 3 | daughter | — | Maryland |
| 37 | Frank S. Carey | 45 | head | Letter Carrier | Maryland |
| 38 | Mary Carey | 39 | wife | — | Maryland |
| 39 | Jack Carey | 19 | daughter | — | Maryland |
| 40 | Frank Jr. Carey | 17 | son | New Worker | Maryland |
Pedigree Summary
John
Gen 1 · 2 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)