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Thelma Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Howard-County, Maryland
Our Model Tree links this Thelma Thompson across the 1920, 1930 and 1940 US Censuses in Howard-County, Maryland (XGBoost, ~Confirmed), with identified parents William & Albert — first a daughter (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Female
Daughter
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Howard-County, Maryland |
| Surname | Thompson |
| Given Name | Thelma R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election Dist #1 |
| 1935 Residence (County) | Howard |
| Additional Details | |
| Occupation | Attendant |
| Industry | Service Station |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 416 |
| Highest Grade | H 2 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Attendant |
| Township / Ward | Election Dist 1 |
| Est. Birth Year | ~1912 |
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 Thelma | Age | Birth yr |
|---|---|---|---|---|
| Thelma Thompson | Daughter | — | 20 | ~1920 |
| Jean Clayton | Daughter | — | 16 | ~1924 |
| Thelma Thompson | Daughter | — | 28 | ~1912 |
| Myra Clayton | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 6
Baltimore, Maryland · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | No |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 17
Baltimore, Maryland · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Thelma E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Assorter |
| Industry | Crown Cork |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Howard-County, Maryland
Daughter, age 28
Howard-County, Maryland · implied b. ~1912 — 4 household members
| Surname | Thompson |
| Given Name | Thelma R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election Dist #1 |
| 1935 Residence (County) | Howard |
| Occupation | Attendant |
| Industry | Service Station |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 416 |
| Highest Grade | H 2 |
| 1935 Residence | Maryland |
| 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 Thelma Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Thompson (~0.92 confidence) and father Albert Thompson (~0.92 confidence) and mother Bertha Thompson (~0.92 confidence) and mother Carrie Thompson (~0.92 confidence) and mother Myra Clayton (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Thompson
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Albert Thompson
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Bertha Thompson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Carrie Thompson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Myra Clayton
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thelma Thompson
Daughter · 1940 · age 28 · b. ~1912 · Maryland
★ You are viewing this record
Sibling
Jean Clayton
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Thompson
Sibling · 1940 · age 20
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 — Howard-County, Maryland
Open full size
1940 US Federal Census — Howard-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01552-00073)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Evelyn J. K. Mclean | 27 | Lodger | — | Canada |
| 42 | — | 5 | Lodger | — | Maryland |
| 43 | Fredrick C. Vermillion | 36 | Head | Proprietor | Maryland |
| 44 | Virginia M. Vermillion | 37 | Wife | — | Ohio |
| 45 | Barbara Lee Vermillion | 12 | Daughter | — | Maryland |
| 46 | Edward W. Robinson | 57 | Uncle | Clerk | Maryland |
| 47 | Grace P. Robinson | 71 | Aunt | — | Maryland |
| 48 | Logan R. Tignor | 40 | Head | Accountant | Maryland |
| 49 | Anita Tignor | 42 | Wife | — | Maryland |
| 50 | Logan R. Jr. Tignor | 13 | Son | — | Maryland |
| 51 | Clayton | 48 | Head | Mechanic | Maryland |
| 52 | Myra C. Clayton | 43 | Wife | — | Maryland |
| 53 | Jean L. Clayton | 16 | Daughter | — | Maryland |
| 54 | Thelma R. Thompson THIS PERSON | 28 | Daughter | Attendant | Maryland |
| 55 | Thelma R. Thompson | 20 | Daughter | — | Maryland |
| 56 | Cyril Mcnetsch | 35 | Head | Proprietor | Maryland |
| 57 | Elizabeth I. Mcnetsch | 32 | Wife | — | Maryland |
| 58 | Elizabeth L. Mcnetsch | 5 | Daughter | — | Maryland |
| 59 | Charles S. Mcnetsch | 1 | Son | — | Maryland |
| 60 | Catherine Zuckman | 69 | Mother-in-law | — | Maryland |
| 61 | Albert D. Mcconnell | 54 | Head | Clerk-In-Charge | Maryland |
| 62 | Christiana Mcconnell | 53 | Wife | Assistant Clerk | Maryland |
| 63 | Celeste Mcconnell | 15 | Daughter | — | Maryland |
| 64 | Harold R. Mcmullen | 38 | Head | Police Guard | Indiana |
| 65 | Alberta D. Mcmullen | 34 | Wife | — | Michigan |
| 66 | Charlotte L. Mcmullen | 2 | Daughter | — | Indiana |
| 67 | Mcmullen | 6 | Daughter | — | Pennsylvania |
| 68 | Muriel Stivers | 28 | Head | Proprietor | Maryland |
| 69 | Olive Stivers | 27 | Wife | — | Maryland |
| 70 | Wayne D. Sutphin | 59 | Head | Leather Cutter | Maryland |
| 71 | Bertha A. Sutphin | 55 | Wife | — | Maryland |
| 72 | Lee R. Sutphin | 24 | Son | Helper | Maryland |
| 73 | Helen M. Sutphin | 19 | Daughter | — | Maryland |
| 74 | Nicholas J. Backhaus | 51 | Father-in-law | 2Nd Hand Clerk | Maryland |
| 75 | Ruth M. Backhaus | 15 | Daughter | — | Maryland |
| 76 | Nicholas M. Backhaus | 4 | Son | — | Maryland |
| 77 | Samuel Z. Earp | 71 | Head | — | Maryland |
| 78 | Annie O. Earp | 68 | Wife | — | Pennsylvania |
| 79 | S. Lester Earp | 28 | Son | Undertaker | Maryland |
| 80 | Ethel C. Earp | 30 | Daughter | — | Maryland |
Pedigree Summary
Thelma + 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)