HT
Helen Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this Helen Thompson across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents James & Helen — first a daughter (b.~1894), then head of a 3-person household.
Age 46
b. ~1894
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Thompson |
| Given Name | Helen C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Towson |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | School teacher |
| Industry | Public school |
| Class of Worker | GW |
| Hours Worked | 38 |
| Income (1939) | 134 |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Teacher |
| Township / Ward | Towson |
| Est. Birth Year | ~1894 |
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 Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Thompson | Daughter | — | 46 | ~1894 |
| James Thompson | Head | — | 74 | ~1866 |
| Helen Thompson | Spouse | — | 73 | ~1867 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 27
Baltimore, Maryland · implied b. ~1893 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Helen C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 37
Baltimore, Maryland · implied b. ~1893 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Helen A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Daughter, age 46
Baltimore-County, Maryland · implied b. ~1894 — 3 household members
| Surname | Thompson |
| Given Name | Helen C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Towson |
| 1935 Residence (County) | Baltimore |
| Occupation | School teacher |
| Industry | Public school |
| Class of Worker | GW |
| Hours Worked | 38 |
| Income (1939) | 134 |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| 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 Helen Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Thompson (~0.92 confidence) and mother Helen Thompson (~0.92 confidence) and mother Helen Thompson (~0.92 confidence) and father James Thompson (~0.92 confidence) and mother Helen Thompson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Thompson
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Helen Thompson
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Helen Thompson
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
James Thompson
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Helen Thompson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Thompson
Daughter · 1940 · age 46 · b. ~1894 · 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-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01505-00240)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ruby Bayne | 51 | Wife | — | Maryland |
| 42 | Clarence E Bayne | 21 | Son | Laborer | Maryland |
| 43 | Charles M Bayne | 19 | Son | Mechanic | Maryland |
| 44 | Charlotte M Bayne | 17 | Daughter | — | Maryland |
| 45 | James D Thompson | 74 | Head | — | Maryland |
| 46 | Helen Thompson | 73 | Wife | — | Maryland |
| 47 | Helen C Thompson THIS PERSON | 46 | Daughter | School Teacher | Maryland |
| 48 | Mary Andrews | 55 | Head | — | Maryland |
| 49 | William Andrews | 32 | Son | Shipwright | Maryland |
| 50 | Joseph Mcdonald | 73 | Lodger | Gardener | Maryland |
| 51 | John Adams | 62 | Head | Bottle Washer | Maryland |
| 52 | George Adams | 59 | Head | Machinist | Maryland |
| 53 | Genevieve Adams | 56 | Wife | — | Maryland |
| 54 | Hans P Arrington | 55 | Head | Fireman | Virginia |
| 55 | Maggie Arrington | 52 | Wife | — | Maryland |
| 56 | Daniel Arrington | 25 | Son | Gardener | Maryland |
| 57 | Howard Arrington | 20 | Son | — | Maryland |
| 58 | G. Howard Flayhart | 60 | Head | Special Investigator | Maryland |
| 59 | Elva Flayhart | 44 | Wife | — | Maryland |
| 60 | Wilmer Mahler | 42 | Head | Landscape Gardener | Maryland |
| 61 | Anna Mahler | 42 | Wife | — | Maryland |
| 62 | Dorothy Mahler | 15 | Daughter | — | Maryland |
| 63 | James Mahler | 12 | Son | — | Maryland |
| 64 | Isabella Allen | 53 | Head | — | New York |
| 65 | John Allen | 43 | Son | Shipping Clerk | New York |
| 66 | Harry E. Morris | 52 | Head | Watchman | Maryland |
| 67 | Bessie Morris | 54 | Wife | — | Maryland |
| 68 | Albert Jones | 34 | Head | Butcher | Maryland |
| 69 | Lillian Jones | 34 | Wife | Glass Cutter | Maryland |
| 70 | Betty C Jones | 12 | Daughter | — | Maryland |
| 71 | Lillian Jones | 10 | Daughter | — | Maryland |
| 72 | William Morbitt | 48 | Head | Machinist | Maryland |
| 73 | Jeanette Morbitt | 40 | Wife | — | Maryland |
| 74 | William H. Morbitt | 20 | Son | Paint Sprayer | Maryland |
| 75 | Warren Morbitt | 14 | Son | Tool Handler | Maryland |
| 76 | Donald Morbitt | 12 | Son | — | Maryland |
| 77 | George Kent | 45 | Head | Proprietor | Greece |
| 78 | Penelope Kent | 33 | Wife | — | Greece |
| 79 | Helen Kent | 12 | Daughter | — | Maryland |
| 80 | Thomas Kent | 5 | Son | — | Maryland |
Pedigree Summary
Helen
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)