BT
Betty Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this Betty Thompson across the 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Thompson |
| Given Name | Betty Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Mt Pleasant |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Highest Grade | G-5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Mt Pleasant |
| Est. Birth Year | ~1929 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Earl Thompson | Head | — | 33 | ~1907 |
| Helen Thompson | Spouse | — | 33 | ~1907 |
| Franklin Thompson | Other | — | 74 | ~1866 |
| Peggy Thompson | Daughter | — | 9 | ~1931 |
| Mary Thompson | Daughter | — | 6 | ~1934 |
| Earl Thompson | Son | — | 4 | ~1936 |
| Betty Thompson | Daughter | — | 11 | ~1929 |
| Helen Thompson | Daughter | — | 13 | ~1927 |
| Dorothy Thompson | Daughter | — | 2 | ~1938 |
Census Appearances
1930
Frederick, Maryland
Daughter, age 1
Frederick, Maryland · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Bettie J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| 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 |
1940
Frederick-County, Maryland
Daughter, age 11
Frederick-County, Maryland · implied b. ~1929 — 9 household members
| Surname | Thompson |
| Given Name | Betty Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Mt Pleasant |
| 1935 Residence (County) | Frederick |
| Highest Grade | G-5 |
| 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 Betty Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Thompson
Daughter · 1940 · age 11 · b. ~1929 · Maryland
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Sibling
Peggy Thompson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Thompson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Thompson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Thompson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Thompson
Sibling · 1940 · age 4
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 — Frederick-County, Maryland
Open full size
1940 US Federal Census — Frederick-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01549-00267)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Maine Mary V Main | 25 | Daughter | House Work | Maryland |
| 42 | Mildred Main | 21 | Daughter | Housework | Maryland |
| 43 | Charles L Main | 17 | Son | Laborer | Maryland |
| 44 | Austin J Main | 15 | Son | — | Maryland |
| 45 | Elizabeth Virginia Main | 9 | Daughter | — | Maryland |
| 46 | Gordon R Main | 6 | Son | — | Maryland |
| 47 | Martin L Linton | 31 | S. Son | — | Maryland |
| 48 | Mary Virginia Linton | 25 | Daughter-in-law | — | Maryland |
| 49 | Cecil Mary Linton | 4 | Child | — | Maryland |
| 50 | Clinton M Maine | 30 | Head | Farmer | Maryland |
| 51 | Frances E Maine | 23 | Wife | — | Maryland |
| 52 | Imogene A Maine | 5 | Daughter | — | Maryland |
| 53 | Annie J Maine | 4 | Daughter | — | Maryland |
| 54 | Anthony M Maine | 3 | Son | — | Maryland |
| 55 | James L Maine | 1 | Son | — | Maryland |
| 56 | Woodrow W Miners | 27 | Head | Truck Driver | Maryland |
| 57 | Mary Frances Miners | 23 | Wife | Truck Driver | Maryland |
| 58 | Charles Richard Miners | 0 | Son | — | Maryland |
| 59 | Raymond Zacharias | 62 | Head | — | Maryland |
| 60 | Earl F Thompson | 33 | Head | Farmer | Maryland |
| 61 | Helen E Thompson | 33 | Wife | — | Maryland |
| 62 | Helen A Thompson | 13 | Daughter | — | Maryland |
| 63 | Betty Jane Thompson THIS PERSON | 11 | Daughter | — | Maryland |
| 64 | Peggy Anne Thompson | 9 | Daughter | — | Maryland |
| 65 | Mary Elizabeth Thompson | 6 | Daughter | — | Maryland |
| 66 | Earl Jr Thompson | 4 | Son | — | Maryland |
| 67 | Dorothy Louise Thompson | 2 | Daughter | — | Maryland |
| 68 | Franklin Thompson | 74 | Father | — | Maryland |
| 69 | Harry Mcman | 52 | Head | — | Maryland |
| 70 | William Zimmerman | 39 | Head | Farmer | Maryland |
| 71 | Elizabeth H Zimmerman | 34 | Wife | — | Maryland |
| 72 | Barthie J Zimmerman | 11 | Daughter | — | Maryland |
| 73 | William H Jr Zimmerman | 9 | Son | — | Maryland |
| 74 | Virginia Eclary | 18 | Lodger | House | Maryland |
| 75 | Garnet Noffzinger | 30 | Head | Farmer | West Virginia |
| 76 | Mary E Noffzinger | 30 | Wife | — | Maryland |
| 77 | Pearce Albaugh | 67 | Lodger | — | Maryland |
| 78 | Walter E Hannon | 46 | Head | Farmer | Maryland |
| 79 | Mary Reada Hannon | 39 | Wife | — | Maryland |
| 80 | Marguerite L Hannon | 20 | Daughter | Beauty | Maryland |
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)