IT
Ida Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Ida Thompson across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Thompson |
| Given Name | Ida |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1928 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ida | Age | Birth yr |
|---|---|---|---|---|
| Lillian Thompson | Daughter | — | 5 | ~1935 |
| Anna Thompson | Daughter | — | 14 | ~1926 |
| Ida Thompson | Daughter | — | 12 | ~1928 |
| Margaret Thompson | Daughter | — | 11 | ~1929 |
| Mary Thompson | Daughter | — | 16 | ~1924 |
| John Thompson | Head | — | 50 | ~1890 |
| Jerry Thompson | Son | — | 21 | ~1919 |
| John Thompson | Son | — | 18 | ~1922 |
| Joseph Thompson | Son | — | 25 | ~1915 |
| Amelia Thompson | Spouse | — | 50 | ~1890 |
Census Appearances
1930
None, Maryland
Daughter, age 2
None, Maryland · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ida |
| Relationship to Head | Daughter |
| Sex | F |
| 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 |
1940
Baltimore-City-County, Maryland
Daughter, age 12
Baltimore-City-County, Maryland · implied b. ~1928 — 10 household members
| Surname | Thompson |
| Given Name | Ida |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore |
| Highest Grade | No 6 |
| 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 Ida Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ida Thompson
Daughter · 1940 · age 12 · b. ~1928 · Maryland
★ You are viewing this record
Sibling
Anna Thompson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Thompson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Thompson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Thompson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Thompson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerry Thompson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Thompson
Sibling · 1940 · age 16
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-t0627-01537-00661)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Calvin Slaving | 17 | Son | — | Maryland |
| 2 | Leana Slaving | 13 | Daughter | — | Maryland |
| 3 | Lona Slaving | 10 | Daughter | — | Maryland |
| 4 | Neal Slaving | 7 | Son | — | Maryland |
| 5 | Juanita Slaving | 4 | Daughter | — | Maryland |
| 6 | George A. Miller | 52 | Head | Finisher | Maryland |
| 7 | Rosa Miller | 45 | Wife | Housework | Germany |
| 8 | Anna Keys | 65 | Head | House Keeper | Maryland |
| 9 | Henry Stovall | 40 | Boarder | Bethlehem Steel Co. | Maryland |
| 10 | John Miller | 37 | Head | Mechanic | Maryland |
| 11 | Katherine Miller | 35 | Wife | Housework | Maryland |
| 12 | Marie Miller | 14 | Daughter | — | Maryland |
| 13 | Bertha Miller | 12 | Daughter | — | Maryland |
| 14 | Norma Miller | 10 | Daughter | — | Maryland |
| 15 | Lester Miller | 6 | Son | — | Maryland |
| 16 | Lois Miller | 5 | Daughter | — | Maryland |
| 17 | Joseph Miller | 3 | Son | — | Maryland |
| 18 | Albert Miller | 2 | Son | — | Maryland |
| 19 | John T. Thompson | 50 | Head | Steel Mill | Maryland |
| 20 | Amelia A. Thompson | 50 | Wife | Housework | Maryland |
| 21 | Joseph Thompson | 25 | Son | Labouring | Maryland |
| 22 | Jerry Thompson | 21 | Son | — | Maryland |
| 23 | John Thompson | 18 | Son | General Work | Maryland |
| 24 | Mary Thompson | 16 | Daughter | Housework | Maryland |
| 25 | Anna Thompson | 14 | Daughter | Housework | Maryland |
| 26 | Ida Thompson THIS PERSON | 12 | Daughter | — | Maryland |
| 27 | Margaret Thompson | 11 | Daughter | — | Maryland |
| 28 | Lillian Thompson | 5 | Daughter | — | Maryland |
| 29 | Silas Yarnell | 32 | Head | Crane Operator | Tennessee |
| 30 | Rose Yarnell | 21 | Wife | — | New York |
| 31 | Silas Jr. Yarnell | 2 | Son | — | Maryland |
| 32 | Edward P. Yarnell | 0 | Son | — | Maryland |
| 33 | Goodwin S. Williams | 54 | Head | Confectionery | Maryland |
| 34 | Daisy F. Williams | 58 | Wife | — | Maryland |
| 35 | George M. Pahless | 79 | Roomer | Old Age Pension | Maryland |
| 36 | Bernardino Noli Pasquale | 49 | Head | Foreman | Italy |
| 37 | Augusta Noli Pasquale | 35 | Wife | — | Italy |
| 38 | Mary Noli Pasquale | 19 | Daughter | — | Maryland |
| 39 | Florence Noli Pasquale | 15 | Daughter | — | Maryland |
| 40 | Bernardino Noli Pasquale | 13 | Son | — | 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)