PT
Pearl Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Pearl Thompson across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Thompson |
| Given Name | Pearl |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1925 |
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 Pearl | Age | Birth yr |
|---|---|---|---|---|
| Daniel Thompson | Son | — | 3 | ~1937 |
| Sidonia Thompson | Daughter | — | 5 | ~1935 |
| Walter Thompson | Son | — | 4 | ~1936 |
| Donald Thompson | Son | — | 5 | ~1935 |
| Loretta Thompson | Daughter | — | 8 | ~1932 |
| Helen Thompson | Daughter | — | 13 | ~1927 |
| Henry Thompson | Son | — | 11 | ~1929 |
| Pearl Thompson | Daughter | — | 15 | ~1925 |
| William Thompson | Head | — | 43 | ~1897 |
| Isabelle Thompson | Spouse | — | 30 | ~1910 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 4
Baltimore, Maryland · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Pauline |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 15
Baltimore-City-County, Maryland · implied b. ~1925 — 10 household members
| Surname | Thompson |
| Given Name | Pearl |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Industry | 0 |
| Highest Grade | No 4 |
| 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 Pearl Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Pearl Thompson
Daughter · 1940 · age 15 · b. ~1925 · Maryland
★ You are viewing this record
Sibling
Sidonia Thompson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Thompson
Sibling · 1940 · age 3
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
Donald Thompson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Thompson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Thompson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Thompson
Sibling · 1940 · age 8
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-t0627-01510-00565)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anne Nigard | 64 | Head | — | Maryland |
| 42 | Lambert Conneley | 27 | Head | Laborer | West Virginia |
| 43 | Marie Conneley | 21 | Wife | — | North Carolina |
| 44 | John Winston | 23 | Head | Laborer | North Carolina |
| 45 | Leanna Winston | 22 | Wife | — | North Carolina |
| 46 | Edgar Addison | 37 | Head | Laborer | D. of C. |
| 47 | Nellie Addison | 40 | Wife | — | South Carolina |
| 48 | Edgar Addison | 3 | Son | — | Maryland |
| 49 | Pasquale Zoppo | 52 | Head | Cement Finisher | Italy |
| 50 | Millie Zoppo | 24 | Daughter | Seamstress | Maryland |
| 51 | Vince Zoppo | 22 | Son | Vender | Maryland |
| 52 | Peter Zoppo | 22 | Son | Vender | Maryland |
| 53 | Joseph Zoppo | 20 | Son | New Worker | Maryland |
| 54 | Philip Zoppo | 17 | Son | New Worker | Maryland |
| 55 | Charles Zoppo | 15 | Son | — | Maryland |
| 56 | Mary Zoppo | 14 | Daughter | — | Maryland |
| 57 | Raffael Zoppo | 12 | Son | — | Maryland |
| 58 | Dolores Zoppo | 5 | Daughter | — | Maryland |
| 59 | Anna Fermiera | 55 | Head | — | Italy |
| 60 | Josephine Fermiera | 18 | Daughter | New Worker | Maryland |
| 61 | Frances Donatella | 24 | Daughter | — | Maryland |
| 62 | Walter Roberts | 31 | Son-in-law | Carpenter | Virginia |
| 63 | Rosaria Roberts | 27 | Daughter | — | Maryland |
| 64 | Michael Roberts | 1 | Son | — | Maryland |
| 65 | William Thompson | 43 | Head | — | Maryland |
| 66 | Isabelle Thompson | 30 | Wife | — | Maryland |
| 67 | Pearl Thompson THIS PERSON | 15 | Daughter | — | Maryland |
| 68 | Helen Thompson | 13 | Daughter | — | Maryland |
| 69 | Henry Thompson | 11 | Son | — | Maryland |
| 70 | Loretta Thompson | 8 | Daughter | — | Maryland |
| 71 | Sidonia Thompson | 5 | Daughter | — | Maryland |
| 72 | Donald Thompson | 5 | Son | — | Maryland |
| 73 | Walter Thompson | 4 | Son | — | Maryland |
| 74 | Daniel Thompson | 3 | Son | — | Maryland |
| 75 | Daisie Smith | 44 | Head | Maid | Virginia |
| 76 | John Anderleck | 40 | Head | Laborer | North Carolina |
| 77 | Hattie Anderleck | 45 | Wife | Maid | Virginia |
| 78 | Lizzie Waters | 74 | Head | — | Maryland |
| 79 | Vernon Thornton | 41 | Head | Booth-Black | New York |
| 80 | Agnes Belgood | 31 | Partner | — | Virginia |
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)