CT
Catherine Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Catherine Thomas across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Thomas |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Office Clerk |
| Industry | Chem. mfg. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 700 |
| Highest Grade | H 3 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Office Clerk |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1921 |
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 Catherine | Age | Birth yr |
|---|---|---|---|---|
| Mary Thomas | Daughter | — | 21 | ~1919 |
| Catherine Thomas | Daughter | — | 19 | ~1921 |
| George Thomas | Son | — | 10 | ~1930 |
| Elizabeth Thomas | Daughter | — | 14 | ~1926 |
| Katherine Thomas | Spouse | — | 45 | ~1895 |
| Margaret Thomas | Daughter | — | 4 | ~1936 |
| George Thomas | Head | — | 47 | ~1893 |
| Anna Thomas | Daughter | — | 30 | ~1910 |
| Rose Thomas | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Baltimore, Maryland
Other, age 10
Baltimore, Maryland · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Catherine |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 19
Baltimore-City-County, Maryland · implied b. ~1921 — 9 household members
| Surname | Thomas |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Office Clerk |
| Industry | Chem. mfg. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 700 |
| Highest Grade | H 3 |
| 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 Catherine Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Catherine Thomas
Daughter · 1940 · age 19 · b. ~1921 · Maryland
★ You are viewing this record
Sibling
Anna Thomas
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Thomas
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Thomas
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Thomas
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Thomas
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Thomas
Sibling · 1940 · age 21
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-t0627-01538-00465)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cornelius Scherpenisse | 46 | Head | Wrecker | Holland |
| 42 | Marie Scherpenisse | 29 | Wife | — | Maryland |
| 43 | Cornelius Scherpenisse | 10 | Son | — | Maryland |
| 44 | John Scherpenisse | 7 | Son | — | Maryland |
| 45 | Jane Phillips | 32 | Roomer | Waitress | Maryland |
| 46 | George J. Thomas | 47 | Head | Laborer | Maryland |
| 47 | Katherine Thomas | 45 | Wife | — | Maryland |
| 48 | Mary Thomas | 21 | Daughter | Packer | Maryland |
| 49 | Anna Thomas | 30 | Daughter | Wrapper | Maryland |
| 50 | Catherine Thomas THIS PERSON | 19 | Daughter | Office Clerk | Maryland |
| 51 | Rose Thomas | 16 | Daughter | — | Maryland |
| 52 | Elizabeth Thomas | 14 | Daughter | — | Maryland |
| 53 | George Jr. Thomas | 10 | Son | — | Maryland |
| 54 | Margaret Thomas | 4 | Daughter | — | Maryland |
| 55 | Joachim Larsen | 54 | Head | Steam Engineer | Norway |
| 56 | Katherine Larsen | 54 | Wife | — | Maryland |
| 57 | Henry Larsen | 26 | Son | Annealer | Maryland |
| 58 | Norman Larsen | 22 | Son | Annealer | Maryland |
| 59 | Mary Kafer | 51 | Head | — | Maryland |
| 60 | Wilhelmina Kafer | 35 | Daughter | Steel Worker | Maryland |
| 61 | Ruth Kafer | 31 | Daughter | — | Maryland |
| 62 | Carry Kafer | 10 | Grandson | — | Maryland |
| 63 | Laura Hufnagle | 81 | Mother | — | Maryland |
| 64 | Andrew Betz | 49 | Brother | Bartender | Maryland |
| 65 | Patrick Ryan | 57 | Head | Sanitation Dept | Maryland |
| 66 | Barbara Ryan | 54 | Wife | — | Maryland |
| 67 | Howard Voice | 45 | Roomer | Brakeman | Maryland |
| 68 | Charles Powell | 52 | Head | Steamman | Maryland |
| 69 | Katherine Powell | 48 | Wife | — | Maryland |
| 70 | Leslie Powell | 23 | Son | Machinist | Maryland |
| 71 | Theo Powell | 20 | Daughter | — | Maryland |
| 72 | Herbert Powell | 17 | Son | — | Maryland |
| 73 | Carl Powell | 15 | Son | — | Maryland |
| 74 | Ruth Powell | 8 | Daughter | — | Maryland |
| 75 | Joan Powell | 4 | Daughter | — | Maryland |
| 76 | John Mckessen | 59 | Head | Asst. Supt. | Maryland |
| 77 | Margaret Mckessen | 54 | Wife | — | Maryland |
| 78 | John Keys | 44 | Head | Insulator | Maryland |
| 79 | Viola Keys | 42 | Wife | — | Maryland |
| 80 | Charles Keys | 18 | 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)