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Lewis Thomas — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Lewis Thomas across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a son (b.~1907), then head of a 10-person household.
Age 23
b. ~1907
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Thomas |
| Given Name | Lewis Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Virginia |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1907 |
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 1930 census.
| Name | Relation to head | Relative to Lewis | Age | Birth yr |
|---|---|---|---|---|
| Lois Hayden | Other | — | 30 | ~1900 |
| Lewis Thomas | Head | — | 55 | ~1875 |
| Mary Thomas | Daughter | — | 15 | ~1915 |
| Rosa Hopkins | Other | — | 45 | ~1885 |
| Lewis Thomas | Son | — | 23 | ~1907 |
| Rudolph Thomas | Son | — | 21 | ~1909 |
| Irene Thomas | Spouse | — | 45 | ~1885 |
| William Hayden | Other | — | 35 | ~1895 |
| Lewis Thomas | Son | — | 19 | ~1911 |
| Ralph Thomas | Son | — | 17 | ~1913 |
Census Appearances
1930
Baltimore, Maryland
Son, age 23
Baltimore, Maryland · implied b. ~1907 — 10 household members
| Surname | Thomas |
| Given Name | Lewis Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 33
Baltimore-City-County, Maryland · implied b. ~1907 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Lowe |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore city |
| 1935 Residence (County) | Baltimore City |
| Occupation | Pattern-Maker |
| Industry | Copper & Brass Rolling |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 2000 |
| Highest Grade | H-3 |
| 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 Lewis Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lewis Thomas
Son · 1930 · age 23 · b. ~1907 · Maryland
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Sibling
Lewis Thomas
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rudolph Thomas
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Thomas
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Thomas
Sibling · 1930 · age 15
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
1930 US Federal Census — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus861unit:0004)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Grover Hayes | 37 | Head | Porter | North Carolina |
| 2 | Eugene J. Watkins | 51 | Head | Laborer | Virginia |
| 3 | Mary Watkins | 45 | Wife | Maid | Virginia |
| 4 | Willie Cromer | 28 | Head | Packer | South Carolina |
| 5 | Louise Cromer | 23 | Wife | Maid | South Carolina |
| 6 | Edward Blake | 51 | Head | Fireman | Maryland |
| 7 | Elizabeth L. Blake | 48 | Wife | — | Virginia |
| 8 | Leta Blake | 21 | Daughter | — | Maryland |
| 9 | Jessie Ireland | 48 | Head | Cook | Maryland |
| 10 | Maggie Ireland | 25 | Daughter | — | Maryland |
| 11 | Elizabeth M. Ireland | 23 | Daughter | Messenger | Maryland |
| 12 | Charles Ireland | 22 | Son | Laborer | Maryland |
| 13 | Mary E. Ireland | 19 | Daughter | — | Maryland |
| 14 | Jessie J. Ireland | 17 | Daughter | Maid | Maryland |
| 15 | Robert Twings | 51 | Head | Principal | Maryland |
| 16 | Nellie J. Twings | 48 | Wife | — | Maryland |
| 17 | Robert J. Twings | 21 | Son | — | Maryland |
| 18 | Milton Twings | 19 | Son | — | Maryland |
| 19 | Margaret Twings | 17 | Daughter | — | Maryland |
| 20 | Lewis H. Thomas | 55 | Head | Musician | Maryland |
| 21 | Irene Thomas | 45 | Wife | — | Virginia |
| 22 | Lewis Jr. Thomas THIS PERSON | 23 | Son | — | Maryland |
| 23 | Rudolph Thomas | 21 | Son | — | Maryland |
| 24 | Lewis G. Thomas | 19 | Son | — | Maryland |
| 25 | Ralph Thomas | 17 | Son | Stevedore | Maryland |
| 26 | Mary E. Thomas | 15 | Daughter | — | Maryland |
| 27 | Rosa Hopkins | 45 | Lodger | — | Maryland |
| 28 | William Hayden | 35 | Lodger | — | Maryland |
| 29 | Lois Hayden | 30 | Lodger | — | Maryland |
| 30 | Robert L. Frazier | 60 | Head | Packer | Virginia |
| 31 | Ida Frazier | 46 | Wife | — | Maryland |
| 32 | Robert L. Frazier | 6 | Son | — | Maryland |
| 33 | Robert Whitehead | 48 | Head | Butler | Georgia |
| 34 | Rosa M. Whitehead | 41 | Wife | Nurse | Virginia |
| 35 | James Thomas | 44 | Head | Butler | Maryland |
| 36 | Corah Thomas | 40 | Wife | Cook | New York |
| 37 | Samuel Fitzgerald | 41 | Head | Laborer | Virginia |
| 38 | Marie Fitzgerald | 35 | Wife | Maid | Virginia |
| 39 | Marie J. Fitzgerald | 26 | Daughter | Maid | Virginia |
| 40 | Ruby Fitzgerald | 18 | Daughter | Maid | Virginia |
| 41 | Burel Fitzgerald | 28 | Son | Laborer | Virginia |
| 42 | Ruth Annie Thomas | 8 | Lodger | — | Virginia |
| 43 | James Thomas | 20 | Lodger | — | Virginia |
| 44 | William B. Thomas | 4 | Lodger | — | Virginia |
| 45 | Joseph Thomas | 3 | Lodger | — | Virginia |
| 46 | William D. Lane | 44 | Head | Chauffeur | Maryland |
| 47 | Hattie E. Lane | 42 | Wife | — | Virginia |
| 48 | William H. Lane | 11 | Son | — | Maryland |
| 49 | Claude Knight | 30 | Head | Fireman | Virginia |
| 50 | May L. Knight | 25 | Wife | Cook | North Carolina |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)