MT
Mary Thomas — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Thomas across the 1910, 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents William & Thomas — first a daughter (b.~1906), then head of a 7-person household.
Age 24
b. ~1906
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election Dist 15 |
| Est. Birth Year | ~1906 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Thomas | Daughter | — | 24 | ~1906 |
| Annie Thomas | Daughter | — | 8 | ~1922 |
| Joseph Thomas | Head | — | 48 | ~1882 |
| Joseph Thomas | Son | — | 6 | ~1924 |
| Samuel Thomas | Son | — | 11 | ~1919 |
| David Thomas | Son | — | 16 | ~1914 |
| Arletta Thomas | Spouse | — | 45 | ~1885 |
Census Appearances
1910
Baltimore, Maryland
Daughter, age 4
Baltimore, Maryland · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Baltimore, Maryland
Daughter, age 13
Baltimore, Maryland · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 24
Baltimore, Maryland · implied b. ~1906 — 7 household members
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| 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 Mary Thomas across 3 US Census years (1910, 1920 and 1930) in Baltimore, Maryland, using XGBoost record linkage. Identified parents: father William Thomas (~0.92 confidence) and father Thomas Thomas (~0.92 confidence) and father Joseph Thomas (~0.92 confidence) and mother Arletta Thomas (~0.92 confidence) and mother Annie Thomas (~0.60 confidence) and mother Elizabeth Thomas (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.87
Father
William Thomas
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Thomas Thomas
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Joseph Thomas
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Arletta Thomas
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Annie Thomas
b. ~1897
Source mother
● Household
· direct · ~0.6
Mother
Elizabeth Thomas
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Thomas
Daughter · 1930 · age 24 · b. ~1906 · Maryland
★ You are viewing this record
Sibling
David Thomas
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Thomas
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annie Thomas
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Thomas
Sibling · 1930 · age 6
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:1930:15thcensus847unit:0823)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Carrie Prathers | 35 | Wife | None | Virginia |
| 52 | Catherine Prathers | 10 | Daughter | None | Maryland |
| 53 | Nelson Jordan | 24 | Lodger | Puller | Virginia |
| 54 | Howard Mcdonald | 25 | Lodger | Steel Worker | Virginia |
| 55 | Clarence Washington | 30 | Lodger | Steel Worker | Virginia |
| 56 | Ruth Washington | 30 | Lodger | None | Virginia |
| 57 | Joseph Thomas | 48 | Head | Clergyman | Maryland |
| 58 | Arletta Thomas | 45 | Wife | None | Maryland |
| 59 | Mary Thomas THIS PERSON | 24 | Daughter | None | Maryland |
| 60 | David Thomas | 16 | Son | None | Maryland |
| 61 | Samuel Thomas | 11 | Son | None | Maryland |
| 62 | Annie Thomas | 8 | Daughter | None | Maryland |
| 63 | Joseph Thomas | 6 | Son | None | Maryland |
| 64 | George Hickman | 45 | Head | Tin Worker | Maryland |
| 65 | Rosie Hickman | 47 | Wife | Janitor | Maryland |
| 66 | Soltie Cager | 15 | Lodger | None | Maryland |
| 67 | Evelyn Revella | 13 | Lodger | None | Maryland |
| 68 | James Good | 41 | Head | Crane Operator | Virginia |
| 69 | Clara Good | 41 | Wife | None | Virginia |
| 70 | James Jr. Good | 20 | Son | Crane Operator | Virginia |
| 71 | Adolph Waters | 45 | Lodger | Moulder | Virginia |
| 72 | George Edds | 24 | Lodger | Rigger | Virginia |
| 73 | Paul Good | 23 | Lodger | Crane Operator | Virginia |
| 74 | Soft Rogers | 23 | Lodger | Crane Operator | Virginia |
| 75 | Junius Logan | 30 | Lodger | Mechanic | Virginia |
| 76 | Scott Logan | 24 | Lodger | Laborer | Virginia |
| 77 | John Kinsey | 38 | Head | Iron Worker | Virginia |
| 78 | George Kinsey | 39 | Brother | Tin Worker | Virginia |
| 79 | Fannie Kinsey | 32 | Sister-in-law | None | Virginia |
| 80 | Radcliff Kinsey | 11 | Nephew | None | Maryland |
| 81 | Corella Kinsey | 9 | Daughter | None | Maryland |
| 82 | Hugo Kinsey | 7 | Son | None | Maryland |
| 83 | Ralph Kinsey | 5 | Son | None | Maryland |
| 84 | John Jr. Kinsey | 2 | Nephew | None | Maryland |
| 85 | Irene Kinsey | 2 | Niece | None | Maryland |
| 86 | Bote Kinsey | 7 | Brother | None | Virginia |
| 87 | George Burton | 31 | Head | Steel Worker | North Carolina |
| 88 | Ellen Burton | 27 | Wife | None | North Carolina |
| 89 | Clella Burton | 11 | Daughter | None | North Carolina |
| 90 | Samuel Burton | 8 | Son | None | North Carolina |
| 91 | Jesse Waters | 34 | Boarder | Laborer | North Carolina |
| 92 | Katie Waters | 23 | Boarder | None | North Carolina |
| 93 | George R. Waters | 1 | Boarder | None | North Carolina |
| 94 | Max Allen | 25 | Boarder | Steel Worker | North Carolina |
| 95 | Wallace Jones | 28 | Boarder | Steel Worker | North Carolina |
| 96 | Raymond Jones | 25 | Boarder | Laborer | North Carolina |
| 97 | Fred Pullen | 29 | Boarder | Laborer | North Carolina |
| 98 | Henry Mccann | 24 | Boarder | Laborer | North Carolina |
| 99 | Willie Parnett | 39 | Boarder | Steel Worker | North Carolina |
| 100 | Joe William | 20 | Boarder | Laborer | North Carolina |
Pedigree Summary
Mary + 4 siblings
Gen 1 · 6 parents
~0.87
Max depth 4 (1900–1950 window)
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)