CT
Clara Thomas — 1930 US Census Record
Model Tree available1930 United States Federal Census · Frederick, Maryland
Our Model Tree links this Clara Thomas across the 1910, 1920 and 1930 US Censuses in Frederick, Maryland (XGBoost, ~Confirmed), with identified parents Elizabeth & Mary — first a daughter (b.~1867), then head of a 2-person household.
Age 63
b. ~1867
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Frederick, Maryland |
| Surname | Thomas |
| Given Name | Clara A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Frederick City |
| Est. Birth Year | ~1867 |
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.
2 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Clara | Age | Birth yr |
|---|---|---|---|---|
| Clara Thomas | Daughter | — | 63 | ~1867 |
| Mary Thomas | Head | — | 82 | ~1848 |
Census Appearances
Daughter, age 40
Frederick, Maryland · implied b. ~1870 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Cora B |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Frederick, Maryland
Daughter, age 50
Frederick, Maryland · implied b. ~1870 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Clara A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| 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
Frederick, Maryland
Daughter, age 63
Frederick, Maryland · implied b. ~1867 — 2 household members
| Surname | Thomas |
| Given Name | Clara A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| 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 |
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 Clara Thomas across 3 US Census years (1910, 1920 and 1930) in Frederick, Maryland, using XGBoost record linkage. Identified parents: mother Elizabeth Thomas (~0.92 confidence) and mother Mary Thomas (~0.92 confidence) and mother Mary Thomas (~0.60 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.81
Mother
Elizabeth Thomas
b. ~1836
Source mother
● Household
· direct · ~0.92
Mother
Mary Thomas
b. ~1848
Source mother
● Household
· direct · ~0.92
Mother
Mary Thomas
b. ~1866
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Clara Thomas
Daughter · 1930 · age 63 · b. ~1867 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Frederick, Maryland
Open full size
1930 US Federal Census — Frederick, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus874unit:0105)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Andrew J Mershing | 41 | Brother-in-law | Mason | Pennsylvania |
| 2 | Oscar F Mershing | 40 | Head | Retail Merchant | Maryland |
| 3 | Kathryn G Mershing | 38 | Wife-H | — | Maryland |
| 4 | Eileen J Mershing | 17 | Daughter | — | Maryland |
| 5 | Mary E Mershing | 15 | Daughter | — | Maryland |
| 6 | Lola F Mershing | 11 | Daughter | — | Maryland |
| 7 | Catherine R Mershing | 7 | Daughter | — | Maryland |
| 8 | Charles W Mershing | 5 | Son | — | Maryland |
| 9 | Jeanne G Mershing | 2 | Daughter | — | Maryland |
| 10 | Leon S Mershing | 2 | Son | — | Maryland |
| 11 | Catherine L Conrad | 75 | Mother-in-law | — | Maryland |
| 12 | John F Byrne | 44 | Head | Physician | Rhode Island |
| 13 | Esther M Byrne | 42 | Wife-H | — | Maryland |
| 14 | John F Jr Byrne | 16 | Son | — | Maryland |
| 15 | James W Appleby | 56 | Head | Retail Merchant | Maryland |
| 16 | Grace B Appleby | 57 | Wife-H | — | Maryland |
| 17 | Frances R Metcalfe | 31 | Daughter | — | Maryland |
| 18 | Mary F Metcalfe | 10 | Granddaughter | — | Maryland |
| 19 | John M Miller | 72 | Head | Vice President | Maryland |
| 20 | Fannie H Miller | 67 | Wife-H | — | District of Columbia |
| 21 | Edith M Miller | 37 | Daughter | Teacher | Maryland |
| 22 | Virginia H Miller | 27 | Daughter | — | Maryland |
| 23 | George S Summers | 61 | Head | — | Maryland |
| 24 | Lillie B Summers | 59 | Wife-H | — | Maryland |
| 25 | Maynard G Summers | 21 | Son | Salesman | Maryland |
| 26 | Bryant Morgan | 36 | Boarder | Laborer | Maryland |
| 27 | Harry R Flautt | 51 | Head | Retail Merchant | Maryland |
| 28 | Ella G Flautt | 51 | Wife-H | — | Maryland |
| 29 | Mildred S Branch | 36 | Sister-in-law | — | Maryland |
| 30 | Charles E Hull | 35 | Head | Machinist | Maryland |
| 31 | Minnie M Hull | 34 | Wife-H | — | Maryland |
| 32 | Margaret D Hull | 14 | Daughter | — | Maryland |
| 33 | John L Hull | 13 | Son | — | Maryland |
| 34 | Elmer L Hull | 10 | Son | — | Maryland |
| 35 | Kathryn E Hull | 5 | Daughter | — | Maryland |
| 36 | Fannie G Lease | 66 | Head | — | Maryland |
| 37 | Mary B Lease | 37 | Daughter | Saleslady | Maryland |
| 38 | Katharine E Lease | 27 | Daughter | Stenographer | Maryland |
| 39 | Mary L Thomas | 82 | Head | — | Maryland |
| 40 | Clara A Thomas THIS PERSON | 63 | Daughter | — | Maryland |
| 41 | Roy E Nidurk | 50 | Head | Truck Driver | Maryland |
| 42 | Beulah M Nidurk | 47 | Wife-H | — | West Virginia |
| 43 | Bernard D Nidurk | 20 | Son | — | Maryland |
| 44 | Ralph E Cecil | 27 | Son-in-law | Plumber | Maryland |
| 45 | Mable B Cecil | 23 | Daughter | — | Maryland |
| 46 | Betty L Cecil | 1 | Granddaughter | — | Maryland |
| 47 | Ernest J Mcgeha | 50 | Head | Manager | Maryland |
| 48 | Ester M Mcgeha | 50 | Wife-H | — | Maryland |
| 49 | David Groff | 74 | Head | — | Maryland |
| 50 | Nannie Groff | 62 | Sister-H | — | Maryland |
Related Census Records
Pedigree Summary
Clara
Gen 1 · 3 parents
~0.81
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)