JW
Julia Williams — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Julia Williams across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 10-person household.
Age 10
b. ~1920
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Williams |
| Given Name | Julia M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1920 |
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 Julia | Age | Birth yr |
|---|---|---|---|---|
| Julia Williams | Daughter | — | 10 | ~1920 |
| Annie Williams | Daughter | — | 8 | ~1922 |
| Thelma Williams | Daughter | — | 1 | ~1929 |
| Raymond Williams | Head | — | 32 | ~1898 |
| James Williams | Son | — | 5 | ~1925 |
| Edgar Williams | Son | — | 7 | ~1923 |
| Raymond Williams | Son | — | 13 | ~1917 |
| Ernest Williams | Son | — | 2 | ~1928 |
| Jack Williams | Son | — | 3 | ~1927 |
| Mamie Williams | Spouse | — | 31 | ~1899 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 10
Baltimore, Maryland · implied b. ~1920 — 10 household members
| Surname | Williams |
| Given Name | Julia M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | South Carolina |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 20
Baltimore-City-County, Maryland · implied b. ~1920 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Juan |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | No 8 |
| 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 Julia Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Julia Williams
Daughter · 1930 · age 10 · b. ~1920 · Maryland
★ You are viewing this record
Sibling
Jack Williams
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ernest Williams
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edgar Williams
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annie Williams
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Williams
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Williams
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Williams
Sibling · 1930 · age 13
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:0034)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isaac Smart | 48 | Head | Nurse | South Carolina |
| 2 | Pauline Smart | 25 | Daughter | Maid | South Carolina |
| 3 | Frank B. Brown | 42 | Head | Janitor | Maryland |
| 4 | Lelia Brown | 38 | Wife | Maid | Virginia |
| 5 | Florence Williams | 38 | Head | Cook | Maryland |
| 6 | Lillian P. Williams | 19 | Daughter | — | Maryland |
| 7 | Annie M. Williams | 15 | Daughter | — | Maryland |
| 8 | Luzon Williams | 2 | Son | — | Maryland |
| 9 | William F. Jackson | 44 | Head | Longshoreman | Virginia |
| 10 | Helen F. Jackson | 38 | Wife | Waitress | Virginia |
| 11 | Emma Batty | 33 | Head | Seamstress | Maryland |
| 12 | Francis Batty | 11 | Daughter | — | Maryland |
| 13 | Emma Batty | 10 | Daughter | — | Maryland |
| 14 | Lawrence Batty | 5 | Son | — | Maryland |
| 15 | Louis Batty | 1 | Son | — | Maryland |
| 16 | Doris Batty | 1 | Daughter | — | Maryland |
| 17 | John Murray | 33 | Head | Chauffeur | North Carolina |
| 18 | Irene V. Murray | 34 | Wife | Maid | North Carolina |
| 19 | Norman Mitchell | 41 | Head | Wire Man | North Carolina |
| 20 | Ella Mitchell | 37 | Wife | — | North Carolina |
| 21 | Cleveland R. Mitchell | 19 | Son | Wire Man | North Carolina |
| 22 | James Mitchell | 17 | Son | Wire Man | North Carolina |
| 23 | Melvin Mitchell | 15 | Son | — | North Carolina |
| 24 | George Mitchell | 14 | Son | — | North Carolina |
| 25 | William Mitchell | 13 | Son | — | North Carolina |
| 26 | Nancie Mitchell | 11 | Daughter | — | North Carolina |
| 27 | Bertha Curley | 38 | Head | Sewerage | North Carolina |
| 28 | Edith Curley | 16 | Daughter | — | Virginia |
| 29 | James Curley | 40 | Son | Wire Man | North Carolina |
| 30 | Roomer Curley | 38 | Roomer | Teacher | North Carolina |
| 31 | Roomer Curley | 18 | Roomer | Wire Man | North Carolina |
| 32 | Roomer Curley | 34 | Roomer | Wire Man | North Carolina |
| 33 | Roomer Curley | 31 | Roomer | Maid | North Carolina |
| 34 | Roomer Curley | 33 | Roomer | Pick & Shovel | North Carolina |
| 35 | Aaron Burksell | 27 | Roomer | Pick & Shovel | North Carolina |
| 36 | Raymond Williams | 32 | Head | Janitor | Maryland |
| 37 | Mamie Williams | 31 | Wife | — | South Carolina |
| 38 | Raymond Williams | 13 | Son | — | Maryland |
| 39 | Julia M. Williams THIS PERSON | 10 | Daughter | — | Maryland |
| 40 | Annie Williams | 8 | Daughter | — | Maryland |
| 41 | Edgar Williams | 7 | Son | — | Maryland |
| 42 | James Williams | 5 | Son | — | Maryland |
| 43 | Jack Williams | 3 | Son | — | Maryland |
| 44 | Ernest Williams | 2 | Son | — | Maryland |
| 45 | Thelma Williams | 1 | Daughter | — | Maryland |
| 46 | Elsie Valentine | 24 | Head | Maid | Maryland |
| 47 | Frank Valentine | 7 | Son | — | Maryland |
| 48 | Harry Valentine | 5 | Son | — | Maryland |
| 49 | Catherine Valentine | 5 | Daughter | — | Maryland |
| 50 | Arline Valentine | 2 | Daughter | — | Maryland |
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)