IW
Isaac Williams — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Isaac Williams across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 7-person household.
Age 47
b. ~1883
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 26 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Government |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 10 |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | District 11 Part |
| Est. Birth Year | ~1883 |
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 Isaac | Age | Birth yr |
|---|---|---|---|---|
| Grace Williams | Daughter | — | 21 | ~1909 |
| Edith Norton | Daughter | — | 20 | ~1910 |
| Isaac Williams | Head | — | 47 | ~1883 |
| Jessie Williams | Other | — | 41 | ~1889 |
| Evelyn Norton | Other | — | 1 | ~1929 |
| Harry Williams | Son | — | 7 | ~1923 |
| Charles Williams | Son | — | 6 | ~1924 |
Census Appearances
1920
Howard, Maryland
Head, age 37
Howard, Maryland · implied b. ~1883 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Coal Yard |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 47
Baltimore, Maryland · implied b. ~1883 — 7 household members
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 26 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Government |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 10 |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
Head, age 55
Baltimore-County, Maryland · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Ira |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Catonsville (pt) |
| 1935 Residence (County) | Baltimore |
| Occupation | laborer |
| Industry | Building Contractor |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 260 |
| Highest Grade | No 5 |
| 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 Isaac Williams across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Isaac Williams
Head · 1930 · age 47 · b. ~1883 · Maryland
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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:1930:15thcensus846unit:0524)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George M Pleines | 46 | Head | Proprietor | Maryland |
| 52 | Lena G Pleines | 40 | Wife-H | — | Maryland |
| 53 | Matilda M Pleines | 6 | Daughter | — | Maryland |
| 54 | George M Pleines | 5 | Son | — | Maryland |
| 55 | Alma M Pleines | 3 | Daughter | — | Maryland |
| 56 | Dorothy M Pleines | 17 | Daughter | Sales Girl | Maryland |
| 57 | William M Pleines | 15 | Son | — | Maryland |
| 58 | Millard Pleines | 12 | Son | — | Maryland |
| 59 | William H Mason | 55 | Head | Laborer | Maryland |
| 60 | Linda J Mason | 56 | Wife-H | Servant | Maryland |
| 61 | Isaiah M Mason | 23 | Son | — | Maryland |
| 62 | Thadish L Mason | 16 | Son | — | Maryland |
| 63 | Linda J Toode | 23 | Daughter | — | Maryland |
| 64 | William M Toode | 2 | Grandson | — | Maryland |
| 65 | John V Lewis | 26 | Head | Laborer | Maryland |
| 66 | Julia M Lewis | 20 | Wife-H | — | Maryland |
| 67 | Rose E Lewis | 3 | Daughter | — | Maryland |
| 68 | John H Brown | 53 | Head | — | Maryland |
| 69 | Isaac J Brown | 29 | Son | Laborer | Maryland |
| 70 | William H Brown | 27 | Son | Laborer | Maryland |
| 71 | Russell S Brown | 24 | Son | Laborer | Maryland |
| 72 | Raymond A Brown | 21 | Son | Laborer | Maryland |
| 73 | Robert Brown | 20 | Son | Laborer | Maryland |
| 74 | Mabel E Brown | 17 | Daughter | — | Maryland |
| 75 | Anna E Banyon | 32 | Daughter | — | Maryland |
| 76 | Solomon M Banyon | 8 | Grandson | — | New Jersey |
| 77 | Laura A Brown | 60 | Head | — | Maryland |
| 78 | Clara A Brown | 41 | Sister | — | Maryland |
| 79 | John M Johnson | 49 | Head | Laborer | Virginia |
| 80 | Janett H Johnson | 50 | Wife-H | — | Maryland |
| 81 | Carroll Myers | 21 | Nephew | Laborer | Maryland |
| 82 | Campbell Myers | 18 | Nephew | Laborer | Maryland |
| 83 | Caroline Myers | 8 | Niece | — | Maryland |
| 84 | Harry H Brown | 38 | Head | Laborer | Maryland |
| 85 | Battie R Brown | 34 | Wife-H | — | Maryland |
| 86 | Isaac Williams THIS PERSON | 47 | Head | Laborer | Maryland |
| 87 | Jessie E Williams | 41 | Wife-H | Laundress | Maryland |
| 88 | Grace E Williams | 21 | Daughter | — | Maryland |
| 89 | Harry M Williams | 7 | Son | — | Maryland |
| 90 | Charles E Williams | 6 | Son | — | Maryland |
| 91 | Edith M Norton | 20 | Daughter | — | Maryland |
| 92 | Evelyn B Norton | 1 | Granddaughter | — | Maryland |
| 93 | Simon Brown | 50 | Head | Farmer | Maryland |
| 94 | Margaret E Brown | 35 | Wife-H | — | Maryland |
| 95 | Margaret M Brown | 13 | Daughter | — | Maryland |
| 96 | Beatrice L Brown | 9 | Daughter | — | Maryland |
| 97 | Alice L Brown | 7 | Daughter | — | Maryland |
| 98 | Gladys L Brown | 4 | Daughter | — | Maryland |
| 99 | John H Jones | 55 | Head | Farmer | Maryland |
| 100 | Carrie A Jones | 45 | Wife-H | — | Maryland |
Related Census Records
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)