WC
William Cobb — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Dade, Florida
Our Model Tree links this William Cobb across the 1930 and 1940 US Censuses in Dade, Florida (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 9-person household.
Age 11
b. ~1919
Male
Son
Born: Alabama
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Dade, Florida |
| Surname | Cobb |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Miami |
| Est. Birth Year | ~1919 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| James Cobb | Head | — | 38 | ~1892 |
| Sarah Cobb | Daughter | — | ~1930 | |
| Lula Cobb | Spouse | — | 35 | ~1895 |
| John Cobb | Son | — | 2 | ~1928 |
| Lula Cobb | Daughter | — | 5 | ~1925 |
| William Cobb | Son | — | 11 | ~1919 |
| Robert Cobb | Son | — | 8 | ~1922 |
| James Cobb | Son | — | 16 | ~1914 |
| Mary Cobb | Daughter | — | 14 | ~1916 |
Census Appearances
1930
Dade, Florida
Son, age 11
Dade, Florida · implied b. ~1919 — 9 household members
| Surname | Cobb |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Dade-County, Florida
Other, age 20
Dade-County, Florida · implied b. ~1920 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | Wallace |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Miami |
| 1935 Residence (County) | Dade |
| Occupation | Assistant Mgr |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 29 |
| Income (1939) | 1300 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 William Cobb across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Cobb
Son · 1930 · age 11 · b. ~1919 · Florida
★ You are viewing this record
Sibling
James Cobb
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Cobb
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Cobb
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Cobb
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Cobb
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lula Cobb
Sibling · 1930 · age 5
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 — Dade, Florida
Open full size
1930 US Federal Census — Dade, Florida
Page Contents
50 people indexed on this census page (ia:1930:15thcensus842unit:0233)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | James L Cobb | 38 | Head | Farmer | Alabama |
| 52 | Lula Cobb | 35 | Wife | — | Alabama |
| 53 | James L Jr Cobb | 16 | Son | Farm Laborer | Alabama |
| 54 | Mary E Cobb | 14 | Daughter | — | Alabama |
| 55 | William H Cobb THIS PERSON | 11 | Son | — | Alabama |
| 56 | Robert L Cobb | 8 | Son | — | Alabama |
| 57 | Lula M Cobb | 5 | Daughter | — | Alabama |
| 58 | John H Cobb | 2 | Son | — | Alabama |
| 59 | Sarah J Cobb | 0 | Daughter | — | Alabama |
| 60 | William H Cobb | 51 | Head | Farmer | Alabama |
| 61 | Mary E Cobb | 44 | Wife | — | Alabama |
| 62 | William H Jr Cobb | 21 | Son | Farm Laborer | Alabama |
| 63 | Robert L Cobb | 19 | Son | Farm Laborer | Alabama |
| 64 | James L Cobb | 17 | Son | Farm Laborer | Alabama |
| 65 | Lula M Cobb | 15 | Daughter | — | Alabama |
| 66 | John H Cobb | 13 | Son | — | Alabama |
| 67 | Sarah J Cobb | 11 | Daughter | — | Alabama |
| 68 | Mary E Cobb | 9 | Daughter | — | Alabama |
| 69 | William H Jr Cobb | 7 | Son | — | Alabama |
| 70 | Robert L Cobb | 5 | Son | — | Alabama |
| 71 | James L Cobb | 3 | Son | — | Alabama |
| 72 | Lula M Cobb | 1 | Daughter | — | Alabama |
| 73 | John H Cobb | 0 | Son | — | Alabama |
| 74 | Sarah J Cobb | 0 | Daughter | — | Alabama |
| 75 | William H Cobb | 51 | Head | Farmer | Alabama |
| 76 | Mary E Cobb | 44 | Wife | — | Alabama |
| 77 | William H Jr Cobb | 21 | Son | Farm Laborer | Alabama |
| 78 | Robert L Cobb | 19 | Son | Farm Laborer | Alabama |
| 79 | James L Cobb | 17 | Son | Farm Laborer | Alabama |
| 80 | Lula M Cobb | 15 | Daughter | — | Alabama |
| 81 | John H Cobb | 13 | Son | — | Alabama |
| 82 | Sarah J Cobb | 11 | Daughter | — | Alabama |
| 83 | Mary E Cobb | 9 | Daughter | — | Alabama |
| 84 | William H Jr Cobb | 7 | Son | — | Alabama |
| 85 | Robert L Cobb | 5 | Son | — | Alabama |
| 86 | James L Cobb | 3 | Son | — | Alabama |
| 87 | Lula M Cobb | 1 | Daughter | — | Alabama |
| 88 | John H Cobb | 0 | Son | — | Alabama |
| 89 | Sarah J Cobb | 0 | Daughter | — | Alabama |
| 90 | William H Cobb | 51 | Head | Farmer | Alabama |
| 91 | Mary E Cobb | 44 | Wife | — | Alabama |
| 92 | William H Jr Cobb | 21 | Son | Farm Laborer | Alabama |
| 93 | Robert L Cobb | 19 | Son | Farm Laborer | Alabama |
| 94 | James L Cobb | 17 | Son | Farm Laborer | Alabama |
| 95 | Lula M Cobb | 15 | Daughter | — | Alabama |
| 96 | John H Cobb | 13 | Son | — | Alabama |
| 97 | Sarah J Cobb | 11 | Daughter | — | Alabama |
| 98 | Mary E Cobb | 9 | Daughter | — | Alabama |
| 99 | William H Jr Cobb | 7 | Son | — | Alabama |
| 100 | Robert L Cobb | 5 | Son | — | Alabama |
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)