JB
John Blackwell — 1930 US Census Record
Model Tree available1930 United States Federal Census · Randolph, Missouri
Our Model Tree links this John Blackwell across the 1920, 1930 and 1940 US Censuses in Randolph, Missouri (XGBoost, ~Confirmed), with identified parents J & John — first a son (b.~1915), then head of a 5-person household.
Age 15
b. ~1915
Male
Son
Born: Missouri
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Randolph, Missouri |
| Surname | Blackwell |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Moberly City |
| Est. Birth Year | ~1915 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margery Blackwell | Daughter | — | 1 | ~1929 |
| Alma Blackwell | Spouse | — | 35 | ~1895 |
| John Blackwell | Head | — | 47 | ~1883 |
| Marshall Blackwell | Son | — | 11 | ~1919 |
| John Blackwell | Son | — | 15 | ~1915 |
Census Appearances
1920
Randolph, Missouri
Son, age 5
Randolph, Missouri · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Randolph, Missouri
Son, age 15
Randolph, Missouri · implied b. ~1915 — 5 household members
| Surname | Blackwell |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Randolph-County, Missouri
Son, age 26
Randolph-County, Missouri · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | Johnnie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Moberly |
| 1935 Residence (County) | Randolph |
| Occupation | Truck Driver |
| Industry | Salvage Company |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 212 |
| Highest Grade | H 3 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 John Blackwell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father J Blackwell (~0.92 confidence) and father John Blackwell (~0.92 confidence) and father John Blackwell (~0.92 confidence) and mother Alma Blackwell (~0.92 confidence) and mother Annie Blackwell (~0.92 confidence) and mother Annie Blackwell (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
J Blackwell
b. ~1882
Source father
● Household
· direct · ~0.92
Father
John Blackwell
b. ~1883
Source father
● Household
· direct · ~0.92
Father
John Blackwell
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Alma Blackwell
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Annie Blackwell
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Annie Blackwell
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Blackwell
Son · 1930 · age 15 · b. ~1915 · Missouri
★ You are viewing this record
Sibling
Marshall Blackwell
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margery Blackwell
Sibling · 1930 · age 1
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 — Randolph, Missouri
Open full size
1930 US Federal Census — Randolph, Missouri
Page Contents
50 people indexed on this census page (ia:1930:missouricensus00reel1220:0248)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Roy A. Sparkman | 37 | Head | Supply Clerk | Missouri |
| 52 | Retta M. Sparkman | 32 | Wife | Servant | Missouri |
| 53 | Madeline Sparkman | 13 | Daughter | — | Missouri |
| 54 | Churchill H. Broaddus | 29 | Head | Salesman | Missouri |
| 55 | Ruby E. Broaddus | 20 | Wife | — | Missouri |
| 56 | Wanda F. Broaddus | 1 | Daughter | — | Missouri |
| 57 | Louis Sleyster | 48 | Head | Com. Salesman | Missouri |
| 58 | Lillie J. Sleyster | 40 | Wife | — | Missouri |
| 59 | Frederick W. Sleyster | 6 | Son | — | Missouri |
| 60 | Egroz Codner | 55 | Head | Fireman | Iowa |
| 61 | Lula Codner | 49 | Wife | — | Missouri |
| 62 | Benjamin F. Ward | 27 | Stepson | Laborer | Missouri |
| 63 | William M. Codner | 15 | Adopted Son | — | Missouri |
| 64 | John S. Blackwell | 47 | Head | Pullman | Missouri |
| 65 | Alma C. Blackwell | 35 | Wife | Ironer | Missouri |
| 66 | John M. Blackwell THIS PERSON | 15 | Son | — | Missouri |
| 67 | Marshall L. Blackwell | 11 | Son | — | Missouri |
| 68 | Margery E. Blackwell | 1 | Daughter | — | Missouri |
| 69 | Edward Courtney | 55 | Head | Salesman | Missouri |
| 70 | Anna Courtney | 51 | Wife | — | Missouri |
| 71 | Clarence Courtney | 29 | Son | Laborer | Missouri |
| 72 | Martha Courtney | 18 | Daughter-in-law | — | Missouri |
| 73 | Betty J. Courtney | 1 | Granddaughter | — | Missouri |
| 74 | Simeon Hudson | 75 | Head | News Agent | Missouri |
| 75 | Luella E. Hudson | 70 | Wife | — | Kentucky |
| 76 | Carroll S. Hudson | 40 | Son | Brakeman | Missouri |
| 77 | Anna R. Hudson | 35 | Daughter-in-law | — | Missouri |
| 78 | Delphine L. Hudson | 14 | Granddaughter | — | Missouri |
| 79 | Aulig E. Hudson | 10 | Granddaughter | — | Missouri |
| 80 | Hazel V. Hudson | 7 | Granddaughter | — | Missouri |
| 81 | William M. Vance | 38 | Head | Auditor | Missouri |
| 82 | Bertha E. Vance | 27 | Wife | — | Missouri |
| 83 | Harold R. Vance | 7 | Son | — | Missouri |
| 84 | Nancy J. Stone | 82 | Head | — | Kentucky |
| 85 | David P. Kehoe | 49 | Head | Proprietor | Irish Free State |
| 86 | Vora S. Kehoe | 41 | Wife | Saleslady | Missouri |
| 87 | Lafayette A. Hightower | 54 | Head | Engine Wiper | Missouri |
| 88 | Carrie B. Hightower | 52 | Wife | — | Missouri |
| 89 | Eugene Hightower | 20 | Son | Fireman | Missouri |
| 90 | Gertrude Hightower | 18 | Daughter | Stenographer | Missouri |
| 91 | George E. Walter | 40 | Head | Switchman | Illinois |
| 92 | Agnes M. Walter | 33 | Wife | — | Missouri |
| 93 | George E. Jr. Walter | 10 | Son | — | Missouri |
| 94 | Irene Y. Walter | 7 | Daughter | — | Missouri |
| 95 | William Blackerby | 65 | Father-in-law | — | Missouri |
| 96 | Elizabeth Blackerby | 60 | Mother-in-law | — | Missouri |
| 97 | Myrtle M. Beacon | 35 | Head | — | Missouri |
| 98 | Nellie M. Beacon | 10 | Daughter | — | Missouri |
| 99 | Margaret L. Beacon | 9 | Daughter | — | Missouri |
| 100 | William H. Beacon | 6 | Son | — | Missouri |
Pedigree Summary
John + 2 siblings
Gen 1 · 6 parents
~0.92
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)