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John Blackburn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Davidson, Tennessee
Our Model Tree links this John Blackburn across the 1930 and 1940 US Censuses in Davidson, Tennessee (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 7-person household.
Age 7
b. ~1923
Male
Son
Born: Tennessee
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Davidson, Tennessee |
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Tennessee |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Township / Ward | Nashville City |
| Est. Birth Year | ~1923 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Doris Blackburn | Daughter | — | 15 | ~1915 |
| Richard Blackburn | Son | — | 13 | ~1917 |
| H Blackburn | Head | — | 41 | ~1889 |
| Pearl Blackburn | Spouse | — | 33 | ~1897 |
| Elsie Blackburn | Daughter | — | 17 | ~1913 |
| Judith Blackburn | Daughter | — | 5 | ~1925 |
| John Blackburn | Son | — | 7 | ~1923 |
Census Appearances
1930
Davidson, Tennessee
Son, age 7
Davidson, Tennessee · implied b. ~1923 — 7 household members
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Tennessee |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Davidson-County, Tennessee
Son, age 17
Davidson-County, Tennessee · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackburn |
| Given Name | Johnny |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Nashville city |
| 1935 Residence (County) | Davidson |
| Occupation | Delivery Boy |
| Industry | Drugstore |
| Class of Worker | PW |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 Blackburn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Blackburn
Son · 1930 · age 7 · b. ~1923 · Tennessee
★ You are viewing this record
Sibling
Judith Blackburn
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elsie Blackburn
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Blackburn
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Blackburn
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 — Davidson, Tennessee
Open full size
1930 US Federal Census — Davidson, Tennessee
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2241unit:0362)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | J. A. Harrison | 53 | Head | Salesman | Tennessee |
| 2 | Ola Harrison | 46 | Wife | — | Tennessee |
| 3 | Rosalie Harrison | 21 | Daughter | Stenographer | Tennessee |
| 4 | J. H. Thrasher | 41 | Head | Machine Operator | Tennessee |
| 5 | Madge Thrasher | 33 | Wife | Seamstress | Tennessee |
| 6 | Helen Thrasher | 12 | Daughter | — | Tennessee |
| 7 | H. O. Blackburn | 41 | Head | Auditor | North Carolina |
| 8 | Pearl Blackburn | 33 | Wife | — | Tennessee |
| 9 | Elsie Blackburn | 17 | Daughter | Errand Boy | Tennessee |
| 10 | Doris Blackburn | 15 | Daughter | — | Tennessee |
| 11 | Richard Blackburn | 13 | Son | — | Tennessee |
| 12 | John Blackburn THIS PERSON | 7 | Son | — | Tennessee |
| 13 | Judith Blackburn | 5 | Daughter | — | Tennessee |
| 14 | James F. Knight | 61 | Head | Engineer | Tennessee |
| 15 | Lida Knight | 45 | Wife | — | Tennessee |
| 16 | Earl Culbreath | 27 | Head | Mechanic | Tennessee |
| 17 | Elizabeth Culbreath | 26 | Wife | — | Tennessee |
| 18 | W. G. Herr | 53 | Head | Conductor | Tennessee |
| 19 | Flora M. Herr | 52 | Wife | — | Tennessee |
| 20 | William Herr | 20 | Son | Salesman | Tennessee |
| 21 | Katherine Herr | 17 | Daughter | — | Tennessee |
| 22 | Amis Saxon | 75 | Head | — | Tennessee |
| 23 | Mary Saxon | 51 | Daughter | Stenographer | Tennessee |
| 24 | S. B. Saxon | 40 | Son | Agent | Tennessee |
| 25 | Sallie Martin | 14 | Sister | — | Tennessee |
| 26 | Joseph Barnes | 41 | Head | Brakeman | Tennessee |
| 27 | Lula Barnes | 40 | Wife | — | Tennessee |
| 28 | Joseph Jr. Barnes | 12 | Son | — | Tennessee |
| 29 | Elizabeth Barnes | 9 | Daughter | — | Tennessee |
| 30 | Tucker Johnson | 52 | Head | Salesman | Tennessee |
| 31 | Sammie Johnson | 45 | Wife | — | Wyoming |
| 32 | Elias Perkins | 62 | Head | Developer | Kentucky |
| 33 | Lula Perkins | 54 | Sister | Carpenter | Missouri |
| 34 | Walter Venson | 32 | Head | Mechanic | Tennessee |
| 35 | Clara Venson | 34 | Wife | — | Tennessee |
| 36 | Mary C. Venson | 10 | Daughter | — | Tennessee |
| 37 | Sara Venson | 7 | Daughter | — | Tennessee |
| 38 | James Venson | 5 | Son | — | Tennessee |
| 39 | Thelma Venson | 3 | Daughter | — | Tennessee |
| 40 | Hattie Venson | 54 | Mother | — | Tennessee |
| 41 | Sara Venson | 19 | Sister | Waitress | Tennessee |
| 42 | Charles Darrow | 21 | Boarder | — | Tennessee |
| 43 | Richard Mcreynolds | 37 | Head | Merchant | Tennessee |
| 44 | Ruby Mcreynolds | 30 | Wife | — | Tennessee |
| 45 | Louise Henry | 25 | Head | Stenographer | Tennessee |
| 46 | Sadie Henry | 65 | Mother | — | Tennessee |
| 47 | Clairborne Wells | 33 | Head | Letter Carrier | Tennessee |
| 48 | Beulah Wells | 27 | Wife | — | Tennessee |
| 49 | Katherine Wells | 9 | Daughter | — | Tennessee |
| 50 | Clairborne Wells | 3 | Son | — | Tennessee |
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)