RJ
Roy Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Boone, Iowa
Our Model Tree links this Roy Johnson across the 1920, 1930 and 1940 US Censuses in Boone, Iowa (XGBoost, ~Confirmed), with identified parents Robert & Amy — first a head (b.~1900), then head of a 3-person household.
Age 30
b. ~1900
Male
Head
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Boone, Iowa |
| Surname | Johnson |
| Given Name | Roy C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Garden Township |
| Est. Birth Year | ~1900 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Roy | Age | Birth yr |
|---|---|---|---|---|
| Juanita Johnson | Daughter | — | 3 | ~1927 |
| Roy Johnson | Head | — | 30 | ~1900 |
| Iris Johnson | Spouse | — | 27 | ~1903 |
Census Appearances
1920
Greene, Iowa
Son, age 19
Greene, Iowa · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Roy C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Boone, Iowa
Head, age 30
Boone, Iowa · implied b. ~1900 — 3 household members
| Surname | Johnson |
| Given Name | Roy C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Head, age 40
Boone-County, Iowa · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Ray C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Garden Township |
| 1935 Residence (County) | Boone |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Roy Johnson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Robert Johnson (~0.92 confidence) and mother Amy Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Johnson
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Amy Johnson
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Roy Johnson
Head · 1930 · age 30 · b. ~1900 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Boone, Iowa
Open full size
1930 US Federal Census — Boone, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel643:0927)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter H Lundahl | 41 | Head | Farmer | Iowa |
| 2 | Alta E Lundahl | 45 | Wife | — | Iowa |
| 3 | Harvey H Knowles | 57 | Head | Farmer | Illinois |
| 4 | Florence H Knowles | 41 | Wife | — | Missouri |
| 5 | Harvey E Knowles | 18 | Son | — | Oklahoma |
| 6 | Helen M Knowles | 8 | Daughter | — | Missouri |
| 7 | Ralph J Lundahl | 37 | Head | Farmer | Iowa |
| 8 | Irene A Lundahl | 35 | Wife | — | Nebraska |
| 9 | Betty A Lundahl | 8 | Daughter | — | Iowa |
| 10 | Willard D Lundahl | 4 | Son | — | Iowa |
| 11 | Bernice L Lundahl | 2 | Son | — | Iowa |
| 12 | Geo E Clark | 47 | Hired hand | Laborer | Iowa |
| 13 | Alfred E Carlson | 54 | Head | Farmer | Sweden |
| 14 | Emma S Carlson | 54 | Wife | — | Iowa |
| 15 | Alvin S Carlson | 26 | Son | Farmer | Iowa |
| 16 | Edna E Carlson | 17 | Daughter | — | Iowa |
| 17 | Ellen R Carlson | 11 | Daughter | — | Iowa |
| 18 | Melvin E Page | 58 | Head | Farmer | Iowa |
| 19 | Grace H Page | 51 | Wife | — | Iowa |
| 20 | Katharine W Page | 20 | Daughter | — | Iowa |
| 21 | Fred L Page | 14 | Son | — | Iowa |
| 22 | Henry L Walters | 35 | Head | Farm Laborer | Arkansas |
| 23 | Lena T Walters | 32 | Wife | — | Iowa |
| 24 | Iren M Walters | 10 | Daughter | — | Iowa |
| 25 | Leroy W Walters | 7 | Son | — | Iowa |
| 26 | Lester M Walters | 5 | Son | — | Iowa |
| 27 | Betty J Walters | 2 | Daughter | — | Iowa |
| 28 | Raymond L Walters | 0 | Son | — | Iowa |
| 29 | Arthur B Mclean | 42 | Head | Farmer | Iowa |
| 30 | Bernice L Mclean | 32 | Wife | — | Iowa |
| 31 | Arthur E Mclean | 20 | Son | — | Iowa |
| 32 | William L Peterson | 33 | Boarder | — | Illinois |
| 33 | Vellmer E Benson | 29 | Head | Farm Laborer | Iowa |
| 34 | Ina H Benson | 25 | Wife | — | Iowa |
| 35 | Betty J Benson | 7 | Daughter | — | Iowa |
| 36 | Wilbur D Benson | 6 | Son | — | Iowa |
| 37 | Marvin W Benson | 5 | Son | — | Iowa |
| 38 | Roy C Johnson THIS PERSON | 30 | Head | Farmer | Illinois |
| 39 | Iris R Johnson | 27 | Wife | — | Iowa |
| 40 | Juanita Johnson | 3 | Daughter | — | Iowa |
| 41 | Lorin Hamilton | 41 | Head | Farmer | Indiana |
| 42 | Elizabeth H Hamilton | 37 | Wife | — | Iowa |
| 43 | Franklin T Carlson | 62 | Head | Farmer | Iowa |
| 44 | Tillie E Carlson | 55 | Wife | — | Iowa |
| 45 | Marion W Carlson | 21 | Son | — | Iowa |
| 46 | Eldren J Carlson | 17 | Son | — | Iowa |
| 47 | Loyd F Carlson | 16 | Son | — | Iowa |
| 48 | Robert M Carlson | 8 | Son | — | Iowa |
| 49 | Emery H Luther | 25 | Head | Farm | Iowa |
| 50 | Hazel I Luther | 26 | Wife | — | Minnesota |
Related Census Records
Pedigree Summary
Roy
Gen 1 · 2 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)