AJ
Alvin Johnson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Shelby, Iowa
Our Model Tree links this Alvin Johnson across the 1920 and 1930 US Censuses in Shelby, Iowa (XGBoost, ~Confirmed) — first a son (b.~1909), then head of a 8-person household.
Age 21
b. ~1909
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Shelby, Iowa |
| Surname | Johnson |
| Given Name | Alvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Clay Township |
| Est. Birth Year | ~1909 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Alvin | Age | Birth yr |
|---|---|---|---|---|
| N Johnson | Head | — | 49 | ~1881 |
| Alvin Johnson | Son | — | 21 | ~1909 |
| Kent Johnson | Son | — | 6 | ~1924 |
| Goldie Johnson | Daughter | — | 19 | ~1911 |
| Sylvia Johnson | Daughter | — | 16 | ~1914 |
| Leroy Johnson | Son | — | 23 | ~1907 |
| Agnes Johnson | Spouse | — | 47 | ~1883 |
| Velma Johnson | Son | — | 13 | ~1917 |
Census Appearances
1920
Shelby, Iowa
Son, age 11
Shelby, Iowa · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Shelby, Iowa
Son, age 21
Shelby, Iowa · implied b. ~1909 — 8 household members
| Surname | Johnson |
| Given Name | Alvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Alvin Johnson across 2 US Census years (1920 and 1930) in Shelby, Iowa, using XGBoost record linkage.
Show:
This person
Anchor record
Alvin Johnson
Son · 1930 · age 21 · b. ~1909 · Iowa
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Sibling
Leroy Johnson
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Goldie Johnson
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kent Johnson
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sylvia Johnson
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Velma Johnson
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 — Shelby, Iowa
Open full size
1930 US Federal Census — Shelby, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel682:0554)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Laura Carstensen | 43 | Sister | Servant | Iowa |
| 52 | Hans Carstensen | 29 | Brother | Laborer | Iowa |
| 53 | Nels Hansen | 54 | Head | Farmer | Denmark |
| 54 | Nels Jr Hansen | 11 | Son | — | Iowa |
| 55 | Helm M Hansen | 9 | Daughter | — | Iowa |
| 56 | Archie Crory | 36 | Head | Farmer | Iowa |
| 57 | Anna Crory | 32 | Wife | — | Iowa |
| 58 | Donald Crory | 10 | Son | — | Iowa |
| 59 | Glen Crory | 5 | Son | — | Iowa |
| 60 | Leroy Hansen | 18 | Boarder | Laborer | Iowa |
| 61 | Florence Hansen | 20 | Boarder | Servant | Iowa |
| 62 | Earl Smith | 42 | Head | Farmer | Iowa |
| 63 | Clara Smith | 43 | Wife | — | Iowa |
| 64 | Mildred Smith | 20 | Daughter | — | Iowa |
| 65 | Howard Smith | 17 | Son | — | Iowa |
| 66 | Grace Petersen | 19 | Boarder | Servant | Iowa |
| 67 | H. A. Coon | 38 | Head | Laborer | Missouri |
| 68 | Nellie Coon | 25 | Wife | — | Missouri |
| 69 | Dean Coon | 5 | Daughter | — | Iowa |
| 70 | Carmen Coon | 3 | Daughter | — | Iowa |
| 71 | N. P. Johnson | 49 | Head | Farmer | Iowa |
| 72 | Agnes Johnson | 47 | Wife | — | Iowa |
| 73 | Leroy Johnson | 23 | Son | Laborer | Iowa |
| 74 | Alvin Johnson THIS PERSON | 21 | Son | Laborer | Iowa |
| 75 | Velma Johnson | 13 | Son | — | Iowa |
| 76 | Kent Johnson | 6 | Son | — | Iowa |
| 77 | Goldie Johnson | 19 | Daughter | — | Iowa |
| 78 | Sylvia Johnson | 16 | Daughter | — | Iowa |
| 79 | Theodore Nelson | 35 | Head | Farmer | Iowa |
| 80 | Lela Nelson | 35 | Wife | — | Iowa |
| 81 | Stewart Nelson | 11 | Son | — | Iowa |
| 82 | Olle A. Andersen | 35 | Head | Farmer | Iowa |
| 83 | Anna Andersen | 27 | Wife | — | Denmark |
| 84 | Linn Andersen | 7 | Son | — | Iowa |
| 85 | Kenneth Andersen | 3 | Son | — | Iowa |
| 86 | Viggo Andersen | 41 | Brother | Laborer | Iowa |
| 87 | William Rasmussen | 37 | Boarder | Laborer | Denmark |
| 88 | Chris Rattinho | 58 | Head | Farmer | Denmark |
| 89 | Gudrun Rattinho | 46 | Wife | — | Denmark |
| 90 | Harry Rattinho | 25 | Son | Laborer | Iowa |
| 91 | Holger Rattinho | 24 | Son | Laborer | Iowa |
| 92 | Andrew Rattinho | 19 | Son | Laborer | Iowa |
| 93 | Anna Rattinho | 21 | Daughter | Servant | Iowa |
| 94 | Milo Rattinho | 16 | Son | — | Iowa |
| 95 | Valborg Rattinho | 14 | Daughter | — | Iowa |
| 96 | Chris C. Larsen | 46 | Head | Farmer | Indiana |
| 97 | Kamilla Larsen | 44 | Wife | — | Iowa |
| 98 | Leo Larsen | 22 | Son | Laborer | Iowa |
| 99 | John F. Miller | 41 | Head | Farmer | Iowa |
| 100 | Marie E. Miller | 37 | Wife | — | Iowa |
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)