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Donald Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Rock Island, Illinois
Our Model Tree links this Donald Johnson across the 1910, 1920 and 1930 US Censuses in Rock Island, Illinois (XGBoost, ~Confirmed), with identified parents Bernard & Leonard — first a son (b.~1909), then head of a 6-person household.
Age 21
b. ~1909
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Rock Island, Illinois |
| Surname | Johnson |
| Given Name | Donald B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Public Utilities |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Bookkeeper |
| Township / Ward | Moline City |
| 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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Signe Johnson | Daughter | — | 36 | ~1894 |
| Bernard Johnson | Head | — | 67 | ~1863 |
| Minnie Johnson | Other | — | 62 | ~1868 |
| Rudolph Johnson | Son | — | 34 | ~1896 |
| Paul Johnson | Son | — | 24 | ~1906 |
| Donald Johnson | Son | — | 21 | ~1909 |
Census Appearances
1910
Rock Island, …
Son, age 1
Rock Island, Illinois · implied b. ~1909 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Rock Island, …
Son, age 10
Rock Island, Illinois · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Donald R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Son, age 21
Rock Island, Illinois · implied b. ~1909 — 6 household members
| Surname | Johnson |
| Given Name | Donald B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Bookkeeper |
| Industry | Public Utilities |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Donald Johnson across 3 US Census years (1910, 1920 and 1930) in Rock Island, Illinois, using XGBoost record linkage. Identified parents: father Bernard Johnson (~0.92 confidence) and father Leonard Johnson (~0.92 confidence) and mother Emma Johnson (~0.92 confidence) and father Leonard Johnson (~0.92 confidence) and mother Minnie Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bernard Johnson
b. ~1863
Source father
● Household
· direct · ~0.92
Father
Leonard Johnson
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Emma Johnson
b. ~1868
Source mother
● Household
· direct · ~0.92
Father
Leonard Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Minnie Johnson
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Johnson
Son · 1930 · age 21 · b. ~1909 · Illinois
★ You are viewing this record
Sibling
Signe Johnson
Sibling · 1930 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rudolph Johnson
Sibling · 1930 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Johnson
Sibling · 1930 · age 24
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 — Rock Island, Illinois
Open full size
1930 US Federal Census — Rock Island, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel552:0736)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Getz Thomas G | 2 | Son | None | Illinois |
| 52 | Kling Agnes | 21 | Servant | House Maid | Sweden |
| 53 | Shoode Bessie | 23 | Servant | Cook | Missouri |
| 54 | Everell Strout | 35 | Head | Chauffeur | Iowa |
| 55 | Hazel Strout | 31 | Wife-H | None | Iowa |
| 56 | Virginia Kerasacke | 44 | Head-H | None | Lithuania |
| 57 | Phillip Kerasacke | 22 | Son | Laborer | Illinois |
| 58 | Anna Kerasacke | 18 | Daughter | Stenographer | Illinois |
| 59 | Oscar Bauwens | 53 | Lodger | Salesman | Belgium |
| 60 | Rudolph Anderson | 23 | Head | Packer | Illinois |
| 61 | Louise Anderson | 21 | Wife-H | None | Illinois |
| 62 | Bernard Johnson | 67 | Head | Molder | Sweden |
| 63 | Minnie Johnson | 62 | Wife-H | None | Sweden |
| 64 | Signe E Johnson | 36 | Daughter | Teacher | Illinois |
| 65 | Rudolph M Johnson | 34 | Son | Meat-Cutter | Illinois |
| 66 | Paul F Johnson | 24 | Son | Salesman | Illinois |
| 67 | Donald B Johnson THIS PERSON | 21 | Son | Bookkeeper | Illinois |
| 68 | William J Coulter | 40 | Head | Agriculturalist | Illinois |
| 69 | Helen M Coulter | 39 | Wife-H | None | Illinois |
| 70 | Elizabeth J Coulter | 16 | Daughter | None | Illinois |
| 71 | Robert M Coulter | 11 | Son | None | Illinois |
| 72 | Daniel W Ford | 53 | Head | Salesman | Illinois |
| 73 | Lola Belle Ford | 58 | Wife-H | None | Illinois |
| 74 | Dorothy E Ford | 22 | Daughter | Clerk | Illinois |
| 75 | Eleanor M Ford | 21 | Daughter | Stenographer | Illinois |
| 76 | Eva Anderberg | 28 | Daughter | None | Illinois |
| 77 | Arthur Wilson | 25 | Head | Advertising Man | Iowa |
| 78 | Mabel Wilson | 21 | Wife-H | None | Iowa |
| 79 | Carl A Larson | 54 | Head | Proprietor | Sweden |
| 80 | Anna M Larson | 56 | Wife-H | None | Illinois |
| 81 | Carolyn E Larson | 25 | Daughter | Teacher | Illinois |
| 82 | Marion A Larson | 22 | Daughter | Bookkeeper | Illinois |
| 83 | Florence V Larson | 21 | Daughter | None | Illinois |
| 84 | John P Larson | 19 | Son | None | Illinois |
| 85 | Anna E Hedquist | 46 | Lodger | Nurse | Sweden |
| 86 | David Nyquist | 38 | Head | Salesman | Sweden |
| 87 | Esther Nyquist | 33 | Wife-H | None | Wisconsin |
| 88 | Vivian Nyquist | 5 | Daughter | None | Wisconsin |
| 89 | Winton Nyquist | 3 | Son | None | Wisconsin |
| 90 | Arnold Ericson | 26 | Bro-in-law | Assembler | Wisconsin |
| 91 | Godfrey Ericson | 23 | Bro-in-law | Machinist | Wisconsin |
| 92 | Ole Rodatum | 21 | Lodger | Machinist | Sweden |
| 93 | Nellie Whetsell | 79 | Head-H | None | Sweden |
| 94 | William E Patterson | 29 | Head | Foreman | Illinois |
| 95 | Pauline M Patterson | 24 | Wife-H | None | Illinois |
| 96 | William E Patterson | 1 | Son | None | Illinois |
| 97 | Paul Klimetz | 40 | Lodger | Painter | Czechoslovakia |
| 98 | Oscar Mellander | 64 | Lodger | Laborer | Sweden |
| 99 | George Alto | 24 | Lodger | Carpenter | Finland |
| 100 | David Johnson | 24 | Lodger | Molder | Sweden |
Pedigree Summary
Donald + 3 siblings
Gen 1 · 5 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)