RE
Robert Erickson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Robert Erickson across the 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Erickson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Rockford |
| Est. Birth Year | ~1930 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Joanne Erickson | Daughter | — | 2 | ~1938 |
| Robert Erickson | Son | — | 10 | ~1930 |
| Gordon Erickson | Son | — | 7 | ~1933 |
| Dianne Erickson | Daughter | — | 3 | ~1937 |
| Margaret Kjellgren | Other | — | 21 | ~1919 |
| Elna Erickson | Spouse | — | 42 | ~1898 |
| Violet Erickson | Daughter | — | 15 | ~1925 |
| Shirley Erickson | Daughter | — | 8 | ~1932 |
| Elmer Erickson | Head | — | 47 | ~1893 |
Census Appearances
1930
Winnebago, Illinois
Son, age 1
Winnebago, Illinois · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Erickson |
| Given Name | Robert |
| 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 |
1940
Winnebago-County, Illinois
Son, age 10
Winnebago-County, Illinois · implied b. ~1930 — 9 household members
| Surname | Erickson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford |
| 1935 Residence (County) | Winnebago |
| Highest Grade | 4 |
| 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 Robert Erickson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Erickson
Son · 1940 · age 10 · b. ~1930 · Illinois
★ You are viewing this record
Sibling
Violet Erickson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gordon Erickson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Erickson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dianne Erickson
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joanne Erickson
Sibling · 1940 · age 2
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
1940 US Federal Census — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00912-00495)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Everett Fridholm | 27 | Son | Pattern Maker | Sweden |
| 2 | Gertrude Fridholm | 25 | Daughter-in-law | Cashier | Illinois |
| 3 | Oscar A. Johnson | 55 | Brother | Machinist | Sweden |
| 4 | Anton W. Nelson | 53 | Head | Trimmer | Sweden |
| 5 | Anna Maria Nelson | 51 | Wife | — | Sweden |
| 6 | Stanton R. Nelson | 19 | Son | Carrier Boy | Illinois |
| 7 | Charles M. Johnson | 51 | Head | Building Supt | Sweden |
| 8 | Ida V. Johnson | 46 | Wife | Laundress | Pennsylvania |
| 9 | Shirley Mae Johnson | 19 | Daughter | — | Illinois |
| 10 | Jean Johnson | 15 | Daughter | — | Illinois |
| 11 | Beverly Johnson | 13 | Daughter | — | Illinois |
| 12 | Elmer Erickson | 47 | Head | Set Up Man | Sweden |
| 13 | Elna Erickson | 42 | Wife | — | Sweden |
| 14 | Violet Erickson | 15 | Daughter | — | Illinois |
| 15 | Robert Erickson THIS PERSON | 10 | Son | — | Illinois |
| 16 | Shirley Mae Erickson | 8 | Daughter | — | Illinois |
| 17 | Gordon Erickson | 7 | Son | — | Illinois |
| 18 | Dianne Erickson | 3 | Daughter | — | Illinois |
| 19 | Joanne Erickson | 2 | Daughter | — | Illinois |
| 20 | Margaret Kjellgren | 21 | Step-daughter | — | Illinois |
| 21 | Stanley A. Hyland | 35 | Head | Salesman | Minnesota |
| 22 | Margaret O. Hyland | 32 | Wife | — | Wisconsin |
| 23 | Donald Hyland | 6 | Son | — | Illinois |
| 24 | Otto Johnson | 55 | Head | Crater | Sweden |
| 25 | Alfild Johnson | 56 | Wife | — | Sweden |
| 26 | Holger Boman | 39 | Lodger | Tool Maker | Sweden |
| 27 | Elmer Shorell | 36 | Head | Washer | Illinois |
| 28 | Elna Shorell | 31 | Wife | Typist | Illinois |
| 29 | David Anderson | 55 | Head | Machinist | Sweden |
| 30 | Nannie Anderson | 48 | Wife | Housework | Sweden |
| 31 | Claude Lundberg | 63 | Head | Laborer | Sweden |
| 32 | Anna C. Lundberg | 63 | Wife | — | Sweden |
| 33 | Phillip C. Lundberg | 32 | Son | Upholsterer | Illinois |
| 34 | Elna Kjellstrom | 48 | Head | Shirt Finisher | Sweden |
| 35 | Eleanor Kjellstrom | 22 | Daughter | Trained Nurse | Illinois |
| 36 | Elmer Kjellstrom | 17 | Son | — | Illinois |
| 37 | Robert Sr. O'Connor | 36 | Head | Machinist | Illinois |
| 38 | Loraine F. O'Connor | 33 | Wife | — | Illinois |
| 39 | Richard R. O'Connor | 11 | Son | — | Illinois |
| 40 | Mary Lou O'Connor | 5 | Daughter | — | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)