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Ralph Wilson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boulder-County, Colorado
Our Model Tree links this Ralph Wilson across the 1930 and 1940 US Censuses in Boulder-County, Colorado (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boulder-County, Colorado |
| Surname | WILSON |
| Given Name | Ralph A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | LOUISVILLE |
| 1935 Residence (County) | Boulder |
| Additional Details | |
| Highest Grade | S 6 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Louisville |
| Est. Birth Year | ~1928 |
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 Ralph | Age | Birth yr |
|---|---|---|---|---|
| Nadine Wilson | Daughter | — | 10 | ~1930 |
| Dorothy Wilson | Daughter | — | ~1940 | |
| Janice Wilson | Daughter | — | 3 | ~1937 |
| Ralph Wilson | Son | — | 12 | ~1928 |
| Arlo Wilson | Head | — | 32 | ~1908 |
| Daisy Wilson | Daughter | — | 6 | ~1934 |
| Sonja Wilson | Daughter | — | 1 | ~1939 |
| Margie Wilson | Daughter | — | 8 | ~1932 |
| Daisy Wilson | Spouse | — | 36 | ~1904 |
Census Appearances
1930
Boulder, Colorado
Son, age 2
Boulder, Colorado · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wilson |
| Given Name | Ralph A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Boulder-County, Colorado
Son, age 12
Boulder-County, Colorado · implied b. ~1928 — 9 household members
| Surname | WILSON |
| Given Name | Ralph A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | LOUISVILLE |
| 1935 Residence (County) | Boulder |
| Highest Grade | S 6 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Ralph Wilson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ralph Wilson
Son · 1940 · age 12 · b. ~1928 · Colorado
★ You are viewing this record
Sibling
Daisy Wilson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Wilson
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nadine Wilson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sonja Wilson
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Janice Wilson
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margie Wilson
Sibling · 1940 · age 8
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 — Boulder-County, Colorado
Open full size
1940 US Federal Census — Boulder-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00457-00315)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nora Wilkinson | 10 | Daughter | — | Iowa |
| 2 | Son Gladstone | 8 | Son | — | Iowa |
| 3 | Charles Barrett | 53 | Head | Foreman | Italy |
| 4 | Gertie Barrett | 48 | Wife | — | PENNSYLVANIA |
| 5 | Arthur E. Thompson | 39 | Head | Mine Foreman | Colorado |
| 6 | Mattie L. Thompson | 42 | Wife | — | Missouri |
| 7 | Hennith Thompson | 16 | Son | — | Colorado |
| 8 | Wilma Jean Thompson | 11 | daughter | — | Missouri |
| 9 | Shirley Sue Thompson | 7 | daughter | — | Colorado |
| 10 | George A. Seeley | 71 | Head | — | Pennsylvania |
| 11 | Daphia V. Seeley | 70 | Wife | — | Illinois |
| 12 | Vincent A. Mangus | 33 | Head | Retail Merchant | Colorado |
| 13 | Flora Mangus | 24 | Wife | — | Colorado |
| 14 | Vincent Jr. Mangus | 2 | Son | — | Colorado |
| 15 | William C. Mangus | 1 | Son | — | Colorado |
| 16 | Willis W. Park | 66 | Head | Miner | New York |
| 17 | Elizabeth Park | 60 | Wife | — | ENGLAND |
| 18 | William Flavell | 63 | Lodger | — | ENGLAND |
| 19 | Arlo A. Wilson | 32 | Head | Miner | Colorado |
| 20 | Daisy S. Wilson | 36 | Wife | — | Colorado |
| 21 | Ralph A. Wilson THIS PERSON | 12 | Son | — | Colorado |
| 22 | Nadine E. Wilson | 10 | daughter | — | Colorado |
| 23 | Margie L. Wilson | 8 | daughter | — | Colorado |
| 24 | Daisy E. Wilson | 6 | daughter | — | Colorado |
| 25 | Janice E. Wilson | 3 | daughter | — | Colorado |
| 26 | Sonja A. Wilson | 1 | daughter | — | Colorado |
| 27 | Dorothy E. Wilson | 0 | daughter | — | Colorado |
| 28 | Nicholas Thomas | 67 | Head | Coal Operator | ENGLAND |
| 29 | Elizabeth Thomas | 67 | WIFE | — | ENGLAND |
| 30 | Quentin C. Thomas | 31 | Son | Coal Operator | Colorado |
| 31 | Mary E. Thomas | 29 | daughter | Book Keeper | Colorado |
| 32 | Elizabeth Thomas | 25 | daughter | — | Colorado |
| 33 | Matha J. Davis | 38 | Head | — | Missouri |
| 34 | James L. Davis | 19 | Son | Electrical Engineer | Colorado |
| 35 | Josephine E. Davis | 18 | daughter | — | Colorado |
| 36 | Charles V. Davis | 15 | Son | — | Colorado |
| 37 | Clyde M. Davis | 9 | daughter | — | Colorado |
| 38 | Leslie C. Graves | 34 | Head | Electrician | Colorado |
| 39 | Alice H. Graves | 29 | Wife | — | Colorado |
| 40 | James L. Graves | 4 | Son | — | Colorado |
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)