MW
Melvin Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dubuque-County, Iowa
Our Model Tree links this Melvin Williams across the 1920, 1930 and 1940 US Censuses in Dubuque-County, Iowa (XGBoost, ~Confirmed), with identified parents D & J — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dubuque-County, Iowa |
| Surname | Williams |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Dubuque city |
| 1935 Residence (County) | Dubuque |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Bottling |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Truck Driver |
| Township / Ward | Dubuque City |
| Est. Birth Year | ~1919 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Melvin | Age | Birth yr |
|---|---|---|---|---|
| D Williams | Head | — | 48 | ~1892 |
| Melvin Williams | Son | — | 21 | ~1919 |
| Edna Williams | Spouse | — | 49 | ~1891 |
| George Martin | Other | — | 52 | ~1888 |
Census Appearances
1920
Dubuque, Iowa
Son, age
Dubuque, Iowa · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Dubuque, Iowa
Son, age 11
Dubuque, Iowa · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Dubuque-County, Iowa
Son, age 21
Dubuque-County, Iowa · implied b. ~1919 — 4 household members
| Surname | Williams |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Dubuque city |
| 1935 Residence (County) | Dubuque |
| Occupation | Truck Driver |
| Industry | Bottling |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| 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 Melvin Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father D Williams (~0.92 confidence) and father J Williams (~0.92 confidence) and mother Edna Williams (~0.92 confidence) and mother Edna Williams (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
D Williams
b. ~1892
Source father
● Household
· direct · ~0.92
Father
J Williams
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Edna Williams
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Edna Williams
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Melvin Williams
Son · 1940 · age 21 · b. ~1919 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Dubuque-County, Iowa
Open full size
1940 US Federal Census — Dubuque-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01158-00986)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward M. Olmstead | 44 | Head | Truck Driver | Iowa |
| 2 | Velma M. Olmstead | 43 | Wife | — | Iowa |
| 3 | Shirley Olmstead | 18 | Daughter | Clerk | Iowa |
| 4 | D. Hilery Williams | 48 | Head | Maintenance Man | Iowa |
| 5 | Edna Williams | 49 | Wife | — | Iowa |
| 6 | Melvin Williams THIS PERSON | 21 | Son | Truck Driver | Iowa |
| 7 | George Martin | 52 | Brother-in-law | Grinder | Iowa |
| 8 | Joseph C. Jones | 48 | Head | Janitor | Michigan |
| 9 | Joseph C. Jones | 16 | Son | — | Illinois |
| 10 | Eliza R. Jones | 44 | Sister | Clerk | Michigan |
| 11 | William H. Gordon | 36 | Head | Operator | Illinois |
| 12 | Mary Gordon | 40 | Wife | — | Iowa |
| 13 | Virginia Gordon | 15 | Daughter | — | Iowa |
| 14 | Doris M. Gordon | 13 | Daughter | — | Iowa |
| 15 | Joyce M. Gordon | 9 | Daughter | — | Iowa |
| 16 | Willard Gordon | 2 | Son | — | Iowa |
| 17 | Mary Gordon | 0 | Daughter | — | Iowa |
| 18 | Joseph M. Harking | 39 | Head | Traveling Salesman | Iowa |
| 19 | Sheila E. Harking | 41 | Wife | — | Iowa |
| 20 | Donald J. Harking | 12 | Son | — | Iowa |
| 21 | Elizabeth E. Harking | 7 | Daughter | — | Iowa |
| 22 | Lester J. Streinz | 43 | Head | Draftsman | Iowa |
| 23 | Elsie A. Streinz | 48 | Wife | — | Iowa |
| 24 | Rosemary Streinz | 13 | Daughter | — | Iowa |
| 25 | William A. Higgins | 46 | Head | Lieutenant | Iowa |
| 26 | Eleanor E. Higgins | 43 | Wife | — | Iowa |
| 27 | Eleanor M. Higgins | 14 | Daughter | — | Iowa |
| 28 | Kathleen M. Higgins | 12 | Daughter | — | Iowa |
| 29 | Phillip Remes | 52 | Head | Bartender | Iowa |
| 30 | Irene Remes | 40 | Wife | — | Illinois |
| 31 | Howard Remes | 17 | Son | Rip-Saw Helper | Iowa |
| 32 | Eleanor Remes | 16 | Daughter | — | Iowa |
| 33 | Charles Remes | 14 | Son | — | Iowa |
| 34 | Eugene Remes | 11 | Son | — | Iowa |
| 35 | John Clark | 83 | Head | — | Wisconsin |
| 36 | Ella Clark | 76 | Wife | — | Wisconsin |
| 37 | Verna C. Kelly | 51 | Daughter | Teacher | Wisconsin |
| 38 | Lawrence Kelly | 18 | Son | — | Colorado |
| 39 | James Kelly | 16 | Son | — | Colorado |
| 40 | Eugene Parker | 28 | Lodger | Machinist | Iowa |
Pedigree Summary
Melvin
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)