RB
Robert Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Decatur-County, Iowa
Our Model Tree links this Robert Boyd across the 1920, 1930 and 1940 US Censuses in Decatur-County, Iowa (XGBoost, ~Confirmed), with identified parents Curtis & Susie — first a head (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Decatur-County, Iowa |
| Surname | Boyd |
| Given Name | Robert C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Grand River Township |
| 1935 Residence (County) | Decatur County |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 63 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Grand River Township |
| Est. Birth Year | ~1918 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Sandra Boyd | Daughter | — | 2 | ~1938 |
| Robert Boyd | Head | — | 22 | ~1918 |
| Jan Boyd | Son | — | 3 | ~1937 |
| Alice Boyd | Spouse | — | 22 | ~1918 |
Census Appearances
1920
Decatur, Iowa
Son, age 2
Decatur, Iowa · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Decatur, Iowa
Son, age 12
Decatur, Iowa · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Robert C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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
Decatur-County, Iowa
Head, age 22
Decatur-County, Iowa · implied b. ~1918 — 4 household members
| Surname | Boyd |
| Given Name | Robert C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Grand River Township |
| 1935 Residence (County) | Decatur County |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 63 |
| 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 Robert Boyd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Curtis Boyd (~0.92 confidence) and mother Susie Boyd (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Curtis Boyd
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Susie Boyd
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Boyd
Head · 1940 · age 22 · b. ~1918 · 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 — Decatur-County, Iowa
Open full size
1940 US Federal Census — Decatur-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01154-00537)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert C. Boyd THIS PERSON | 22 | Head | Farmer | Iowa |
| 42 | Alice V. Boyd | 22 | Wife | — | Missouri |
| 43 | Jan C. Boyd | 3 | Son | — | — |
| 44 | Sandra A. Boyd | 2 | Daughter | — | — |
| 45 | Carl R. Moore | 40 | Head | Farmer | Indiana |
| 46 | Bertha M. Moore | 35 | Wife | — | Kentucky |
| 47 | William D. Moore | 16 | Son | Laborer | Iowa |
| 48 | Leslie Moore | 12 | Son | — | Iowa |
| 49 | Betty M. Moore | 9 | Daughter | — | Iowa |
| 50 | Reba M. Moore | 6 | Daughter | — | — |
| 51 | Nancy C. Moore | 4 | Daughter | — | — |
| 52 | Shirley J. Moore | 2 | Daughter | — | — |
| 53 | Henry M. Akers | 53 | Head | Farmer | Iowa |
| 54 | Ruth Akers | 44 | Wife | — | Iowa |
| 55 | Ben Hadden | 49 | Head | Farmer | Missouri |
| 56 | Clara Hadden | 36 | Wife | — | Missouri |
| 57 | Lorenn Hadden | 17 | Daughter | — | Nebraska |
| 58 | Wanda Hadden | 15 | Daughter | — | Nebraska |
| 59 | Everett Hadden | 6 | Son | — | — |
| 60 | Maxine Hadden | 2 | Daughter | — | — |
| 61 | Frank Bryant | 65 | Head | Farmer | Iowa |
| 62 | Blanch Bryant | 63 | Wife | — | Iowa |
| 63 | Raymond C. Bryant | 30 | Son | Laborer | Iowa |
| 64 | Floyd Mcdowell | 32 | Head | Farmer | Iowa |
| 65 | Gretchen Mcdowell | 28 | Wife | — | Iowa |
| 66 | Raydean Mcdowell | 10 | Son | — | Iowa |
| 67 | Bobby J. Mcdowell | 8 | Son | — | Iowa |
| 68 | Connie E. Mcdowell | 7 | Son | — | Iowa |
| 69 | Colleen J. Mcdowell | 5 | Daughter | — | — |
| 70 | Gary G. Mcdowell | 3 | Son | — | — |
| 71 | Orville J. Mcdowell | 2 | Son | — | — |
| 72 | Paul Gibson | 32 | Head | Farmer | Iowa |
| 73 | Anna Gibson | 29 | Wife | — | Iowa |
| 74 | Kenneth Gibson | 11 | Son | — | Iowa |
| 75 | Edith Gibson | 9 | Daughter | — | Iowa |
| 76 | Eloyze Gibson | 6 | Daughter | — | Iowa |
| 77 | Delores Gibson | 4 | Daughter | — | — |
| 78 | Bonnie Gibson | 2 | Daughter | — | — |
| 79 | Audrey Gibson | 0 | Daughter | — | — |
Pedigree Summary
Robert
Gen 1 · 2 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)