RB
Robert Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Joseph-County, Michigan
Our Model Tree links this Robert Boyd across the 1920, 1930 and 1940 US Censuses in St.-Joseph-County, Michigan (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1913), then head of a 2-person household.
Age 27
b. ~1913
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Joseph-County, Michigan |
| Surname | Boyd |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Mendon Village |
| 1935 Residence (County) | St Joseph |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Mendon Village |
| Est. Birth Year | ~1913 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Harlan Boyd | Head | — | 50 | ~1890 |
| Robert Boyd | Son | — | 27 | ~1913 |
Census Appearances
1920
St Joseph, …
Son, age 7
St Joseph, Michigan · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
St Joseph, …
Son, age 17
St Joseph, Michigan · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Carpenter |
| Industry | House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
St.-Joseph-County, Michigan
Son, age 27
St.-Joseph-County, Michigan · implied b. ~1913 — 2 household members
| Surname | Boyd |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Mendon Village |
| 1935 Residence (County) | St Joseph |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 John Boyd (~0.92 confidence) and father John Boyd (~0.92 confidence) and father Harlan Boyd (~0.92 confidence) and mother Hallie Boyd (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Boyd
b. ~1868
Source father
● Household
· direct · ~0.92
Father
John Boyd
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Harlan Boyd
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Hallie Boyd
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Boyd
Son · 1940 · age 27 · b. ~1913 · Michigan
★ 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 — St.-Joseph-County, Michigan
Open full size
1940 US Federal Census — St.-Joseph-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01817-00329)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lorena Lee | 21 | Wife | Nurse | Michigan |
| 2 | Cecily A Lee | 78 | Mother | — | Michigan |
| 3 | Harlan D Boyd | 50 | Head | — | Michigan |
| 4 | Robert Boyd THIS PERSON | 27 | Son | — | Michigan |
| 5 | Clifford Case | 33 | Head | Carpenter | California |
| 6 | Rolene Case | 32 | Wife | Operator | Michigan |
| 7 | James Case | 13 | Son | — | Michigan |
| 8 | Donna Ray Case | 2 | Daughter | — | Michigan |
| 9 | Leo Spealman | 41 | Head | Janitor | Michigan |
| 10 | Edna Spealman | 32 | Wife | — | Michigan |
| 11 | Charles Dennis | 35 | Head | Teacher | Michigan |
| 12 | Evelyn Dennis | 23 | Wife | — | Michigan |
| 13 | Charles Jr Dennis | 5 | Son | — | Michigan |
| 14 | Homer Mckindley | 46 | Head | Operator | Ohio |
| 15 | Lucille Mckindley | 43 | Wife | — | Michigan |
| 16 | Robert Mckindley | 19 | Son | New Worker | Michigan |
| 17 | Jack Mckindley | 15 | Son | — | Michigan |
| 18 | Homer Jr Mckindley | 13 | Son | — | Ohio |
| 19 | Janis Lou Mckindley | 11 | Daughter | — | Ohio |
| 20 | Linard Royer | 70 | Head | — | Ohio |
| 21 | Rose Royer | 68 | Wife | — | Missouri |
| 22 | Gail J Mckersher | 46 | Head | Salesman | Michigan |
| 23 | Lucille Mckersher | 45 | Wife | — | Michigan |
| 24 | Donald Mckersher | 18 | Son | — | Michigan |
| 25 | Deane Mckersher | 8 | Son | — | Michigan |
| 26 | Henry A Sampsell | 68 | Head | — | Michigan |
| 27 | Hattie Sampsell | 58 | Wife | — | Michigan |
| 28 | Homer M Taylor | 41 | Head | Salesman | Illinois |
| 29 | Emily E Taylor | 40 | Wife | — | Iowa |
| 30 | Howard M Jr Taylor | 12 | Son | — | Illinois |
| 31 | Kenneth R Taylor | 10 | Son | — | Illinois |
| 32 | Clarence Lapeer | 60 | Head | Cook | Michigan |
| 33 | Grace Lapeer | 57 | Wife | — | Wisconsin |
| 34 | Kenneth Lapeer | 18 | Son | — | Wisconsin |
| 35 | Richard Lapeer | 22 | Son | — | Wisconsin |
| 36 | Dorris Lapeer | 26 | Daughter-in-law | — | Michigan |
| 37 | Kirelah Lapeer | 12 | Grand daughter | — | Michigan |
| 38 | Elwin Potter | 40 | Head | Molder | Michigan |
| 39 | Eldora Potter | 30 | Wife | — | Michigan |
| 40 | Hellen Hickerson | 14 | Daughter | — | Michigan |
Pedigree Summary
Robert
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)