RM
Robert Mcdonald — 1940 US Census Record
Model Tree available1940 United States Federal Census · Buchanan-County, Missouri
Our Model Tree links this Robert Mcdonald across the 1920, 1930 and 1940 US Censuses in Buchanan-County, Missouri (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1904), then head of a 4-person household.
Age 36
b. ~1904
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Buchanan-County, Missouri |
| Surname | McDonald |
| Given Name | Robert G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Joseph city |
| 1935 Residence (County) | Buchanan |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | St Joseph City |
| Est. Birth Year | ~1904 |
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 |
|---|---|---|---|---|
| William Mcdonald | Head | — | 81 | ~1859 |
| Hera Mcdonald | Other | — | — | |
| Robert Mcdonald | Son | — | 36 | ~1904 |
| Margaret Mcdonald | Spouse | — | 73 | ~1867 |
Census Appearances
1920
Buchanan, Missouri
Son, age 16
Buchanan, Missouri · implied b. ~1904 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Robert J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Buchanan, Missouri
Son, age 26
Buchanan, Missouri · implied b. ~1904 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonal |
| Given Name | Robert C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Iowa |
| Occupation | Salesman |
| Industry | Beauty Supply |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Buchanan-County, Missouri
Son, age 36
Buchanan-County, Missouri · implied b. ~1904 — 4 household members
| Surname | McDonald |
| Given Name | Robert G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Joseph city |
| 1935 Residence (County) | Buchanan |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Mcdonald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Mcdonald (~0.92 confidence) and father William Mcdonald (~0.55 confidence) and father William Mcdonald (~0.92 confidence) and mother Margaret Mcdonald (~0.92 confidence) and mother Margaret Mcdonald (~0.55 confidence) and mother Margaret Mcdonald (~0.92 confidence) and father Norman Mcdonal (~0.60 confidence) and mother Marguerite Mcdonal (~0.60 confidence). The pedigree spans 2 generations with 8 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.75
Father
William Mcdonald
b. ~1859
Source father
● Household
· direct · ~0.92
Father
William Mcdonald
b. ~1860
Source father>father
● Household
· direct · ~0.55
Father
William Mcdonald
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Margaret Mcdonald
b. ~1863
Source mother
● Household
· direct · ~0.92
Mother
Margaret Mcdonald
b. ~1863
Source father>mother
● Household
· direct · ~0.55
Mother
Margaret Mcdonald
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
Norman Mcdonal
b. ~1893
Source father
● Household
· direct · ~0.6
Mother
Marguerite Mcdonal
b. ~1899
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Robert Mcdonald
Son · 1940 · age 36 · b. ~1904 · Missouri
★ 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 — Buchanan-County, Missouri
Open full size
1940 US Federal Census — Buchanan-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02088-00247)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Earl Lockwood | 25 | Head | Distributor | Missouri |
| 42 | Arlene Lockwood | 24 | Wife | Presser | Missouri |
| 43 | Mildred Tilson | 40 | Head | Indexer | Nebraska |
| 44 | Emery Jr. Tilson | 19 | Son | Salesman | Missouri |
| 45 | Hattie Carter | 63 | Head | — | Iowa |
| 46 | Raymond Courtright | 35 | Head | Laborer | Nebraska |
| 47 | Sara Courtright | 31 | Wife | Operator | Kansas |
| 48 | Ramona Courtright | 13 | Daughter | — | Kansas |
| 49 | Carol Courtright | 6 | Daughter | — | Missouri |
| 50 | Harold Gray | 18 | Head | Waiter | Missouri |
| 51 | Joan Gray | 19 | Wife | — | Missouri |
| 52 | Eugene Bowen | 31 | Head | Salesman | Missouri |
| 53 | Bessie Bowen | 37 | Wife | — | Kansas |
| 54 | Thomas E. Bowen | 2 | Son | — | Missouri |
| 55 | Agnes Baker | 28 | Head | Saleslady | Missouri |
| 56 | Leslie Yeager | 22 | Head | Truck Driver | Missouri |
| 57 | Ruth Yeager | 18 | Wife | — | Kansas |
| 58 | Gertrude Meisner | 49 | Head | Piece Worker | Missouri |
| 59 | Paul Herren | 24 | Head | Truck Driver | Missouri |
| 60 | Goldie Herren | 18 | Wife | Maid | Kansas |
| 61 | Saddle Sell | 41 | Head | Cook | Missouri |
| 62 | Vernell Sell | 17 | Daughter | — | Missouri |
| 63 | Mary Alice Sell | 15 | Daughter | — | Missouri |
| 64 | William Goodwin | 26 | Head | Truck Driver | Missouri |
| 65 | Beverly Goodwin | 22 | Wife | — | Missouri |
| 66 | William Jr. Goodwin | 3 | Son | — | Missouri |
| 67 | Betty Goodwin | 2 | Daughter | — | Missouri |
| 68 | Leslie C. Tilson | 69 | Head | Owner | Missouri |
| 69 | Hera Tilson | None | Block | — | — |
| 70 | Milton G. Tostle | 68 | Head | Official | Missouri |
| 71 | Charlotte King | 36 | Maid | Maid | Missouri |
| 72 | Virgil Vaughan | 31 | Chauffeur | Chauffeur | Missouri |
| 73 | William Sutton | 52 | Head | Gardner | Nebraska |
| 74 | Genevieve Sutton | 28 | Wife | — | Missouri |
| 75 | Patricia Sutton | 3 | Daughter | — | Missouri |
| 76 | H. Lee Riley | 76 | Lodger | — | Missouri |
| 77 | William Mcdonald | 81 | Head | Official | Pennsylvania |
| 78 | Margaret Mcdonald | 73 | Wife | — | Iowa |
| 79 | Robert G. Mcdonald THIS PERSON | 36 | Son | — | Missouri |
| 80 | Hera Mcdonald | None | Block | — | — |
Pedigree Summary
Robert
Gen 1 · 6 parents
~0.81
Gen 2 · 2 grandparents
~0.55
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)