WM
William Macdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this William Macdonald across the 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | MacDonald |
| Given Name | William K |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1925 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Donald Macdonald | Son | — | 12 | ~1928 |
| Helen Macdonald | Spouse | — | 35 | ~1905 |
| Gerald Macdonald | Son | — | 5 | ~1935 |
| William Macdonald | Son | — | 15 | ~1925 |
| David Macdonald | Son | — | 7 | ~1933 |
| Shirley Macdonald | Daughter | — | 13 | ~1927 |
| Sharon Macdonald | Daughter | — | 9 | ~1931 |
| Walter Macdonald | Head | — | 35 | ~1905 |
| Dennis Macdonald | Son | — | ~1940 |
Census Appearances
1930
Marion, Indiana
Son, age 5
Marion, Indiana · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mac Donald |
| Given Name | William K. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Son, age 15
Marion-County, Indiana · implied b. ~1925 — 9 household members
| Surname | MacDonald |
| Given Name | William K |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 William Macdonald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Macdonald
Son · 1940 · age 15 · b. ~1925 · Indiana
★ You are viewing this record
Sibling
Sharon Macdonald
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dennis Macdonald
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Macdonald
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Macdonald
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Macdonald
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Macdonald
Sibling · 1940 · age 12
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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01122-00019)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 42 | Eugene H Weyreter | 32 | Head | Manager Auto Parts | Indiana |
| 43 | Mildred O Weyreter | 31 | Wife | — | Indiana |
| 44 | Jeannette M Weyreter | 11 | Daughter | — | Indiana |
| 45 | John J Weyreter | 8 | Son | — | Indiana |
| 46 | Clarence T Phelps | 31 | Head | Knitter | Kentucky |
| 47 | Mildred E Phelps | 30 | Wife | — | Indiana |
| 48 | Jack Richard Phelps | 8 | Son | — | Indiana |
| 49 | Daniel Gene Phelps | 5 | Son | — | Indiana |
| 50 | Judith Ann Phelps | 3 | Daughter | — | Indiana |
| 52 | Charles H Mcknight | 32 | Head | Electrician | Missouri |
| 53 | Jessie M Mcknight | 31 | Wife | — | Mississippi |
| 54 | Charles H Jr Mcknight | 9 | Son | — | Indiana |
| 55 | James Mcknight | 1 | Son | — | Indiana |
| 56 | Oscar O Mayhew | 50 | Head | Painter & Auto Mechanic | Indiana |
| 57 | Mabel I Mayhew | 36 | Wife | Pairer | Indiana |
| 58 | George Weimer | 67 | Head | Baker | Indiana |
| 59 | Margaret A Weimer | 65 | Wife | — | Indiana |
| 60 | Walter K Macdonald | 35 | Head | Tile Setter | Indiana |
| 61 | Helen A Macdonald | 35 | Wife | — | Indiana |
| 62 | William K Macdonald THIS PERSON | 15 | Son | — | Indiana |
| 63 | Shirley May Macdonald | 13 | Daughter | — | Indiana |
| 64 | Donald Wayne Macdonald | 12 | Son | — | Indiana |
| 65 | Sharon Marie Macdonald | 9 | Daughter | — | Indiana |
| 66 | David Clark Macdonald | 7 | Son | — | Indiana |
| 67 | Gerald Eugene Macdonald | 5 | Son | — | Indiana |
| 68 | Dennis Lee Macdonald | 0 | Son | — | Indiana |
| 69 | Charles Denges | 53 | Head | Salesman | Indiana |
| 70 | Clara B Denges | 47 | Wife | — | Indiana |
| 71 | Charles L Pope | 30 | Head | Rusher | Indiana |
| 72 | Thelma V Pope | 30 | Wife | — | Indiana |
| 73 | Robert Earl Pope | 12 | Son | — | Indiana |
| 74 | June Marie Pope | 8 | Daughter | — | Indiana |
| 75 | Charles Arthur Pope | 5 | Son | — | Indiana |
| 76 | James Dale Pope | 3 | Son | — | Indiana |
| 78 | Roscoe O Smith | 39 | Head | Bookkeeper | Illinois |
| 79 | Kathryn L Smith | 39 | Wife | — | Indiana |
| 80 | Robert B Smith | 11 | Son | — | Indiana |
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)