TM
Thomas Mcdonald — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Sanborn, South Dakota
Our Model Tree links this Thomas Mcdonald across the 1920, 1930 and 1940 US Censuses in Sanborn, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 4-person household.
Age 30
b. ~1890
Male
Head
Born: Iowa
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Sanborn, South Dakota |
| Surname | McDonald |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Farming |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farming |
| Township / Ward | Letcher Township |
| Est. Birth Year | ~1890 |
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 1920 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Anna Mcdonald | Spouse | — | 26 | ~1894 |
| Thomas Mcdonald | Son | — | 1 | ~1919 |
| Thomas Mcdonald | Head | — | 30 | ~1890 |
| Mary Mcdonald | Daughter | — | ~1920 |
Census Appearances
1920
Sanborn, South …
Head, age 30
Sanborn, South Dakota · implied b. ~1890 — 4 household members
| Surname | McDonald |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Farming |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Sanborn, South …
Head, age 40
Sanborn, South Dakota · implied b. ~1890 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonold |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 23 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Farmer |
| Industry | General Farming |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Sanborn-County, South …
Head, age 50
Sanborn-County, South Dakota · implied b. ~1890 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonell |
| Given Name | Thomas Sr. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Letcher Township |
| 1935 Residence (County) | Sanborn |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| 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 Thomas Mcdonald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Thomas Mcdonald
Head · 1920 · age 30 · b. ~1890 · South Dakota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Sanborn, South Dakota
Open full size
1920 US Federal Census — Sanborn, South Dakota
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1726unit:0510)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George D Hardman | 47 | Head | Farming | Iowa |
| 52 | Irene Hardman | 44 | Wife | — | Missouri |
| 53 | Madge Hardman | 17 | Daughter | — | South Dakota |
| 54 | Lyle Hardman | 14 | Son | — | South Dakota |
| 55 | Daniel Buck | 60 | Head | Farming | Illinois |
| 56 | Andrew Davidson | 24 | Employee | Laborer | Illinois |
| 57 | Hazel Davidson | 19 | Housekeeper | Housekeeper | Illinois |
| 58 | Robert Davidson | 1 | Son | — | South Dakota |
| 59 | John J Feeney | 80 | Head | Farming | Ireland |
| 60 | Eliza A Feeney | 58 | Wife | — | Illinois |
| 61 | Daniel W Feeney | 28 | Son | — | Iowa |
| 62 | John Rohlf | 39 | Head | Farming | Iowa |
| 63 | Clara Rohlf | 39 | Wife | — | Minnesota |
| 64 | Leona Rohlf | 7 | Daughter | — | South Dakota |
| 65 | Olena M Rohlf | 1 | Daughter | — | South Dakota |
| 66 | Thomas Mcdonald THIS PERSON | 30 | Head | Farming | Iowa |
| 67 | Anna M Mcdonald | 26 | Wife | — | Iowa |
| 68 | Thomas Eugene Mcdonald | 1 | Son | — | South Dakota |
| 69 | Mary Elizabeth Mcdonald | 0 | Daughter | — | South Dakota |
| 70 | Charles Kingsbury | 40 | Head | Farming | Illinois |
| 71 | Gladys Irene Kingsbury | 22 | Wife | — | Iowa |
| 72 | Gerald Oral Kingsbury | 0 | Son | — | South Dakota |
| 73 | Henry Christensen | 39 | Head | Farming | Denmark |
| 74 | Anna Christensen | 40 | Wife | — | South Dakota |
| 75 | Ida Christensen | 13 | Daughter | — | South Dakota |
| 76 | Wilbur Christensen | 11 | Son | — | South Dakota |
| 77 | James Christensen | 8 | Son | — | South Dakota |
| 78 | Elsie Christensen | 7 | Daughter | — | South Dakota |
| 79 | George Christensen | 5 | Son | — | South Dakota |
| 80 | Leonard Christensen | 1 | Son | — | South Dakota |
| 81 | Edward Hays | 47 | Head | Farming | Illinois |
| 82 | Pauline Hays | 39 | Wife | — | Illinois |
| 83 | Edward Hays | 9 | Son | — | Illinois |
| 84 | Paul Hays | 6 | Son | — | South Dakota |
| 85 | Carl Hays | 4 | Son | — | South Dakota |
| 86 | Ross Hamilton | 36 | Head | Farming | Illinois |
| 87 | Elsie Hamilton | 31 | Wife | — | Iowa |
| 88 | Marceline Hamilton | 9 | Daughter | — | South Dakota |
| 89 | William R Hamilton | 1 | Son | — | South Dakota |
| 90 | John Hamilton | 72 | Head | Farming | Illinois |
| 91 | Fred Carter | 47 | Head | Farming | Iowa |
| 92 | Bertha D Carter | 35 | Wife | — | South Dakota |
| 93 | Norman D Carter | 2 | Son | — | South Dakota |
| 94 | Gustave Denaert | 53 | Head | Farming | Belgium |
| 95 | Mary Denaert | 52 | Wife | — | Belgium |
| 96 | Gustaf Denaert | 20 | Son | — | Iowa |
| 97 | Clotilda Denaert | 19 | Daughter | — | Iowa |
| 98 | Johnnie Denaert | 15 | Son | — | Iowa |
| 99 | Nellie Denaert | 13 | Daughter | — | Iowa |
| 100 | Albert Denaert | 7 | Son | — | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)