JM
John Mcdonald — 1940 US Census Record
Model Tree available1940 United States Federal Census · Macoupin-County, Illinois
Our Model Tree links this John Mcdonald across the 1920, 1930 and 1940 US Censuses in Macoupin-County, Illinois (XGBoost, ~Confirmed), with identified parents Arch — first a head (b.~1900), then head of a 4-person household.
Age 40
b. ~1900
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Macoupin-County, Illinois |
| Surname | McDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Benld Village |
| 1935 Residence (County) | Macoupin |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Boss |
| Industry | Coal Industry |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1980 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same Place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Boss |
| Township / Ward | Benld Village |
| Est. Birth Year | ~1900 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Mcdonald | Head | — | 40 | ~1900 |
| Mary Mcdonald | Other | — | 42 | ~1898 |
| Raymond Mcdonald | Son | — | 16 | ~1924 |
| Verile Mcdonald | Spouse | — | 35 | ~1905 |
Census Appearances
1920
Macoupin, Illinois
Son, age 20
Macoupin, Illinois · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacDonald |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Scotland |
| Year of Immigration | 1907 |
| Naturalization Status | Alien |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
Head, age 30
Macoupin, Illinois · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 23 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | O |
| Home Value / Rent | 1500 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Macoupin-County, Illinois
Head, age 40
Macoupin-County, Illinois · implied b. ~1900 — 4 household members
| Surname | McDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Benld Village |
| 1935 Residence (County) | Macoupin |
| Naturalization Status | Naturalized |
| Occupation | Boss |
| Industry | Coal Industry |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1980 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same Place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 John Mcdonald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arch Macdonald (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arch Macdonald
b. ~1887
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Mcdonald
Head · 1940 · age 40 · b. ~1900 · Illinois
★ 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 — Macoupin-County, Illinois
Open full size
1940 US Federal Census — Macoupin-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00846-00303)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Greystone|Greystone | 28 | Head | Baker | Illinois |
| 42 | Barbara Greystone|Greystone | 24 | Wife | — | Illinois |
| 43 | Patsy Greystone|Greystone | 1 | Daughter | — | Illinois |
| 44 | Lawrence Derance|Derance | 37 | Head | Barber | Italy |
| 45 | Anna Derance|Derance | 38 | Wife | — | Illinois |
| 47 | John Mcdonald THIS PERSON | 40 | Head | Boss | Scotland |
| 48 | Verile Mcdonald | 35 | Wife | — | Illinois |
| 49 | Raymond Mcdonald | 16 | Son | — | Illinois |
| 50 | Mary Mcdonald | 42 | Sister-in-law | School Teacher | Scotland |
| 51 | Louise Burns | 40 | Head | School Teacher | Illinois |
| 52 | Robert Firth | 30 | Head | Manager | Illinois |
| 53 | Palmira Firth | 29 | Wife | — | Illinois |
| 54 | Rita Staley | 37 | Head | Public Work | Illinois |
| 55 | Russel Staley | 9 | Son | — | Illinois |
| 56 | John Day | 66 | Head | Timber Man | Italy |
| 57 | Theresa Day | 64 | Wife | — | Italy |
| 59 | Nick Gazzoli | 56 | Head | Company Work | Italy |
| 60 | Lena Gazzoli | 50 | Wife | — | Italy |
| 61 | Inez Gazzoli | 21 | Daughter | House Work | Illinois |
| 62 | Catherine Gazzoli | 15 | Daughter | — | Illinois |
| 63 | Antonia Gazzoli | 14 | Daughter | — | Illinois |
| 64 | Nick Gazzoli | 9 | Son | — | Illinois |
| 65 | Louis Carney | 32 | Head | Electrician | Illinois |
| 66 | Mary Carney | 29 | Wife | — | Illinois |
| 67 | Ronnie Carney | 5 | Son | — | Illinois |
| 68 | George Dzuricsko | 52 | Head | Company Work | Czechoslovakia |
| 69 | Lisabeth Dzuricsko | 46 | Wife | — | Czechoslovakia |
| 70 | George Dzuricsko | 21 | Son | — | Illinois |
| 71 | John Dzuricsko | 15 | Son | — | Illinois |
| 72 | Lora Daly | 56 | Head | House Work | Illinois |
| 73 | Orlando Daly | 65 | Head | Tripper | Italy |
| 74 | Marcella Daly | 32 | Wife | — | Illinois |
| 75 | Batista Fregnetti | 60 | Head | Tripper | Italy |
| 76 | Grasma Fregnetti | 51 | Wife | — | Italy |
| 77 | John Lukach | 43 | Head | Company Work | Czechoslovakia |
| 78 | John Lukach | 14 | Son | — | Illinois |
| 79 | James Giulicci | 26 | Head | Auto Mech | Illinois |
| 80 | Leana Giulicci | 24 | Wife | — | Illinois |
Related Census Records
Pedigree Summary
John
Gen 1 · 1 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)