WM
William Mcdonald — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this William Mcdonald across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 5-person household.
Age 51
b. ~1879
Male
Head
Born: Scotland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | McDonald |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 32 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Watchman |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Watchman |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1879 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Annie Mcdonald | Daughter | — | 7 | ~1923 |
| William Mcdonald | Head | — | 51 | ~1879 |
| Elizabeth Mcdonald | Other | — | 41 | ~1889 |
| Hugh Mcdonald | Son | — | 13 | ~1917 |
| William Mcdonald | Son | — | 15 | ~1915 |
Census Appearances
1920
Cook, Illinois
Head, age 42
Cook, Illinois · implied b. ~1878 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacDonald |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Un |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Consulting Engr. |
| Industry | Efficiency |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Cook, Illinois
Head, age 51
Cook, Illinois · implied b. ~1879 — 5 household members
| Surname | McDonald |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 32 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Watchman |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Cook-County, Illinois
Head, age 61
Cook-County, Illinois · implied b. ~1879
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | MacDonald |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Watchman |
| Industry | Auto Garage |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 1170 |
| Highest Grade | S 7 |
| 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 William 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
William Mcdonald
Head · 1930 · age 51 · b. ~1879 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel443:0779)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Emma Lemon | 74 | Wife-H | — | Illinois |
| 52 | Charles Downey | 65 | Grandfather | Stationary Engineer | New York |
| 53 | Edwin Piary | 45 | Boarder | Brickhandler | Illinois |
| 54 | Edward Farelough | 32 | Head | Chauffeur | Illinois |
| 55 | Sarah G. Farelough | 32 | Wife-H | — | Illinois |
| 56 | Edward Farelough | 11 | Son | — | Illinois |
| 57 | Robert Farelough | 7 | Son | — | Illinois |
| 58 | Richard Farelough | 5 | Son | — | Illinois |
| 59 | William Hatchman | 46 | Head | Pattern Maker | Missouri |
| 60 | Effie L. Hatchman | 42 | Wife-H | — | Missouri |
| 61 | Harriet Hatchman | 19 | Daughter | Stenographer | Missouri |
| 62 | William Hatchman | 17 | Son | Bookkeeper | Missouri |
| 63 | Anna M. Hatchman | 15 | Daughter | — | Missouri |
| 64 | Leathel Hatchman | 13 | Daughter | — | Missouri |
| 65 | Robert Hatchman | 11 | Son | — | Missouri |
| 66 | Marcella Hatchman | 2 | Daughter | — | Missouri |
| 67 | James J. Rainey | 43 | Head | Stock Room Clerk | Ohio |
| 68 | Clara G. Rainey | 42 | Wife-H | — | New York |
| 69 | Frederick L. Rainey | 17 | Son | Lithographer | New York |
| 70 | Oscar F. Nelson | 34 | Head | Operator | Wisconsin |
| 71 | Harriet Nelson | 32 | Wife-H | — | New York |
| 72 | Dorothy Nelson | 13 | Daughter | — | New York |
| 73 | Catherine Walther | 57 | Head | Teacher | Illinois |
| 74 | Louise Walther | 53 | Sister | Proprietor | Illinois |
| 75 | Nora Pish | 61 | Servant | Housekeeper | Michigan |
| 76 | George H. Spring | 45 | Head | Truck Driver | Michigan |
| 77 | Ida Spring | 35 | Wife-H | — | Scotland |
| 78 | Lillian Baumann | 46 | Sister | Stamping Clerk | Wisconsin |
| 79 | James Burns | 45 | Head | Stationary Fireman | Illinois |
| 80 | Margaret Burns | 35 | Wife-H | — | Indiana |
| 81 | Mabel Burns | 19 | Son | Passenger Clerk | Illinois |
| 82 | Margaret Burns | 17 | Daughter | Saleswoman | Illinois |
| 83 | John W. Runyon | 58 | Head | Painter | Michigan |
| 84 | Margaret Runyon | 51 | Wife-H | — | England |
| 85 | Agnes Ballantine | 63 | Head | Proprietor | Illinois |
| 86 | Mary Dough | 64 | Sister | — | Pennsylvania |
| 87 | William Mcdonald THIS PERSON | 51 | Head | Watchman | Scotland |
| 88 | Elizabeth G. Mcdonald | 41 | Wife-H | — | Scotland |
| 89 | William Mcdonald | 15 | Son | Messenger Clerk | Illinois |
| 90 | Hugh S. Mcdonald | 13 | Son | Bookkeeper | Illinois |
| 91 | Annie S. Mcdonald | 7 | Daughter | — | Illinois |
| 92 | John A. Johnson | 52 | Head | Carpenter | Sweden |
| 93 | Lawrence R. Johnson | 26 | Son | — | Illinois |
| 94 | Stanley B. Johnson | 21 | Son | Carpenter Apprentice | Illinois |
| 95 | Victor A. Johnson | 59 | Brother | Carpenter | Sweden |
| 96 | Axel W. Ljungquist | 51 | Lodger | Carpenter | Sweden |
| 97 | Cella Mohr | 48 | Head | — | Illinois |
| 98 | Mabel Mohr | 22 | Daughter | File Clerk | Illinois |
| 99 | Florence Mohr | 21 | Daughter | — | Illinois |
| 100 | Virginia Mohr | 15 | Daughter | File Clerk | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)