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James Mcdonald — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this James Mcdonald across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1908), then head of a 11-person household.
Age 22
b. ~1908
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | McDonald |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | dispatcher |
| Industry | Rapid Transit |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Dispatcher |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1908 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Ethel Mcdonald | Daughter | — | 27 | ~1903 |
| Anna Mcdonald | Daughter | — | 20 | ~1910 |
| Mae Mcdonald | Daughter | — | 29 | ~1901 |
| Loretta Mcdonald | Daughter | — | 24 | ~1906 |
| Eugene Mcdonald | Daughter | — | 17 | ~1913 |
| Anthony Mcdonald | Head | — | 56 | ~1874 |
| James Mcdonald | Son | — | 22 | ~1908 |
| Leroy Mcdonald | Son | — | 19 | ~1911 |
| Anthony Mcdonald | Son | — | 25 | ~1905 |
| Redmond Mcdonald | Son | — | 28 | ~1902 |
| Bridget Mcdonald | Spouse | — | 54 | ~1876 |
Census Appearances
1930
Cook, Illinois
Son, age 22
Cook, Illinois · implied b. ~1908 — 11 household members
| Surname | McDonald |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | dispatcher |
| Industry | Rapid Transit |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 33
Cook-County, Illinois · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonall |
| Given Name | James |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (County) | Cook |
| Occupation | Same place |
| Industry | 48 |
| Class of Worker | policeman |
| Highest Grade | H-1 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 James Mcdonald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mcdonald
Son · 1930 · age 22 · b. ~1908 · Illinois
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Sibling
Loretta Mcdonald
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Mcdonald
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Mcdonald
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Mcdonald
Sibling · 1930 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anthony Mcdonald
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leroy Mcdonald
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mae Mcdonald
Sibling · 1930 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Redmond Mcdonald
Sibling · 1930 · age 28
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
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:illinoiscensus00reel459:0803)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin Wagner | 11 | Son | None | Illinois |
| 2 | Ben Friedman | 42 | Head | Owner | Russia |
| 3 | Jennie Friedman | 39 | Wife | None | New York |
| 4 | Bernard Friedman | 20 | Son | None | Illinois |
| 5 | Milton A. Friedman | 15 | Son | None | Illinois |
| 6 | Nathan Friedman | 13 | Son | None | Illinois |
| 7 | Martin Friedman | 6 | Son | None | Illinois |
| 8 | James M. Ross | 29 | Head | Pres Boiler | Wisconsin |
| 9 | Josephine R. Ross | 29 | Wife | None | Irish Free State |
| 10 | Samuel Moskovitz | 55 | Head | Peddler | Latvia |
| 11 | Bessie Moskovitz | 50 | Wife | None | Russia |
| 12 | Samuel J. Hoffman | 26 | Step-son | Doctor | Latvia |
| 13 | Sol A. Hoffman | 25 | Step-son | Partner | Illinois |
| 14 | Charles Schwartz | 51 | Head | Owner | Lithuania |
| 15 | Lena Schwartz | 48 | Wife | None | Lithuania |
| 16 | Samuel B. Schwartz | 27 | Son | Salesman | Lithuania |
| 17 | Bess Schwartz | 22 | Daughter | None | Illinois |
| 18 | Harold W. Schwartz | 20 | Son | Assistant Purchaser | Illinois |
| 19 | Edward Schwartz | 16 | Son | None | Illinois |
| 20 | Jack Schwartz | 16 | Son | None | Illinois |
| 21 | Rivian R. Schwartz | 9 | Daughter | None | Illinois |
| 22 | Abr. S. Charm | 48 | Head | Owner | Russia |
| 23 | Marion S. Charm | 38 | Wife | Bookkeeper | Illinois |
| 24 | Gazella Charm | 16 | Daughter | None | Illinois |
| 25 | Hortense Charm | 15 | Daughter | None | Illinois |
| 26 | Leah Charm | 12 | Daughter | None | Illinois |
| 27 | Hattie D. Dobbins | 42 | Servant | Servant | Tennessee |
| 28 | Anthony Mcdonald | 56 | Head | Fireman | Irish Free State |
| 29 | Bridget Mcdonald | 54 | Wife | None | Irish Free State |
| 30 | Mae Mcdonald | 29 | Daughter | Stenographer | Illinois |
| 31 | Redmond Mcdonald | 28 | Son | Electrician | Illinois |
| 32 | Ethel Mcdonald | 27 | Daughter | None | Illinois |
| 33 | Anthony Jr. Mcdonald | 25 | Son | Driver | Illinois |
| 34 | Loretta Mcdonald | 24 | Daughter | Teacher | Illinois |
| 35 | James Mcdonald THIS PERSON | 22 | Son | Dispatcher | Illinois |
| 36 | Anna Mcdonald | 20 | Daughter | None | Illinois |
| 37 | Leroy Mcdonald | 19 | Son | None | Illinois |
| 38 | Eugene Mcdonald | 17 | Daughter | None | Illinois |
| 39 | Hugo Engelhardt | 46 | Head | None | Poland |
| 40 | Sydney J. Engelhardt | 20 | Son | Shipping Clerk | Illinois |
| 41 | Sylvia Engelhardt | 22 | Daughter | Stenographer | Illinois |
| 42 | Eli Natovich | 50 | Lodger | Salesman | Poland |
| 43 | Jacob O. Maremont | 52 | Head | None | Poland |
| 44 | Anna Maremont | 48 | Wife | None | Poland |
| 45 | Bernice L. Smith | 45 | Daughter | None | Poland |
| 46 | Gilbert M. Smith | 20 | Grandson | Salesman | Illinois |
| 47 | William Isenberg | 50 | Boarder | Cutter | Poland |
| 48 | Edward E. O'Keefe | 50 | Head | Sergeant | Irish Free State |
| 49 | Anna O'Keefe | 48 | Wife | None | Irish Free State |
| 50 | Sarah Bower | 60 | Head | None | Russia |
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)