JM
John Mcdonnell — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Wayne, Michigan
Our Model Tree links this John Mcdonnell across the 1930 and 1940 US Censuses in Wayne, Michigan (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 5-person household.
Age 40
b. ~1890
Male
Head
Born: Michigan
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Wayne, Michigan |
| Surname | McDonnell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Michigan |
| Additional Details | |
| Occupation | Accountant |
| Industry | Building Mfg |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| Radio Set | R |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Accountant |
| Township / Ward | Detroit City |
| 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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Lucy Mcdonnell | Spouse | — | 33 | ~1897 |
| John Mcdonnell | Son | — | 3 | ~1927 |
| Helen Mcdonnell | Other | — | 30 | ~1900 |
| Margaret Mcdonnell | Daughter | — | 8 | ~1922 |
| John Mcdonnell | Head | — | 40 | ~1890 |
Census Appearances
1930
Wayne, Michigan
Head, age 40
Wayne, Michigan · implied b. ~1890 — 5 household members
| Surname | McDonnell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Michigan |
| Occupation | Accountant |
| Industry | Building Mfg |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| Radio Set | R |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Head, age 50
Wayne-County, Michigan · implied b. ~1890 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Dearborn City |
| 1935 Residence (County) | Wayne |
| Occupation | Bookkeeping |
| Industry | Motor Sales |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2200 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Mcdonnell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mcdonnell
Head · 1930 · age 40 · b. ~1890 · Michigan
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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 — Wayne, Michigan
Open full size
1930 US Federal Census — Wayne, Michigan
Page Contents
22 people indexed on this census page (ia:1930:michigancensus00reel1055:0307)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ray E Van Maele | 31 | Head | Engineer | Michigan |
| 2 | Mary Van Maele | 31 | Wife | — | Michigan |
| 3 | Mary Lou Van Maele | 4 | Daughter | — | Michigan |
| 4 | Raymond Van Maele | 2 | Son | — | Michigan |
| 5 | Margaret Van Maele | 0 | Daughter | — | Michigan |
| 6 | John Mcdonnell THIS PERSON | 40 | Head | Accountant | Michigan |
| 7 | Lucy M Mcdonnell | 33 | Wife | — | Michigan |
| 8 | Margaret M Mcdonnell | 8 | Daughter | — | Michigan |
| 9 | John J Mcdonnell | 3 | Son | — | Michigan |
| 10 | Helen Mcdonnell | 30 | Sister | Teacher | Michigan |
| 11 | Michael Erma | 40 | Head | Buyer | Michigan |
| 12 | Marie Erma | 39 | Wife | — | Jugoslavia |
| 13 | Robert J Erma | 18 | Son | — | Michigan |
| 14 | Richard Erma | 12 | Son | — | Michigan |
| 15 | Alice Baker | 65 | Mother-in-law | Laborer | Jugoslavia |
| 16 | Earl H Wiley | 35 | Head | Broker | Michigan |
| 17 | Grace Wiley | 28 | Wife | — | Canada English |
| 18 | Edith Oyrick | 21 | Servant | Servant | Poland |
| 19 | Claude Cook | 25 | Head | Salesman | Michigan |
| 20 | Jane Cook | 23 | Wife | — | Michigan |
| 21 | John Peterson | 34 | Head | Engineer | Michigan |
| 22 | Margaret Peterson | 32 | Wife | — | Canada French |
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)