JM
John Murdock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this John Murdock across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1900), then head of a 6-person household.
Age 40
b. ~1900
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Murdock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit city |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | Machinist |
| Industry | Automobile factory |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1260 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Machinist |
| Township / Ward | Detroit City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Jack Murdock | Son | — | 8 | ~1932 |
| Shirley Murdock | Daughter | — | 7 | ~1933 |
| Albert Murdock | Son | — | 12 | ~1928 |
| Charles Murdock | Son | — | 2 | ~1938 |
| John Murdock | Head | — | 40 | ~1900 |
| Florence Murdock | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Wayne, Michigan
Other, age 29
Wayne, Michigan · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murdock |
| Given Name | John |
| Relationship to Head | Son-in-law |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 24 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Chauffeur |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Head, age 40
Wayne-County, Michigan · implied b. ~1900 — 6 household members
| Surname | Murdock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit city |
| 1935 Residence (County) | Wayne |
| Occupation | Machinist |
| Industry | Automobile factory |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1260 |
| Highest Grade | H 2 |
| 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 Murdock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Murdock
Head · 1940 · age 40 · b. ~1900 · Michigan
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01859-00092)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Sylvester | 65 | Head | — | Michigan |
| 2 | Bertha Sylvester | 63 | Wife | — | Michigan |
| 3 | Evelyn Sylvester | 42 | Daughter | Telephone Operator | Michigan |
| 4 | Norman Sylvester | 37 | Son | Manager | Michigan |
| 5 | Hannah Sylvester | 77 | Sister | — | Michigan |
| 6 | John Murdock THIS PERSON | 40 | Head | Machinist | Michigan |
| 7 | Florence Murdock | 37 | Wife | — | Michigan |
| 8 | Albert Murdock | 12 | Son | — | Michigan |
| 9 | Jack Murdock | 8 | Son | — | Michigan |
| 10 | Shirley Murdock | 7 | Daughter | — | Michigan |
| 11 | Charles Murdock | 2 | Son | — | Michigan |
| 12 | George Farwell | 51 | Head | Mechanic | England |
| 13 | Elizabeth Farwell | 50 | Wife | — | England |
| 14 | Edwin Farwell | 27 | Son | Clerk | New York |
| 15 | Norman Farwell | 19 | Son | Cutter | Michigan |
| 16 | Stanley Farwell | 17 | Son | New Stocker | Michigan |
| 17 | John Knight | 36 | Head | Car Loader | England |
| 18 | Irene Knight | 31 | Wife | — | Canada English |
| 19 | Mary P. Knight | 5 | Daughter | — | Michigan |
| 20 | John S. Knight | 4 | Son | — | Michigan |
| 21 | Tracy Michael Knight | 62 | Uncle | — | Canada English |
| 22 | Anna Ruffless | 58 | Head | — | Michigan |
| 23 | William Kelly | 57 | Head | Glazier | Michigan |
| 24 | Mary Kelly | 50 | Wife | Marker | Michigan |
| 25 | John Tubbs | 40 | Head | Elevator Operator | Pennsylvania |
| 26 | Myrna Tubbs | 33 | Wife | — | Michigan |
| 27 | Margaret Tubbs | 2 | Daughter | — | Michigan |
| 28 | Mildred Raible | 23 | Head | Punch Press Operator | Michigan |
| 29 | Mary Lou Raible | 1 | Daughter | — | Michigan |
| 30 | John Waldrop | 25 | Lodger | Mechanic | Georgia |
| 31 | Marie Waldrop | 19 | Lodger | — | Michigan |
| 32 | Patricia Waldrop | 1 | Lodger | — | Michigan |
| 33 | Extra Line | None | — | — | — |
| 34 | Charles Casper | 25 | Head | Laborer | Oklahoma |
| 35 | Eleanor Casper | 23 | Wife | — | Ohio |
| 36 | Wayne Casper | 2 | Son | — | Michigan |
| 37 | John Nowak | 38 | Head | Assembler | Michigan |
| 38 | Gladys Nowak | 36 | Wife | — | Michigan |
| 39 | Rosalie Ritzler | 25 | Sister in law | Candler | Michigan |
| 40 | John Murphy | 41 | Head | Brakeman | Illinois |
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)