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Robert Gray — 1940 US Census Record
Model Tree available1940 United States Federal Census · Houghton-County, Michigan
Our Model Tree links this Robert Gray across the 1920, 1930 and 1940 US Censuses in Houghton-County, Michigan (XGBoost, ~Confirmed), with identified parents Fred & Anna — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Houghton-County, Michigan |
| Surname | Gray |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | HANCOCK |
| 1935 Residence (County) | HOUGHTON |
| Additional Details | |
| Occupation | Gas-Station Manager |
| Industry | Retail Gasoline Sales |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 1444 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Gas-Station Manager |
| Township / Ward | Hancock |
| Est. Birth Year | ~1917 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Anna Gray | Daughter | — | 21 | ~1919 |
| Jewel Gray | Daughter | — | 25 | ~1915 |
| Fred Gray | Head | — | 60 | ~1880 |
| Robert Gray | Son | — | 23 | ~1917 |
Census Appearances
1920
Houghton, Michigan
Son, age 2
Houghton, Michigan · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gray |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Houghton, Michigan
Son, age 12
Houghton, Michigan · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gray |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Houghton-County, Michigan
Son, age 23
Houghton-County, Michigan · implied b. ~1917 — 4 household members
| Surname | Gray |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | HANCOCK |
| 1935 Residence (County) | HOUGHTON |
| Occupation | Gas-Station Manager |
| Industry | Retail Gasoline Sales |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 1444 |
| Highest Grade | H 4 |
| 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 Robert Gray across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Gray (~0.92 confidence) and mother Anna Gray (~0.92 confidence) and mother Annie Gray (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Gray
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Anna Gray
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Annie Gray
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Gray
Son · 1940 · age 23 · b. ~1917 · Michigan
★ You are viewing this record
Sibling
Anna Gray
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jewel Gray
Sibling · 1940 · age 25
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
1940 US Federal Census — Houghton-County, Michigan
Open full size
1940 US Federal Census — Houghton-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01757-00127)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bertha E. Mcdonald | 52 | Wife | — | Michigan |
| 2 | John H. Pahlkainen | 47 | Head | Salesman | Michigan |
| 3 | Helma Pahlkainen | 48 | Wife | — | Michigan |
| 4 | Robert Pahlkainen | 24 | Son | Delivery Man | Michigan |
| 5 | Shirley Pahlkainen | 17 | Daughter | — | Michigan |
| 6 | Barbara Pahlkainen | 14 | Daughter | — | Michigan |
| 7 | Joyce Turner | 17 | Lodger | — | Michigan |
| 8 | Anna Williamson | 52 | Head | Merchant | Michigan |
| 9 | Phillip J. Williamson | 16 | Son | — | Iowa |
| 10 | Elza M. Opie | 53 | Head | City-Treasurer | Michigan |
| 11 | Howard K. Opie | 23 | Son | Salesman | Michigan |
| 12 | Fred J. Gray | 60 | Head | Stationary Fireman | Wisconsin |
| 13 | Jewel Gray | 25 | Daughter | Bookkeeper + Ticket Seller | Michigan |
| 14 | Robert Gray THIS PERSON | 23 | Son | Gas-Station Manager | Michigan |
| 15 | Anna Gray | 21 | Daughter | — | Michigan |
| 16 | John Olson | 54 | Head | Manager | Finland |
| 17 | Aline Olson | 52 | Wife | — | Finland |
| 18 | Daniel Olson | 20 | Son | — | Michigan |
| 19 | Alvar Olson | 20 | Son | — | Michigan |
| 20 | Earl Olson | 17 | Son | — | Michigan |
| 21 | David Olson | 17 | Son | — | Michigan |
| 22 | Edwin Harry | 57 | Head | Agriculturist | England |
| 23 | Etta Harry | 58 | Wife | — | Michigan |
| 24 | John Malmstrom | 44 | Head | Salesman | Michigan |
| 25 | Libby Malmstrom | 44 | Wife | — | Michigan |
| 26 | Robert J. Malmstrom | 14 | Son | — | Michigan |
| 27 | Earl H. Malmstrom | 12 | Son | — | Michigan |
| 28 | Oscar M. Fredd | 51 | Head | Proprietor-Service Station | Michigan |
| 29 | Esther Fredd | 49 | Wife | — | Finland |
| 30 | Paul Fredd | 19 | Son | — | Michigan |
| 31 | Marie Fredd | 14 | Daughter | — | Michigan |
| 32 | Elizabeth Zurcher | 69 | Head | — | Michigan |
| 33 | Joseph Zurcher | 46 | Son | Plasterer | Michigan |
| 34 | Agnes Zurcher | 36 | Daughter | — | Michigan |
| 35 | Christine Ruthstrom | 79 | Head | — | Sweden |
| 36 | Elmer Kampschafer | 44 | Head | Longshoreman | Indiana |
| 37 | Berta Kampschafer | 64 | Mother | — | Indiana |
| 38 | Marie Ziebarth | 10 | Lodger | — | Wisconsin |
| 39 | Delbert Kahler | 29 | Head | Laborer | Michigan |
| 40 | Marie Kahler | 26 | Wife | — | Michigan |
Pedigree Summary
Robert + 2 siblings
Gen 1 · 3 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)