RA
Robert Alexander — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marquette-County, Michigan
Our Model Tree links this Robert Alexander across the 1920, 1930 and 1940 US Censuses in Marquette-County, Michigan (XGBoost, ~Confirmed), with identified parents Edith & Walter — first a head (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marquette-County, Michigan |
| Surname | Alexander |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Marquette |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road Constr |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 226 |
| Highest Grade | No 0 |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Laborer |
| Township / Ward | Marquette |
| Est. Birth Year | ~1909 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Sally Alexander | Daughter | — | 7 | ~1933 |
| Robert Alexander | Head | — | 31 | ~1909 |
| Ronald Alexander | Son | — | 1 | ~1939 |
| Robert Alexander | Son | — | 5 | ~1935 |
| Evelyn Alexander | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Marquette, Michigan
Son, age 11
Marquette, Michigan · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Marquette, Michigan
Son, age 21
Marquette, Michigan · implied b. ~1909 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Laborer |
| Industry | Odd Jobs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Marquette-County, Michigan
Head, age 31
Marquette-County, Michigan · implied b. ~1909 — 5 household members
| Surname | Alexander |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Marquette |
| Occupation | Laborer |
| Industry | Road Constr |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 226 |
| Highest Grade | No 0 |
| 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 Alexander across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Edith Alexander (~0.92 confidence) and father Walter Alexander (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Edith Alexander
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Walter Alexander
b. ~1885
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Alexander
Head · 1940 · age 31 · b. ~1909 · Michigan
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marquette-County, Michigan
Open full size
1940 US Federal Census — Marquette-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01787-00142)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Leona Buschlein | 18 | Daughter | — | Missouri |
| 42 | Marie Brown | 12 | Daughter | — | Michigan |
| 43 | Frank Kivela | 57 | Head | Shoemaker | Finland |
| 44 | Anna Kivela | 50 | Wife | — | Finland |
| 45 | John Kivela | 22 | Son | Apprentice Chemist | Michigan |
| 46 | John Kivela | 46 | Brother | Shoemaker | Finland |
| 47 | Hanna Matt | 51 | Lodger | Laborer | Finland |
| 48 | Matt Koivuniemi | 13 | Lodger | — | Michigan |
| 49 | Robert Alexander THIS PERSON | 31 | Head | Laborer | Michigan |
| 50 | Evelyn Alexander | 26 | Wife | — | Michigan |
| 51 | Sally Alexander | 7 | Daughter | — | Michigan |
| 52 | Robert Alexander | 5 | Son | — | Michigan |
| 53 | Ronald Alexander | 1 | Son | — | Michigan |
| 54 | Waino Jarvis | 48 | Head | Laborer | Michigan |
| 55 | Elsie Jarvis | 40 | Wife | — | Michigan |
| 56 | Elsie Jarvis | 17 | Daughter | Housemaid | Michigan |
| 57 | Saima Jarvis | 14 | Daughter | — | Michigan |
| 58 | Arvo Jarvis | 13 | Son | — | Michigan |
| 59 | Lydia Jarvis | 11 | Daughter | — | Michigan |
| 60 | Helen Jarvis | 8 | Daughter | — | Michigan |
| 61 | Waino Jarvis | 7 | Son | — | Michigan |
| 62 | Viola Jarvis | 5 | Daughter | — | Michigan |
| 63 | Jerry Jarvis | 3 | Son | — | Michigan |
| 64 | David Jarvis | 2 | Son | — | Michigan |
| 65 | Clarence Struthers | 33 | Head | Cab Driver | Michigan |
| 66 | Marie Struthers | 29 | Wife | — | Michigan |
| 67 | Grace Struthers | 2 | Daughter | — | Michigan |
| 68 | Andrew Struthers | 1 | Son | — | Michigan |
| 69 | Frederick Bengry | 43 | Head | Printer | Michigan |
| 70 | Anna Bengry | 38 | Wife | — | Michigan |
| 71 | Carleton Bengry | 16 | Son | — | Michigan |
| 72 | Gerald Bengry | 15 | Son | — | Michigan |
| 73 | Barbara Bengry | 13 | Daughter | — | Michigan |
| 74 | Arlene Bengry | 10 | Daughter | — | Michigan |
| 75 | Chauncey Bengry | 8 | Son | — | Michigan |
| 76 | Duane Bengry | 4 | Son | — | Michigan |
| 77 | Dale Bengry | 2 | Daughter | — | Michigan |
| 78 | Joseph Webb | 36 | Head | Laborer | Michigan |
| 79 | Bernadette Webb | 35 | Wife | — | Michigan |
| 80 | Betty Webb | 17 | Daughter | New Worker | Michigan |
Pedigree Summary
Robert
Gen 1 · 2 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)