RS
Robert Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ottawa-County, Michigan
Our Model Tree links this Robert Sullivan across the 1920, 1930 and 1940 US Censuses in Ottawa-County, Michigan (XGBoost, ~Confirmed), with identified parents Robert & Margaret — first a son (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ottawa-County, Michigan |
| Surname | Sullivan |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Wright |
| 1935 Residence (County) | Ottawa |
| Additional Details | |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Farmer |
| Township / Ward | Wright |
| Est. Birth Year | ~1907 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Margaret Sullivan | Head | — | 60 | ~1880 |
| Robert Sullivan | Son | — | 33 | ~1907 |
| Ward Sullivan | Son | — | 32 | ~1908 |
Census Appearances
1920
Ottawa, Michigan
Son, age 12
Ottawa, Michigan · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Ottawa, Michigan
Son, age 23
Ottawa, Michigan · implied b. ~1907 — 14 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivans |
| Given Name | Robert L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Michigan |
| Occupation | Laborer |
| Industry | General farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Ottawa-County, Michigan
Son, age 33
Ottawa-County, Michigan · implied b. ~1907 — 3 household members
| Surname | Sullivan |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Wright |
| 1935 Residence (County) | Ottawa |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence) and father Henry Tinkler (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Sullivan
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
Henry Tinkler
b. ~1887
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Sullivan
Son · 1940 · age 33 · b. ~1907 · Michigan
★ You are viewing this record
Sibling
Ward Sullivan
Sibling · 1940 · age 32
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 — Ottawa-County, Michigan
Open full size
1940 US Federal Census — Ottawa-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01809-00656)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Woodrow Clum | 21 | son | Assembler | Michigan |
| 42 | Theodore Clum | 18 | son | Polisher | Michigan |
| 43 | June Clum | 16 | daughter | — | Michigan |
| 44 | Mary O'Hearn | 79 | Head | — | Michigan |
| 45 | Lawrence Costello | 33 | Head | Farm Laborer | Missouri |
| 46 | Emma Costello | 21 | wife | — | Michigan |
| 47 | Thelores Costello | 3 | daughter | — | Michigan |
| 48 | Mary Costello | 2 | daughter | — | Michigan |
| 49 | John Gray | 59 | Head | Caretaker | Michigan |
| 50 | Stanley Sherry | 51 | Head | Salesman | Wisconsin |
| 51 | Emilie Sherry | 49 | wife | — | Wisconsin |
| 52 | Fred Franciscus | 55 | Head | Road Construction | Michigan |
| 53 | Elsie Franciscus | 49 | wife | — | Michigan |
| 54 | Albert Franciscus | 15 | son | New Worker | Michigan |
| 55 | William Cutler | 71 | Head | Horse Trainer | Michigan |
| 56 | Sarah Cutler | 60 | wife | — | Michigan |
| 57 | Frank Cox | 58 | Head | Horse Trainer | Michigan |
| 58 | John C. Huizenga | 53 | Head | Pattern Maker | Netherlands |
| 59 | Anna Huizenga | 49 | wife | — | Michigan |
| 60 | Eleanor Huizenga | 20 | daughter | Telephone Operator | Michigan |
| 61 | John Huizenga | 16 | son | Farm Laborer | Michigan |
| 62 | Henry Huizenga | 14 | son | — | Michigan |
| 63 | Alfred Huizenga | 12 | son | — | Michigan |
| 64 | Robert Huizenga | 10 | son | — | Michigan |
| 65 | Frank E. Smith | 52 | Head | Salesman | Wisconsin |
| 66 | Belle W. Smith | 51 | wife | — | Michigan |
| 67 | Timson Luncicum | 46 | hired man | Farm Laborer | Ohio |
| 68 | Earl P. Cole | 26 | Head | Service Repairman | Michigan |
| 69 | Myrtle Cole | 22 | wife | — | Michigan |
| 70 | Francis, Albert | 27 | hired man | Farm Laborer | Michigan |
| 71 | Nichols, Paul | 34 | hired man | Farm Laborer | Michigan |
| 72 | Anna Leland | 79 | Head | — | Michigan |
| 73 | Frances Kelly | 73 | Head | — | Michigan |
| 74 | Mabel Hackett | 53 | Head | Candy Maker | Michigan |
| 75 | Hugh G. Hackett | 19 | son | — | Michigan |
| 76 | Laban J. Kelly | 75 | brother | — | Michigan |
| 77 | Albert Preston | 24 | hired man | Candy Maker | Michigan |
| 78 | Margaret Sullivan | 60 | Head | — | Michigan |
| 79 | Robert Sullivan THIS PERSON | 33 | son | Farmer | Michigan |
| 80 | Ward Sullivan | 32 | son | Press Operator | Michigan |
Pedigree Summary
Robert + 1 sibling
Gen 1 · 4 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)