MS
Michael Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bay-County, Michigan
Our Model Tree links this Michael Sullivan across the 1920, 1930 and 1940 US Censuses in Bay-County, Michigan (XGBoost, ~Confirmed), with identified parents Patrick & Amelia — first a head (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bay-County, Michigan |
| Surname | Sullivan |
| Given Name | Michael T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Bay City |
| 1935 Residence (County) | Bay |
| Additional Details | |
| Occupation | Salesman |
| Industry | Retail Hardware |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 982 |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Salesman |
| Township / Ward | Bay City |
| Est. Birth Year | ~1911 |
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 Michael | Age | Birth yr |
|---|---|---|---|---|
| Michael Sullivan | Head | — | 29 | ~1911 |
| Frederick Sullivan | Son | — | 2 | ~1938 |
| Marguerite Sullivan | Spouse | — | 21 | ~1919 |
Census Appearances
1920
Bay, Michigan
Son, age 9
Bay, Michigan · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Michael J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Bay, Michigan
Son, age 18
Bay, Michigan · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Michael F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Bay-County, Michigan
Head, age 29
Bay-County, Michigan · implied b. ~1911 — 3 household members
| Surname | Sullivan |
| Given Name | Michael T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Bay City |
| 1935 Residence (County) | Bay |
| Occupation | Salesman |
| Industry | Retail Hardware |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 982 |
| 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 Michael Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Patrick Sullivan (~0.92 confidence) and mother Amelia Sullivan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Sullivan
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Amelia Sullivan
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Michael Sullivan
Head · 1940 · age 29 · b. ~1911 · 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 — Bay-County, Michigan
Open full size
1940 US Federal Census — Bay-County, Michigan
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01728-00638)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jack E Shearer | 12 | Son | — | Michigan |
| 42 | Michael T Sullivan THIS PERSON | 29 | Head | Salesman | Michigan |
| 43 | Marguerite W Sullivan | 21 | Wife | — | Michigan |
| 44 | Frederick C Sullivan | 2 | Son | — | Michigan |
| 45 | Lewis B Thomas | 42 | Head | Truck Driver | Michigan |
| 46 | Ella M Thomas | 39 | Wife | — | Michigan |
| 47 | Ronald Tazona | 11 | Nephew | — | Michigan |
| 48 | Martha H Lemond | 80 | In Law | — | Michigan |
| 49 | Fred Green | 48 | Head | Electrician | England |
| 50 | Anna Green | 38 | Wife | — | Ohio |
| 51 | Fred Jr Green | 16 | Son | — | Michigan |
| 52 | Patricia A Green | 10 | Daughter | — | Michigan |
| 53 | John S Wazbinski | 30 | Head | Machine Operator | Michigan |
| 54 | Lillian M Wazbinski | 24 | Wife | — | Michigan |
| 55 | Maxine P Wazbinski | 7 | Daughter | — | Michigan |
| 56 | Nancy T Wazbinski | 5 | Daughter | — | Michigan |
| 57 | Margaret Stiles | 57 | Head | — | Canada |
| 58 | Albert H Stiles | 25 | Son | Painter | Canada |
| 59 | Dana W Brown | 68 | Head | — | Wisconsin |
| 60 | Emma E Brown | 64 | Wife | — | Minnesota |
| 61 | Ralph Hoshler | 41 | Head | Machine Operator | Michigan |
| 62 | Alice V Hoshler | 34 | Wife | — | Sweden |
| 63 | Englund John W Hoshler | 9 | Son | — | Michigan |
| 64 | E. R. Harriet Deady | 76 | Head | — | Ohio |
| 65 | Eva M Bartram | 50 | Head | Inspector | Iowa |
| 66 | Gust Spragny | 61 | Head | Carpenter | Germany |
| 67 | Marie D Spragny | 53 | Wife | — | Michigan |
| 68 | Helen G Spragny | 11 | Daughter | — | Michigan |
| 69 | Fred J Dore | 43 | Head | Miner | Michigan |
| 70 | Elsie M Dore | 33 | Wife | — | Michigan |
| 71 | Geraldine M Dore | 11 | Daughter | — | Michigan |
| 72 | Florence M Dore | 9 | Daughter | — | Michigan |
| 73 | Hugh Burns | 73 | Head | — | Michigan |
| 74 | Francis A Burns | 42 | Brother | Tire & Accessories | Michigan |
| 75 | John T Harbourne | 66 | Head | — | Canada |
| 76 | Francis E Harbourne | 62 | Wife | — | Michigan |
| 77 | Sally E Harbourne | 21 | Daughter | Secretary | Michigan |
| 78 | Bayard P Hernden | 30 | Son In Law | Machine Operator | Indiana |
| 79 | Marie F Hernden | 29 | Daughter | — | Michigan |
Pedigree Summary
Michael
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)