WB
William Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sanilac-County, Michigan
Our Model Tree links this William Brennan across the 1930 and 1940 US Censuses in Sanilac-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1894), then head of a 9-person household.
Age 46
b. ~1894
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sanilac-County, Michigan |
| Surname | Brennan |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Buel twp |
| 1935 Residence (County) | Sanilac |
| Additional Details | |
| Occupation | farmer |
| Industry | farming |
| Class of Worker | Oa |
| Hours Worked | 45 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Farmer |
| Township / Ward | Buel Twp |
| Est. Birth Year | ~1894 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| John Brennan | Son | — | 10 | ~1930 |
| Leo Brennan | Son | — | 15 | ~1925 |
| Raymond Brennan | Son | — | 16 | ~1924 |
| Stanley Brennan | Son | — | 5 | ~1935 |
| La Brennan | Daughter | — | 1 | ~1939 |
| William Brennan | Head | — | 46 | ~1894 |
| Tom Brennan | Son | — | 13 | ~1927 |
| Grace Brennan | Spouse | — | 37 | ~1903 |
| Martha Brennan | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Sanilac, Michigan
Head, age 34
Sanilac, Michigan · implied b. ~1896 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennen |
| Given Name | Will J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 18 |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Michigan |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Sanilac-County, Michigan
Head, age 46
Sanilac-County, Michigan · implied b. ~1894 — 9 household members
| Surname | Brennan |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Buel twp |
| 1935 Residence (County) | Sanilac |
| Occupation | farmer |
| Industry | farming |
| Class of Worker | Oa |
| Hours Worked | 45 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same House |
| 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 William Brennan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Brennan
Head · 1940 · age 46 · b. ~1894 · 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 — Sanilac-County, Michigan
Open full size
1940 US Federal Census — Sanilac-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01818-00124)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Alonzo | 35 | Head | Farmer | Michigan |
| 2 | Agnes Alonzo | 36 | wife | — | Michigan |
| 3 | Bertha Alonzo | 7 | daughter | — | Michigan |
| 4 | Donald Alonzo | 4 | son | — | Michigan |
| 5 | Betty Alonzo | 3 | daughter | — | Michigan |
| 6 | George Herrell | 17 | hired hand | Laborer | Canada French |
| 7 | Jarrett Levitt | 56 | Head | Farmer | Michigan |
| 8 | Lynn Levitt | 23 | son | Farmer | Michigan |
| 9 | Ida Tryers | 54 | servant | Housekeeper | Michigan |
| 10 | Sara Tryers | 15 | daughter | Housekeeper | Detroit |
| 11 | Harold Levitt | 45 | Head | Farmer | Michigan |
| 12 | Martha Levitt | 68 | mother | — | Michigan |
| 13 | Henry Staudaker | 54 | Head | Farmer | Michigan |
| 14 | Laura Staudaker | 47 | wife | — | Michigan |
| 15 | Lewis Staudaker | 15 | son | Laborer | Michigan |
| 16 | Dale Staudaker | 7 | son | — | Michigan |
| 17 | Arthur Miller | 47 | Head | Farmer | Michigan |
| 18 | Margaret Miller | 50 | wife | — | Michigan |
| 19 | Reid Miller | 20 | son | Laborer | Michigan |
| 20 | Raymond Miller | 17 | son | Laborer | Michigan |
| 21 | Eileen Miller | 13 | daughter | — | Michigan |
| 22 | Henry Miller | 46 | brother | Laborer | Michigan |
| 23 | Norman Miller | 44 | Head | Farmer | Michigan |
| 24 | Goldie A. Miller | 36 | wife | — | Michigan |
| 25 | Eugene Miller | 17 | son | Laborer | Michigan |
| 26 | Donna Miller | 12 | daughter | — | Michigan |
| 27 | William Brennan THIS PERSON | 46 | Head | Farmer | Michigan |
| 28 | Grace Brennan | 37 | wife | — | Michigan |
| 29 | Raymond Brennan | 16 | son | Farmer | Michigan |
| 30 | Leo Brennan | 15 | son | — | Michigan |
| 31 | Tom Brennan | 13 | son | — | Michigan |
| 32 | John Brennan | 10 | son | — | Michigan |
| 33 | Martha Brennan | 7 | daughter | — | Michigan |
| 34 | Stanley Brennan | 5 | son | — | Michigan |
| 35 | La Mar Brennan | 1 | daughter | — | Michigan |
| 36 | Robert Purvis | 47 | Head | Farmer | Michigan |
| 37 | Ruby Purvis | 26 | wife | — | Michigan |
| 38 | Alice Purvis | 6 | daughter | — | Michigan |
| 39 | Ira Purvis | 4 | daughter | — | Michigan |
| 40 | Robert Purvis | 1 | son | — | Michigan |
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)