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Joseph Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Summit-County, Ohio
Our Model Tree links this Joseph Brennan across the 1930 and 1940 US Censuses in Summit-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Summit-County, Ohio |
| Surname | Brennan |
| Given Name | Joseph D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Akron |
| 1935 Residence (County) | Summit |
| Additional Details | |
| Highest Grade | H 3 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Akron |
| Est. Birth Year | ~1923 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Joseph Brennan | Son | — | 17 | ~1923 |
| Thomas Brennan | Son | — | 12 | ~1928 |
| Beatrice Brennan | Daughter | — | 19 | ~1921 |
| Daniel Brennan | Son | — | 15 | ~1925 |
| David Brennan | Son | — | 8 | ~1932 |
| John Brennan | Son | — | 11 | ~1929 |
| Josephine Brennan | Spouse | — | 43 | ~1897 |
| Dr Brennan | Head | — | 53 | ~1887 |
Census Appearances
1930
Summit, Ohio
Son, age 7
Summit, Ohio · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Joseph D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Summit-County, Ohio
Son, age 17
Summit-County, Ohio · implied b. ~1923 — 8 household members
| Surname | Brennan |
| Given Name | Joseph D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Akron |
| 1935 Residence (County) | Summit |
| Highest Grade | H 3 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Joseph Brennan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Brennan
Son · 1940 · age 17 · b. ~1923 · Ohio
★ You are viewing this record
Sibling
Daniel Brennan
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Brennan
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Brennan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beatrice Brennan
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Brennan
Sibling · 1940 · age 12
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 — Summit-County, Ohio
Open full size
1940 US Federal Census — Summit-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03180-00223)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Paul S Miller | 29 | Son | Manager | Pennsylvania |
| 2 | Marguerite Miller | 25 | Daughter | Asst Manager | Pennsylvania |
| 3 | Clyde Miller | 20 | Son | Student | Pennsylvania |
| 4 | Carl A Merkle | 43 | Head | Dealer | Ohio |
| 5 | Florence K Merkle | 43 | Wife | — | Illinois |
| 6 | Marilyn Merkle | 17 | Daughter | — | Ohio |
| 7 | David A Sullivan | 36 | Head | Proprietor | Poland |
| 8 | Christina Sullivan | 34 | Wife | — | Scotland |
| 9 | Adeline Sullivan | 14 | Daughter | — | Michigan |
| 10 | Gwendolyn S Sullivan | 10 | Daughter | — | Michigan |
| 11 | Wilma J Sullivan | 4 | Daughter | — | Ohio |
| 12 | Geraldine L Dutcher | 21 | Servant | Housekeeper | Arkansas |
| 13 | Raymond Kennedy | 54 | Head | Manager | Indiana |
| 14 | Pearl B Kennedy | 48 | Wife | — | Indiana |
| 15 | Mary B Kennedy | 23 | Daughter | — | Indiana |
| 16 | Mrs Elizabeth Rowley | 57 | Head | — | Ohio |
| 17 | Jane Miller | 62 | Servant | Housekeeper | Loraine |
| 18 | Isador H Birnbaum | 58 | Head | Supervisor | New York |
| 19 | Madge A Birnbaum | 53 | Wife | — | Connecticut |
| 20 | Dr Daniel C Brennan | 53 | Head | Physician | Massachusetts |
| 21 | Josephine L Brennan | 43 | Wife | — | Ohio |
| 22 | Beatrice A Brennan | 19 | Daughter | — | Ohio |
| 23 | Joseph D Brennan THIS PERSON | 17 | Son | — | Ohio |
| 24 | Daniel C Brennan | 15 | Son | — | Ohio |
| 25 | Thomas L Brennan | 12 | Son | — | Ohio |
| 26 | John Wm Brennan | 11 | Son | — | Ohio |
| 27 | David L Brennan | 8 | Son | — | Ohio |
| 28 | Reinhart F Krahl | 67 | Head | Pressman | Germany |
| 29 | Amelia C Krahl | 66 | Wife | — | Ohio |
| 30 | Alma P Krahl | 35 | Daughter | — | Ohio |
| 31 | Harold L Krahl | 24 | Son | Bookkeeper | Ohio |
| 32 | Dorothy L Krahl | 21 | Daughter-in-law | Bookkeeper | Ohio |
| 33 | Paul E Krahl | 15 | Grandchild | — | Ohio |
| 34 | Edward J Smail | 51 | Head | Salesman | Pennsylvania |
| 35 | Helen M Smail | 59 | Wife | — | Pennsylvania |
| 36 | Myrtle Strehlow | 26 | Servant | Housekeeper | S Dakota |
| 37 | Kathryn M Watkins | 52 | Head | — | Ohio |
| 38 | Robert L Watkins | 26 | Son | Salesman | Ohio |
| 39 | Mary Dangel | 62 | Head | — | Germany |
| 40 | Mary Jane Dangel | 16 | Grandchild | — | Ohio |
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)