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Joseph Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Joseph Brennan across the 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Brennan |
| Given Name | Joseph |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Andover Town |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Andover Town |
| Est. Birth Year | ~1929 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Francis Brennan | Son | — | 9 | ~1931 |
| Theresa Brennan | Daughter | — | 9 | ~1931 |
| Robert Brennan | Son | — | 6 | ~1934 |
| Lawrence Brennan | Head | — | 45 | ~1895 |
| Theresa Brennan | Spouse | — | 42 | ~1898 |
| Joseph Brennan | Son | — | 11 | ~1929 |
| Charles Brennan | Son | — | 10 | ~1930 |
Census Appearances
1930
Essex, Massachusetts
Son, age 1
Essex, Massachusetts · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 11
Essex-County, Massachusetts · implied b. ~1929 — 7 household members
| Surname | Brennan |
| Given Name | Joseph |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Andover Town |
| 1935 Residence (County) | Essex |
| Highest Grade | 5 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 11 · b. ~1929 · Massachusetts
★ You are viewing this record
Sibling
Theresa Brennan
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Brennan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Brennan
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Brennan
Sibling · 1940 · age 9
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01577-00538)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Christina Godin | 21 | daughter | — | Massachusetts |
| 2 | Vivian Godin | 19 | daughter | Ticket Seller | Massachusetts |
| 3 | Mary Godin | 16 | daughter | — | Massachusetts |
| 4 | Andrew J. Badebah | 44 | Head | — | New York |
| 5 | Raphael S. Badebah | 42 | Wife | — | Ireland |
| 6 | Andrew J. Badebah | 14 | son | Laborer | Massachusetts |
| 7 | Joseph Badebah | 8 | son | — | Massachusetts |
| 8 | Francis Badebah | 7 | daughter | — | Massachusetts |
| 9 | Mary E. Madden | 44 | Head | — | Massachusetts |
| 10 | John J. Madden | 40 | brother | Combing | Massachusetts |
| 11 | Sarah A. Madden | 42 | sister | House Maid | Massachusetts |
| 12 | John Lonergan | 28 | Head | Dye House | Massachusetts |
| 13 | Helen Lonergan | 32 | Wife | Winder | Poland |
| 14 | Daniel J. Kane | 34 | Head | Dye House | Massachusetts |
| 15 | Mary A. Kane | 29 | Wife | Chambermaid | Massachusetts |
| 16 | Michael J. Lonergan | 20 | brother | Cook | Massachusetts |
| 17 | Margaret M. Donovan | 55 | Head | Trimmer | Irish Free State |
| 18 | Jeremiah A. Donovan | 51 | brother | Dyer | Irish Free State |
| 19 | Michael J. Donovan | 45 | brother | Bricklayer | Massachusetts |
| 20 | Timothy A. Madden | 46 | Head | Fireman | Massachusetts |
| 21 | Kathryn A. Madden | 35 | Wife | — | Irish Free State |
| 22 | Margaret A. Madden | 6 | daughter | — | Massachusetts |
| 23 | Gertrude M. Madden | 4 | daughter | — | Massachusetts |
| 24 | James B. Craik | 64 | Head | — | New Hampshire |
| 25 | Louise Craik | 59 | Wife | — | Massachusetts |
| 26 | Daniel J. Worcester | 8 | grandson | — | Massachusetts |
| 27 | John L. O'Neil | 29 | Head | Laborer | Massachusetts |
| 28 | Mildred L. O'Neil | 24 | Wife | — | Massachusetts |
| 29 | Patricia O'Neil | 5 | daughter | — | Massachusetts |
| 30 | Rose Mary O'Neil | 1 | daughter | — | Massachusetts |
| 31 | Wilfred A. Parker | 22 | Head | — | Massachusetts |
| 32 | Virginia K. Parker | 21 | Wife | Counterman | New Hampshire |
| 33 | Marjorie A. Parker | 2 | daughter | — | Massachusetts |
| 34 | Lawrence J. Brennan | 45 | Head | Elevator Operator | England |
| 35 | Theresa M. Brennan | 42 | Wife | — | Massachusetts |
| 36 | Joseph Brennan THIS PERSON | 11 | son | — | Massachusetts |
| 37 | Charles Brennan | 10 | son | — | Massachusetts |
| 38 | Francis Brennan | 9 | son | — | Massachusetts |
| 39 | Theresa Brennan | 9 | daughter | — | Massachusetts |
| 40 | Robert Brennan | 6 | son | — | Massachusetts |
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)