JF
Joseph Flynn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Joseph Flynn across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Flynn |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| Est. Birth Year | ~1930 |
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 |
|---|---|---|---|---|
| Mary Flynn | Daughter | — | 18 | ~1922 |
| Joseph Flynn | Son | — | 10 | ~1930 |
| Alice Flynn | Daughter | — | 7 | ~1933 |
| John Flynn | Son | — | 28 | ~1912 |
| Thomas Flynn | Son | — | 19 | ~1921 |
| John Flynn | Head | — | 48 | ~1892 |
| Catherine Flynn | Daughter | — | 4 | ~1936 |
| Helen Flynn | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age
Suffolk, Massachusetts · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 10
Suffolk-County, Massachusetts · implied b. ~1930 — 8 household members
| Surname | Flynn |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | 4 |
| 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 Flynn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Flynn
Son · 1940 · age 10 · b. ~1930 · Massachusetts
★ You are viewing this record
Sibling
Alice Flynn
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Flynn
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Flynn
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Flynn
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Flynn
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Flynn
Sibling · 1940 · age 4
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01667-00681)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Francis Arnold | 13 | Son | — | Massachusetts |
| 43 | John Flynn | 48 | Head | Shipper | Massachusetts |
| 44 | John Jr. Flynn | 28 | Son | Office Manager | Massachusetts |
| 45 | Thomas Flynn | 19 | Son | — | Massachusetts |
| 46 | Mary Flynn | 18 | Daughter | — | Massachusetts |
| 47 | Helen Flynn | 12 | Daughter | — | Massachusetts |
| 48 | Joseph Flynn THIS PERSON | 10 | Son | — | Massachusetts |
| 49 | Alice Flynn | 7 | Daughter | — | Massachusetts |
| 50 | Catherine Flynn | 4 | Daughter | — | Massachusetts |
| 51 | William J. Haggerty | 65 | Head | — | New York |
| 52 | Catherine Haggerty | 48 | Wife | — | Illinois |
| 53 | Pearl Haggerty | 24 | Daughter | — | Massachusetts |
| 54 | Charles Haggerty | 22 | Son | Maintenance | Massachusetts |
| 55 | Catherine Haggerty | 19 | Daughter | Salesgirl | Massachusetts |
| 56 | John Haggerty | 11 | Son | — | Massachusetts |
| 57 | Joseph Haggerty | 9 | Son | — | Massachusetts |
| 58 | James Haggerty | 5 | Son | — | Massachusetts |
| 59 | Mary Clarke | 76 | Head | — | Irish Free State |
| 60 | Mary Clarke | 49 | Niece | Salesgirl | Massachusetts |
| 61 | Mary Michalow | 39 | Head | Laborer | Massachusetts |
| 62 | Virginia Crouch | 19 | Step Daughter | Machine Operator | Massachusetts |
| 63 | Hilda Bridges | 45 | Head | — | Canada-English |
| 64 | Lorraine Bridges | 14 | Daughter | — | Massachusetts |
| 65 | Robert Bridges | 12 | Son | — | Massachusetts |
| 66 | Hilda Bridges | 11 | Daughter | — | Massachusetts |
| 67 | Francis Bridges | 9 | Son | — | Massachusetts |
| 68 | Norma Bridges | 8 | Daughter | — | Massachusetts |
| 69 | Orrin Groves | 36 | Head | Machinist | Maine |
| 70 | Mary Groves | 38 | Wife | — | Massachusetts |
| 71 | Norma Groves | 11 | Daughter | — | Massachusetts |
| 72 | Orrin Jr. Groves | 10 | Son | — | Massachusetts |
| 73 | Robert Groves | 9 | Son | — | Massachusetts |
| 74 | Russell Groves | 7 | Son | — | Massachusetts |
| 75 | Richard Groves | 3 | Son | — | Massachusetts |
| 76 | Charles Bennett | 24 | Head | Laborer | Massachusetts |
| 77 | Mildred Bennett | 23 | Wife | — | Canada-English |
| 78 | Charles Jr. Bennett | 6 | Son | — | Massachusetts |
| 79 | Malcolm Bennett | 5 | Son | — | Massachusetts |
| 80 | Eileen Bennett | 3 | Daughter | — | Massachusetts |
Related Census Records
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)