JF
John Flynn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Flynn across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1887), then head of a 7-person household.
Age 53
b. ~1887
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Flynn |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Salesman |
| Industry | Wholesale Dept |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 432 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Salesman |
| Township / Ward | Boston City |
| Est. Birth Year | ~1887 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Flynn | Daughter | — | 15 | ~1925 |
| Mary Flynn | Daughter | — | 5 | ~1935 |
| Helen Flynn | Daughter | — | 11 | ~1929 |
| Julia Flynn | Daughter | — | 10 | ~1930 |
| John Flynn | Head | — | 53 | ~1887 |
| George Flynn | Son | — | 17 | ~1923 |
| Robert Flynn | Son | — | 14 | ~1926 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 32
Suffolk, Massachusetts · implied b. ~1888 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Occupation | Letter carrier |
| Industry | Post office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 42
Suffolk, Massachusetts · implied b. ~1888 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | John Free State |
| Occupation | Mailman |
| Industry | Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Head, age 53
Suffolk-County, Massachusetts · implied b. ~1887 — 7 household members
| Surname | Flynn |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Occupation | Salesman |
| Industry | Wholesale Dept |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 432 |
| Highest Grade | No 8 |
| 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 John Flynn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Flynn (~0.92 confidence) and father John Flynn (~0.92 confidence) and mother Catherine Flynn (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Flynn
b. ~1853
Source father
● Household
· direct · ~0.92
Father
John Flynn
b. ~1856
Source father
● Household
· direct · ~0.92
Mother
Catherine Flynn
b. ~1864
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Flynn
Head · 1940 · age 53 · b. ~1887 · Massachusetts
★ 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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01663-00101)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lena Cullati | 48 | Sister-in-law | Kitchen Worker | Italy |
| 42 | Joseph Gouveia | 65 | Head | Dishwasher | Portugal |
| 43 | Mary Gouveia | 61 | Wife | — | Portugal |
| 44 | Mary Silva | 28 | Daughter | Seamstress | Portugal |
| 45 | Edith Amundia | 17 | Granddaughter | Seamstress | Massachusetts |
| 46 | Henry Lamagne | 38 | Head | Waiter | Massachusetts |
| 47 | Justina Lamagne | 27 | Wife | — | Italy |
| 48 | Henry Lamagne | 3 | Son | — | Massachusetts |
| 49 | Rose Lamagne | 40 | Sister | Inspector | Massachusetts |
| 50 | Anna O'Connell | 29 | Head | — | Massachusetts |
| 51 | John O'Connell | 11 | Son | — | Massachusetts |
| 52 | Alice O'Connell | 10 | Daughter | — | Massachusetts |
| 53 | Harold O'Connell | 9 | Son | — | Massachusetts |
| 54 | Frederick O'Connell | 8 | Son | — | Massachusetts |
| 55 | Patricia O'Connell | 6 | Daughter | — | Massachusetts |
| 56 | William O'Connell | 5 | Son | — | Massachusetts |
| 57 | Andrew Grace | 50 | Head | — | Eire |
| 58 | Mary Grace | 50 | Wife | — | Eire |
| 59 | James H. Campbell | 53 | Lodger | — | England |
| 60 | Cosy Peter | 52 | Head | Stitcher | Albania |
| 61 | Despina Peter | 43 | Wife | — | Albania |
| 62 | Charles Peter | 15 | Son | — | Massachusetts |
| 63 | Violet Peter | 14 | Daughter | — | Massachusetts |
| 64 | James Peter | 4 | Son | — | Massachusetts |
| 65 | Mary Johnson | 52 | Head | — | Eire |
| 66 | Frank Davis | 62 | Lodger | — | Massachusetts |
| 67 | Frank Bannon | 51 | Lodger | — | Eire |
| 68 | William Duffey | 54 | Lodger | Cashier | Pennsylvania |
| 69 | Hollis Sullivan | 65 | Lodger | — | Maine |
| 70 | David Mcdonald | 48 | Lodger | — | Massachusetts |
| 71 | John J. Flynn THIS PERSON | 53 | Head | Salesman | Massachusetts |
| 72 | George Flynn | 17 | Son | Messenger | Massachusetts |
| 73 | Margaret Flynn | 15 | Daughter | — | Massachusetts |
| 74 | Robert Flynn | 14 | Son | — | Massachusetts |
| 75 | Helen Flynn | 11 | Daughter | — | Massachusetts |
| 76 | Julia Flynn | 10 | Daughter | — | Massachusetts |
| 77 | Mary Flynn | 5 | Daughter | — | Massachusetts |
| 78 | Sara C. Ellis | 65 | Head | Housekeeper | Massachusetts |
| 79 | Charles S. Jones | 42 | Head | Taxi Driver | Massachusetts |
| 80 | Elizabeth Jones | 36 | Wife | — | Nova Scotia |
Pedigree Summary
John
Gen 1 · 3 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)