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John Mann — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Mann across the 1930 and 1940 US Censuses in Suffolk-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 | Suffolk-County, Massachusetts |
| Surname | MANN |
| Given Name | JOHN |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | MASSACHUSETTS |
| 1935 Residence (City) | BOSTON CITY |
| 1935 Residence (County) | SUFFOLK |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| 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 John | Age | Birth yr |
|---|---|---|---|---|
| Marolyn Mann | Daughter | — | 13 | ~1927 |
| John Mann | Son | — | 11 | ~1929 |
| Russell Mann | Head | — | 38 | ~1902 |
| Ella Mann | Spouse | — | 37 | ~1903 |
| Russell Mann | Son | — | 15 | ~1925 |
| Paul Mann | Son | — | 17 | ~1923 |
| June Mann | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 1
Suffolk, Massachusetts · implied b. ~1929 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mann |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| 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 11
Suffolk-County, Massachusetts · implied b. ~1929 — 7 household members
| Surname | MANN |
| Given Name | JOHN |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | MASSACHUSETTS |
| 1935 Residence (City) | BOSTON CITY |
| 1935 Residence (County) | SUFFOLK |
| Highest Grade | 5 |
| 1935 Residence | Same House |
| 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 Mann across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mann
Son · 1940 · age 11 · b. ~1929 · Massachusetts
★ You are viewing this record
Sibling
June Mann
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mann
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marolyn Mann
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Russell Mann
Sibling · 1940 · age 15
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
40 people indexed on this census page (nara:1940:m-t0627-01682-00281)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Bradbury | 47 | HEAD | Motorman | ENGLISH CANADA |
| 2 | Mary Bradbury | 48 | WIFE | — | ENGLISH CANADA |
| 3 | Rowen Bradbury | 25 | SON | — | MASSACHUSETTS |
| 4 | Robert Bradbury | 20 | SON | Plate Maker Assistant | MASSACHUSETTS |
| 5 | Mary Bradbury | 14 | DAUGHTER | — | MASSACHUSETTS |
| 6 | Jane Bradbury | 76 | MOTHER | — | ENGLISH CANADA |
| 7 | Mary Noonan | 77 | HEAD | — | IRISH FREE STATE |
| 8 | Joseph Noonan | 41 | SON | Motorman | MASSACHUSETTS |
| 9 | Walter Hooper | 51 | HEAD | Maintenance | TENNESSEE |
| 10 | Marie Hooper | 50 | WIFE | — | IRISH FREE STATE |
| 11 | Phillip Dawdenne|Dawdeine | 38 | HEAD | Driver | MASSACHUSETTS |
| 12 | Bertha Dawdenne|Dawdeine | 30 | WIFE | — | MASSACHUSETTS |
| 13 | Doris Dawdenne|Dawdeine | 11 | DAUGHTER | — | MASSACHUSETTS |
| 14 | Alda Dawdenne|Dawdeine | 9 | DAUGHTER | — | MASSACHUSETTS |
| 15 | Diana Dawdenne|Dawdeine | 7 | DAUGHTER | — | MASSACHUSETTS |
| 16 | Jean Dawdenne|Dawdeine | 5 | DAUGHTER | — | MASSACHUSETTS |
| 17 | Clinton Porter | 31 | HEAD | Electrician | MASSACHUSETTS |
| 18 | Rolanda Porter | 22 | WIFE | — | MASSACHUSETTS |
| 19 | Patricia Porter | 2 | DAUGHTER | — | MASSACHUSETTS |
| 20 | Carl Grundsturm | 25 | HEAD | Mechanic | MASSACHUSETTS |
| 21 | Margaret Grundsturm | 24 | WIFE | — | MASSACHUSETTS |
| 22 | Daniel Grundsturm | 2 | SON | — | MASSACHUSETTS |
| 23 | Edgar Dame | 27 | HEAD | Coffee Blender | MASSACHUSETTS |
| 24 | Dorothy Dame | 23 | WIFE | — | MASSACHUSETTS |
| 25 | Dorothy Dame | 7 | DAUGHTER | — | MASSACHUSETTS |
| 26 | Joan Dame | 3 | DAUGHTER | — | MASSACHUSETTS |
| 27 | Richard Howland | 19 | LODGER | — | MASSACHUSETTS |
| 28 | William Davis | 56 | HEAD | Laborer | MASSACHUSETTS |
| 29 | Marion Davis | 37 | WIFE | — | MASSACHUSETTS |
| 30 | Alice Davis | 16 | DAUGHTER | — | MASSACHUSETTS |
| 31 | Walter Jones | 61 | HEAD | — | MAINE |
| 32 | Nettie Jones | 61 | WIFE | — | MAINE |
| 33 | Myron Williams | 38 | LODGER | Mechanic | MAINE |
| 34 | Russell Mann | 38 | HEAD | — | MASSACHUSETTS |
| 35 | Ella Mann | 37 | WIFE | — | MASSACHUSETTS |
| 36 | Paul Mann | 17 | SON | — | MASSACHUSETTS |
| 37 | Russell Mann | 15 | SON | — | MASSACHUSETTS |
| 38 | Marolyn Mann | 13 | DAUGHTER | — | MASSACHUSETTS |
| 39 | John Mann THIS PERSON | 11 | SON | — | MASSACHUSETTS |
| 40 | June Mann | 6 | DAUGHTER | — | 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)