JM
James Mann — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this James Mann across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 9-person household.
Age 16
b. ~1914
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Mann |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1914 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Marie Mann | Daughter | — | 14 | ~1916 |
| Alice Mann | Daughter | — | 22 | ~1908 |
| Anna Mann | Daughter | — | 20 | ~1910 |
| James Mann | Son | — | 16 | ~1914 |
| Francis Mann | Son | — | 24 | ~1906 |
| Thomas Mann | Head | — | 53 | ~1877 |
| Frederick Mann | Daughter | — | 18 | ~1912 |
| Agnes Mann | Other | — | 50 | ~1880 |
| Joseph Mann | Son | — | 12 | ~1918 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 16
Middlesex, Massachusetts · implied b. ~1914 — 9 household members
| Surname | Mann |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 27
Middlesex-County, Massachusetts · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Moen |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | E. Lexington |
| 1935 Residence (County) | Middlesex |
| Occupation | Agent |
| Industry | Life Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1832 |
| Highest Grade | C-3 |
| 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 James Mann across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mann
Son · 1930 · age 16 · b. ~1914 · Massachusetts
★ You are viewing this record
Sibling
Frederick Mann
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Mann
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Mann
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mann
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Mann
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mann
Sibling · 1930 · age 24
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
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel921:0174)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Norman Cronin | 7 | son | — | Massachusetts |
| 2 | Joseph E Rogers | 59 | Head | None | Massachusetts |
| 3 | Anna Rogers | 57 | Wife-H | Inspector | Massachusetts |
| 4 | Joseph Rogers | 15 | son | None | Massachusetts |
| 5 | William Rogers | 10 | son | None | Massachusetts |
| 6 | Anna Rogers | 5 | daughter | None | Massachusetts |
| 7 | Eileen Rogers | 1 | daughter | None | Massachusetts |
| 8 | Daniel J Callahan | 43 | Head | Fireman | Massachusetts |
| 9 | Elizabeth Callahan | 42 | Wife-H | Stenographer | Massachusetts |
| 10 | Elizabeth Callahan | 14 | daughter | None | Massachusetts |
| 11 | Margaret Callahan | 7 | daughter | None | Massachusetts |
| 12 | Rita Callahan | 4 | daughter | None | Massachusetts |
| 13 | Dorothy Callahan | 3 | daughter | None | Massachusetts |
| 14 | Thomas Mann | 53 | Head | Laborer | Massachusetts |
| 15 | Agnes Mann | 50 | Wife-H | None | Massachusetts |
| 16 | Francis Mann | 24 | son | Cashier | Massachusetts |
| 17 | Alice Mann | 22 | daughter | Operator | Massachusetts |
| 18 | Anna Mann | 20 | daughter | None | Massachusetts |
| 19 | Frederick Mann | 18 | daughter | None | Massachusetts |
| 20 | James Mann THIS PERSON | 16 | son | None | Massachusetts |
| 21 | Marie Mann | 14 | daughter | None | Massachusetts |
| 22 | Joseph Mann | 12 | son | None | Massachusetts |
| 23 | Henry J Manley | 57 | Head | Weaver | Vermont |
| 24 | Agnes Manley | 53 | Wife-H | None | Canada |
| 25 | Priscilla Manley | 31 | daughter | Stitcher | Massachusetts |
| 26 | Viola Manley | 23 | daughter | Stitcher | Massachusetts |
| 27 | Irene Manley | 17 | daughter | None | Massachusetts |
| 28 | Robert F Manley | 24 | son | Fixer | Massachusetts |
| 29 | Theresa Manley | 23 | daughter-in-law | None | Massachusetts |
| 30 | Ronald R Manley | 0 | grandson | None | Massachusetts |
| 31 | Edward G Angus | 26 | Head | Electrician | Scotland |
| 32 | Jessie H Angus | 22 | Wife-H | None | Scotland |
| 33 | Margaret Angus | 0 | daughter | None | Massachusetts |
| 34 | Geraldine Angus | 18 | sister | None | Scotland |
| 35 | Doris Angus | 15 | sister | None | Scotland |
| 36 | Rosaline Angus | 12 | sister | None | Massachusetts |
| 37 | Mary Sheridan | 68 | mother | None | Irish Free State |
| 38 | Patrick J Gallagher | 60 | Head | Steamfitter | Massachusetts |
| 39 | Joseph Gallagher | 18 | son | None | Massachusetts |
| 40 | Thomas Gallagher | 24 | son | Usher | Massachusetts |
| 41 | Frederick Gallagher | 22 | son | Meter Man | Massachusetts |
| 42 | Mary Gallagher | 19 | daughter | Clerk | Massachusetts |
| 43 | Catherine Gallagher | 16 | daughter | Clerk | Massachusetts |
| 44 | Martin Turnberry | 46 | Head | None | Massachusetts |
| 45 | Ida Turnberry | 45 | Wife-H | Mechanic | Massachusetts |
| 46 | James J Sullivan | 52 | Head | None | Massachusetts |
| 47 | Annie Sullivan | 47 | Wife-H | Police Man | Massachusetts |
| 48 | Raymond Sullivan | 21 | son | None | Massachusetts |
| 49 | Marion Sullivan | 15 | daughter | Teacher | Massachusetts |
| 50 | Frederick Sullivan | 13 | son | None | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)