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John Mcmanus — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Mcmanus across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 7-person household.
Age 23
b. ~1917
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | McManus |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Machine operator |
| Industry | Machine shop |
| Class of Worker | PW |
| Hours Worked | 46 |
| Income (1939) | 1400 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Machine Operator |
| Township / Ward | Boston City |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| John Mcmanus | Son | — | 23 | ~1917 |
| John Mcmanus | Head | — | 60 | ~1880 |
| Robert Mcmanus | Son | — | 21 | ~1919 |
| Margaret Mcmanus | Spouse | — | 53 | ~1887 |
| Mary Mcmanus | Daughter | — | 24 | ~1916 |
| Marguerite Mcmanus | Daughter | — | 18 | ~1922 |
| Isabella Mcmanus | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 13
Suffolk, Massachusetts · implied b. ~1917
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | McManus |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 23
Suffolk-County, Massachusetts · implied b. ~1917 — 7 household members
| Surname | McManus |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Machine operator |
| Industry | Machine shop |
| Class of Worker | PW |
| Hours Worked | 46 |
| Income (1939) | 1400 |
| Highest Grade | No 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 John Mcmanus across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcmanus
Son · 1940 · age 23 · b. ~1917 · Massachusetts
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Sibling
Marguerite Mcmanus
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabella Mcmanus
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mcmanus
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcmanus
Sibling · 1940 · 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
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-t0627-01659-00312)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frances Murray | 19 | daughter | — | Massachusetts |
| 42 | Robert Murray | 17 | son | — | Massachusetts |
| 43 | Geraldine Murray | 15 | daughter | — | Massachusetts |
| 44 | Patrick Murphy | 39 | Head | Laborer | Eire |
| 45 | Anna Murphy | 38 | Wife | — | Eire |
| 46 | John | 13 | son | — | Massachusetts |
| 47 | Mary Corwin | 56 | Head | Plant Helper | Massachusetts |
| 48 | Charlotte Corwin | 34 | Wife | — | Massachusetts |
| 49 | Marsha Corwin | 3 | daughter | — | Massachusetts |
| 50 | Francis Corwin | 1 | son | — | Massachusetts |
| 51 | John Mcmanus | 60 | Head | Plasterer | Eire |
| 52 | Margaret Mcmanus | 53 | Wife | — | Eire |
| 53 | Mary Mcmanus | 24 | daughter | Bakery Worker | Massachusetts |
| 54 | John Mcmanus THIS PERSON | 23 | son | Machine Operator | Massachusetts |
| 55 | Robert Mcmanus | 21 | son | New Worker | Massachusetts |
| 56 | Marguerite Mcmanus | 18 | daughter | — | Massachusetts |
| 57 | Isabella Mcmanus | 12 | daughter | — | Massachusetts |
| 58 | Michael O'Connor | 35 | Head | Laborer | Massachusetts |
| 59 | Margaret O'Connor | 19 | daughter | Ice Cream Packer | Massachusetts |
| 60 | John O'Connor | 17 | son | New Worker | Massachusetts |
| 61 | Helen O'Connor | 15 | daughter | — | Massachusetts |
| 62 | Michael O'Connor | 12 | son | — | Massachusetts |
| 63 | Mary Hudson | 70 | Head | — | Massachusetts |
| 64 | Jeremiah Buckley | 36 | Head | — | Massachusetts |
| 65 | Daniel Sheehan | 47 | Head | — | Massachusetts |
| 66 | Frances Sheehan | 46 | Wife | — | Massachusetts |
| 67 | John Sheehan | 16 | son | — | Massachusetts |
| 68 | John Cannon | 61 | Head | Laborer | Massachusetts |
| 69 | Margaret Cannon | 70 | Sister | — | Eire |
| 70 | John Mcslinchey | 56 | Head | Fireman | Massachusetts |
| 71 | Catherine Mcslinchey | 53 | Wife | — | Massachusetts |
| 72 | Walter Corwin | 48 | Head | Lieutenant | Massachusetts |
| 73 | Mary Corwin | 46 | Wife | — | Massachusetts |
| 74 | Francis Corwin | 23 | son | Sales Service Man | Massachusetts |
| 75 | Joan Corwin | 23 | daughter | Clerical Worker | Massachusetts |
| 76 | Norma Corwin | 21 | daughter | Cigarette Packer | Massachusetts |
| 77 | Walter Corwin | 18 | son | New Worker | Massachusetts |
| 78 | Alice Corwin | 70 | Head | — | Massachusetts |
| 79 | Cornelius O'Brien | 33 | Head | Meat Cutter | Massachusetts |
| 80 | Rita O'Brien | 24 | Wife | — | Maine |
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)