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John Guthrie — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Guthrie across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Guthrie |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Somerville |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | City Of Somerville |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Thomas Guthrie | Son | — | 9 | ~1931 |
| Francis Guthrie | Son | — | 6 | ~1934 |
| John Guthrie | Son | — | 11 | ~1929 |
| Marie Guthrie | Spouse | — | 39 | ~1901 |
| Nathan Guthrie | Head | — | 37 | ~1903 |
| Edward Guthrie | Son | — | 2 | ~1938 |
| Maureen Guthrie | Daughter | — | ~1940 | |
| Robert Guthrie | Son | — | 4 | ~1936 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Guthrie |
| Given Name | John S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 11
Middlesex-County, Massachusetts · implied b. ~1929 — 8 household members
| Surname | Guthrie |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Somerville |
| 1935 Residence (County) | Middlesex |
| Highest Grade | 6 |
| 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 Guthrie across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Guthrie
Son · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Maureen Guthrie
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Guthrie
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Guthrie
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Guthrie
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Guthrie
Sibling · 1940 · age 6
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01702-00753)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elisabetta Miele | 39 | Wife | — | Italy |
| 42 | Mary Miele | 16 | Daughter | — | Massachusetts |
| 43 | Ruth Miele | 13 | Daughter | — | Massachusetts |
| 44 | Vincent Miele | 8 | Son | — | Massachusetts |
| 45 | Rosamond Miele | 2 | Daughter | — | Massachusetts |
| 46 | Gaetano Tadii | 51 | Head | Laborer | Italy |
| 47 | Ida Tadii | 50 | Wife | — | Italy |
| 48 | Lena Tadii | 22 | Daughter | Stitcher | Massachusetts |
| 49 | Ada Tadii | 20 | Daughter | Secretary | Massachusetts |
| 50 | Edna Tadii | 19 | Daughter | New Worker | Massachusetts |
| 51 | Louis Tadii | 17 | Son | — | Massachusetts |
| 52 | John J. Mahony | 47 | Head | Truck Operator | Massachusetts |
| 53 | Mary G. Mahony | 34 | Sister | Teacher | Massachusetts |
| 54 | Patrick Roche | 60 | Lodger | — | Eire |
| 55 | William Lundergan | 27 | Head | Laborer | Massachusetts |
| 56 | Elizabeth Lundergan | 33 | Wife | — | Massachusetts |
| 57 | Elizabeth Lundergan | 4 | Daughter | — | Massachusetts |
| 58 | Nathan Guthrie | 37 | Head | Chipper | Ireland |
| 59 | Marie Guthrie | 39 | Wife | — | Ireland |
| 60 | John Guthrie THIS PERSON | 11 | Son | — | Massachusetts |
| 61 | Thomas Guthrie | 9 | Son | — | Massachusetts |
| 62 | Francis Guthrie | 6 | Son | — | Massachusetts |
| 63 | Robert Guthrie | 4 | Son | — | Massachusetts |
| 64 | Edward Guthrie | 2 | Son | — | Massachusetts |
| 65 | Maureen Guthrie | 0 | Daughter | — | Massachusetts |
| 66 | Patrick Lafferty | 47 | Head | Pipe Layer | Ireland |
| 67 | Julia Lafferty | 47 | Wife | — | Ireland |
| 68 | Anne Lafferty | 21 | Daughter | Electrical Assembler | Massachusetts |
| 69 | Catherine Lafferty | 18 | Daughter | — | Massachusetts |
| 70 | Edward Lafferty | 17 | Son | — | Massachusetts |
| 71 | William Lafferty | 13 | Son | — | Massachusetts |
| 72 | Mary Lafferty | 11 | Daughter | — | Massachusetts |
| 73 | John O'Connell | 35 | Head | Chauffeur | Massachusetts |
| 74 | Rose O'Connell | 34 | Wife | — | Massachusetts |
| 75 | John O'Connell | 11 | Son | — | Massachusetts |
| 76 | Joseph O'Connell | 9 | Son | — | Massachusetts |
| 77 | Thomas O'Connell | 6 | Son | — | Massachusetts |
| 78 | Rose Chiesa | 56 | Head | Hand Sewer | Argentina |
| 79 | Andrew Chiesa | 35 | Son | Shipping Clerk | Massachusetts |
| 80 | Theresa Chiesa | 32 | Daughter | Machine Operator | 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)