JP
John Pratt — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Pratt across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Joseph & John — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Pratt |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | truck driver |
| Industry | Pratt Co. |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 432 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Truck Driver |
| Township / Ward | Arlington |
| Est. Birth Year | ~1918 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Pratt | Daughter | — | 16 | ~1924 |
| E Pratt | Head | — | 54 | ~1886 |
| Marguerite Nicholson | Other | — | 33 | ~1907 |
| John Pratt | Son | — | 22 | ~1918 |
| David Pratt | Son | — | 8 | ~1932 |
| Louise Pratt | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Norfolk, Massachusetts
Son, age 2
Norfolk, Massachusetts · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Norfolk, Massachusetts
Son, age 12
Norfolk, Massachusetts · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 22
Middlesex-County, Massachusetts · implied b. ~1918 — 6 household members
| Surname | Pratt |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Occupation | truck driver |
| Industry | Pratt Co. |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 432 |
| Highest Grade | Hs 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 Pratt across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Pratt (~0.92 confidence) and father John Pratt (~0.92 confidence) and mother Rosamond Pratt (~0.92 confidence) and father E Pratt (~0.92 confidence) and mother Loretta Pratt (~0.92 confidence) and mother Louise Pratt (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Pratt
b. ~1873
Source father
● Household
· direct · ~0.92
Father
John Pratt
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Rosamond Pratt
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
E Pratt
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Loretta Pratt
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Louise Pratt
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Pratt
Son · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
Mary Pratt
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Pratt
Sibling · 1940 · age 8
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-t0627-01601-00746)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gertrude Smith | 62 | Head | Clerk | Massachusetts |
| 2 | Walter S. Keith | 62 | Head | Salesman | Massachusetts |
| 3 | Sarah Keith | 66 | Wife | Housework | Massachusetts |
| 4 | W. S. Mason | 63 | Head | Inspector Of Leather | Canada Eng |
| 5 | E. Louise Mason | 60 | Wife | Housework | Massachusetts |
| 6 | George A. Vogel | 26 | Head | Chauffeur | Massachusetts |
| 7 | Betty Vogel | 22 | Wife | Stenographer | Massachusetts |
| 8 | Emily B. Lewis | 70 | Head | Housework | Massachusetts |
| 9 | Eliz. Wallace | 62 | Head | Housework | North of Ireland |
| 10 | Ruth Wallace | 26 | Daughter | Teacher | Massachusetts |
| 11 | Sarah J. Bullock | 67 | Head | Teacher | Providence R. I. |
| 12 | Anabel S. Childs | 63 | Head | Housework | Massachusetts |
| 13 | Constance Childs | 33 | Daughter | Secretary | Massachusetts |
| 14 | Arthur Slocomb | 39 | Head | Roofing Family | Oakland, Calif. |
| 15 | Arena Slocomb | 33 | Wife | Housework | Johnston City, Ill. |
| 16 | Arnold Taylor | 14 | Son | — | Buckhurst, Ill. |
| 17 | Robert S. Byfield | 35 | Head | Lawyer | Massachusetts |
| 18 | Velma Byfield | 34 | Wife | Housework | Adams, Nebr. |
| 19 | Mary T. Keefe | 68 | Head | Housework | Massachusetts |
| 20 | Mollie Steves | 43 | Head | Secretary | Massachusetts |
| 21 | Rose Traverse | 35 | Head | Hostess | Massachusetts |
| 22 | Marjorie Traverse | 19 | Daughter | Filing Clerk | Massachusetts |
| 23 | Everett H. Mains | 32 | Head | Supervisor | Maine |
| 24 | Edna Mains | 31 | Wife | Secretary | Massachusetts |
| 25 | Edward Wallace | 42 | Head | Lawyer | Massachusetts |
| 26 | Edna Wallace | 31 | Wife | Housework | Massachusetts |
| 27 | Francis Murphy | 55 | Head | Housework | Scotland |
| 28 | Alexander Murphy | 24 | Son | Teller | Massachusetts |
| 29 | Walter Murphy | 18 | Son | — | Canada Eng |
| 30 | E. Zehish Pratt | 54 | Head | Medical Doctor | Massachusetts |
| 31 | Louise Pratt | 44 | Wife | Housework | Massachusetts |
| 32 | John Pratt THIS PERSON | 22 | Son | Truck Driver | Massachusetts |
| 33 | Mary P. Pratt | 16 | Daughter | — | Massachusetts |
| 34 | David Pratt | 8 | Son | — | Massachusetts |
| 35 | Marguerite Nicholson | 33 | Maid | Domestic | Canada Eng |
| 36 | M. J. Donovan | 63 | Head | Attorney | Massachusetts |
| 37 | Helen G. Donovan | 61 | Wife | Housework | Massachusetts |
| 38 | Hazel Donovan | 42 | Daughter | Stenographer | Massachusetts |
| 39 | Lois B. Donovan | 40 | Daughter | Secretary | Massachusetts |
| 40 | Howard L. Donovan | 35 | Son | Collector | Massachusetts |
Pedigree Summary
John + 2 siblings
Gen 1 · 6 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)