RP
Robert Pratt — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Robert Pratt across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Pratt |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Waltham |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | S 6 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Waltham |
| Est. Birth Year | ~1926 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Daniel Pratt | Son | — | 9 | ~1931 |
| Caroline Pratt | Daughter | — | 13 | ~1927 |
| Lawrence Pratt | Son | — | 4 | ~1936 |
| Robert Pratt | Son | — | 14 | ~1926 |
| Mary Pratt | Daughter | — | 11 | ~1929 |
| Frederick Pratt | Head | — | 40 | ~1900 |
| Mary Pratt | Spouse | — | 40 | ~1900 |
| Richard Pratt | Son | — | 6 | ~1934 |
| Barbara Pratt | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 4
Middlesex, Massachusetts · implied b. ~1926 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 14
Middlesex-County, Massachusetts · implied b. ~1926 — 9 household members
| Surname | Pratt |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Waltham |
| 1935 Residence (County) | Middlesex |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | S 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 Robert Pratt across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Pratt
Son · 1940 · age 14 · b. ~1926 · Massachusetts
★ You are viewing this record
Sibling
Richard Pratt
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Caroline Pratt
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Pratt
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Pratt
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Pratt
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara 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-t0627-01619-00187)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert B Culber | 12 | Son | — | Massachusetts |
| 2 | Helen R Culber | 10 | Daughter | — | Massachusetts |
| 3 | Nellie Hart | 72 | Head | — | Massachusetts |
| 4 | Bridget Hart | 70 | Sister | — | Massachusetts |
| 5 | Mary Hart | 68 | Sister | — | Massachusetts |
| 6 | James J Nealey | 69 | Head | — | Eire |
| 7 | Ellen E Nealey | 61 | Wife | — | Eire |
| 8 | Helen Nealey | 29 | Daughter | Salesclerk | Massachusetts |
| 9 | Patrick Burke | 78 | Head | — | Eire |
| 10 | Catherine Burke | 72 | Wife | — | Eire |
| 11 | James Burke | 43 | Son | Houseman | Massachusetts |
| 12 | John Connors | 27 | Boarder | Assembler | Massachusetts |
| 13 | Agnes Bowman | 46 | Head | — | Massachusetts |
| 14 | Thomas F Bowman | 20 | Son | Machinist | Massachusetts |
| 15 | Leonard Bowman | 18 | Son | Forester | Massachusetts |
| 16 | Robert V Bowman | 16 | Son | — | Massachusetts |
| 17 | Marshall J Bowman | 11 | Son | — | Massachusetts |
| 18 | Virginia Marie Bowman | 4 | Daughter | — | Massachusetts |
| 19 | Frederick J Pratt | 40 | Head | Steamfitter | Massachusetts |
| 20 | Mary D Pratt | 40 | Wife | — | Massachusetts |
| 21 | Robert Pratt THIS PERSON | 14 | Son | — | Massachusetts |
| 22 | Caroline Pratt | 13 | Daughter | — | Massachusetts |
| 23 | Mary Pratt | 11 | Daughter | — | Massachusetts |
| 24 | Daniel Pratt | 9 | Son | — | Massachusetts |
| 25 | Barbara Pratt | 8 | Daughter | — | Massachusetts |
| 26 | Richard Pratt | 6 | Son | — | Massachusetts |
| 27 | Lawrence Pratt | 4 | Son | — | Massachusetts |
| 28 | Santo Tumbo | 48 | Head | Laborer | Italy |
| 29 | Anmube Tumbo | 49 | Wife | — | Italy |
| 30 | Rose Tumbo | 23 | Daughter | Machine Operator | Massachusetts |
| 31 | Mary Tumbo | 21 | Daughter | Machine Operator | Massachusetts |
| 32 | Ada Tumbo | 19 | Daughter | Seamstress | Massachusetts |
| 33 | Josephine Tumbo | 15 | Daughter | — | Massachusetts |
| 34 | Alfred J Allen | 59 | Head | — | Massachusetts |
| 35 | Edith J Allen | 42 | Wife | — | Massachusetts |
| 36 | Camille Bourque | 54 | Head | Painter | Massachusetts |
| 37 | Cora Bourque | 41 | Wife | — | Massachusetts |
| 38 | William Bourque | 12 | Son | — | Massachusetts |
| 39 | Robert Bourque | 11 | Son | — | Massachusetts |
| 40 | Arthur Bourque | 8 | Son | — | 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)