RB
Robert Baldwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Robert Baldwin across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Male
Son
Born: New Hampshire
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Baldwin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | New Worker |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | New Worker |
| Township / Ward | Arlington |
| Est. Birth Year | ~1925 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Jean Baldwin | Daughter | — | 17 | ~1923 |
| George Baldwin | Head | — | 39 | ~1901 |
| Robert Baldwin | Son | — | 15 | ~1925 |
| Richard Baldwin | Son | — | 13 | ~1927 |
| Joan Baldwin | Daughter | — | 4 | ~1936 |
| George Baldwin | Son | — | 12 | ~1928 |
| Lydia Baldwin | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 5
Middlesex, Massachusetts · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Vermont |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Middlesex-County, Massachusetts
Son, age 15
Middlesex-County, Massachusetts · implied b. ~1925 — 7 household members
| Surname | Baldwin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Occupation | New Worker |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 Baldwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Baldwin
Son · 1940 · age 15 · b. ~1925 · Massachusetts
★ You are viewing this record
Sibling
Richard Baldwin
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Baldwin
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Baldwin
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Baldwin
Sibling · 1940 · age 12
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-t0627-01601-00649)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert M. Macdonald | 59 | Head | Milkman | Massachusetts |
| 2 | Florence A. Macdonald | 57 | Wife | — | England |
| 3 | Blanche Hamsworth | 67 | Sister-in-law | Housekeeper | Canada English |
| 4 | John H. Holmes | 48 | Head | Shipper | Massachusetts |
| 5 | Edna M. Holmes | 52 | Wife | — | Massachusetts |
| 6 | Edith Thayer | 65 | Sister-in-law | — | Massachusetts |
| 7 | Charles R. Le Gall | 70 | Head | Auditor | West Indies |
| 8 | Ida I. Le Gall | 78 | Wife | — | Massachusetts |
| 9 | George F. Lang | 36 | Head | Laborer | Massachusetts |
| 10 | Marion Lang | 35 | Wife | — | Massachusetts |
| 11 | Donald Lang | 10 | Son | — | Massachusetts |
| 12 | Carl G. Gustafson | 77 | Head | Tailor | Sweden |
| 13 | Marie Gustafson | 76 | Wife | — | Sweden |
| 14 | Hannah Sponberg | 65 | Sister-in-law | — | Sweden |
| 15 | Mark A. Curtis | 43 | Head | Sc. Books Repair | Maine |
| 16 | Lillian M. Curtis | 43 | Wife | — | Massachusetts |
| 17 | Richard M. Curtis | 13 | Son | — | Massachusetts |
| 18 | Ann E. Curtis | 8 | Daughter | — | Massachusetts |
| 19 | Josephine Nelson | 65 | Head | — | Sweden |
| 20 | B. Elizabeth Nelson | 36 | Daughter | Cashier | Massachusetts |
| 21 | Eunice Nelson | 30 | Daughter | Stenographer | Massachusetts |
| 22 | Albert E. Nelson | 26 | Head | Salesman | Massachusetts |
| 23 | Marjorie Nelson | 26 | Wife | Bookkeeper | Massachusetts |
| 24 | Eleanor Nelson | 5 | Daughter | — | Massachusetts |
| 25 | Thomas Collins | 47 | Head | Manager | Massachusetts |
| 26 | Mary E. Collins | 47 | Wife | — | Massachusetts |
| 27 | Mary Collins | 17 | Daughter | Checker | Massachusetts |
| 28 | Ruth Collins | 15 | Daughter | New Worker | Massachusetts |
| 29 | Paul Collins | 13 | Son | — | Massachusetts |
| 30 | Hugh Mcnamara | 21 | Nephew | Clerk | Massachusetts |
| 31 | Arthur E. Rainville | 35 | Head | Mechanic | New Hampshire |
| 32 | Winnifred Rainville | 33 | Wife | — | New Hampshire |
| 33 | Virginia Rainville | 9 | Daughter | — | Massachusetts |
| 34 | George Baldwin | 39 | Head | Manager | Vermont |
| 35 | Lydia H. Baldwin | 37 | Wife | — | Vermont |
| 36 | Jean Baldwin | 17 | Daughter | Waitress | New Hampshire |
| 37 | Robert Baldwin THIS PERSON | 15 | Son | New Worker | New Hampshire |
| 38 | Richard Baldwin | 13 | Son | — | New Hampshire |
| 39 | George Baldwin | 12 | Son | — | New Hampshire |
| 40 | Joan Baldwin | 4 | Daughter | — | Massachusetts |
Related Census Records
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)